The best pliers. Is there a difference between pliers and pliers? Dielectric pliers, combined and universal
Surprisingly, but true: every repairman will argue that pliers are not a tool for professionals. However, when asked if he uses them, he will answer: "Of course."
There was an opinion that a professional tool should perform a single operation (that is, you need to use wire cutters for biting, and pliers for gripping), but this does not seem to apply to pliers: there are more than enough pro models. So we decided to figure out what's what.
FUNCTIONALITY
Pliers as a special case of a pliers tool - a product that combines the functions of two separate devices: pliers and wire cutters. Such versatility is convenient for frequent small work. However, this comes at the cost of some restrictions. If wire cutters are a tool, relatively speaking, consumable (blunted - acquired new ones), then pliers, by household standards, are almost eternal. Therefore, the biting function of pliers is most often used only for cutting wires. Otherwise, after contact with hard materials- the cutting parts grind off, and the tool will turn into pliers.
STEEL
The steel from which the pliers are made determines their working qualities to the greatest extent. Here, manufacturers not only maintain the strictest composition of the material, but also use many special processing technologies to give the elements the desired hardness. For example, the age of a hinge mechanism will be maximum only when the hardness of the axial and external parts is the same.
Sponges and cutting edges of expensive models, in addition to ordinary temperature treatments, are often also hardened by high frequency currents.
COATING
The next step is to apply an anti-corrosion compound to the tool so that after the first rain the pliers do not have to be changed. The simplest defense- bluing (synonyms - oxidation or blackening) of steel - consists in the fact that the part is placed in a jet of hot steam containing oils. After that, it is sometimes covered with a special varnish.
Oxidation slows down oxidation processes, but is not a good protection when wet frequently. Therefore, black (blued) pliers are designed for work in workshops. To "survive" in the open, they need more serious protection, such as chrome plating (or coating parts with chromium-containing compounds). Such products are distinguished by a steel sheen. To give chrome-plated pliers a more attractive look, their sponges are sometimes polished, then the surface acquires a characteristic sheen.
Rarely, but there is a zinc coating. It is in no way inferior to "chromium", and it tolerates shock even better (zinc is softer than chromium). However, in terms of presentability, such samples are clearly inferior to chrome ones.
HANDLES
Now you need to ensure comfortable contact of the pliers with the palm. To do this, the handles are "dressed" in plastic. Offhand, all handles can be divided into single-component, ergonomic (with rubber inserts) and electrically insulating. In the latter, the material, as a rule, is more rigid, but it isolates from voltages up to 1000 volts. Rubber inserts of ergonomic handles make them more comfortable, but at the same time increase sensitivity to chemicals (rubber is a "delicate matter"). If issues of chemical resistance of handles are paramount, a one-component option is more appropriate. And especially for "chemists" many manufacturers produce models without handles at all.
An important point is the reliability of fastening plastic lining. It is impossible to work with a sample whose handles turn or slide off the rod. The easiest way is to put them on glue, but it can dry out or "melt" when in contact with the solvent. This method is supplemented by thermal shrinkage of plastic (in other words, it is put on hot rods). Well, and very rarely the handles are strengthened with special pins.
GENERAL
A notch is applied to the sponges of the pliers. How well the tool will hold the part depends on its size and shape. The notch is sometimes found on the other side of the axis (closer to the handles), this allows you to choose the grip option. In the form of sponges, pliers repeat the thumb and forefinger of the hand, brought together. The geometry of these tools practically does not vary from model to model, only the dimensions change. The total length of the sample indicates the "power" qualities of the tool. All other distances (from the jaws to the axis, the length of the notch on the jaws, the length of the cutting elements, etc.) differ slightly from brand to brand.
A special point is the sharpening of cutting edges. Using various know-how, firms try to give these elements certain qualities: they are hardened in a special way, sharpened at certain angles, etc.
The quality of the final product can be judged by how it is assembled. Ideally, there should be no backlash in the axis, and the handles should be smoothly and effortlessly bred (then the pliers can be operated with one hand). In the compressed position, a small (no more than tenths of a millimeter) gap between the jaws is allowed.
A little trick: to appreciate the "unfamiliar" pliers, look in front of the closed lips. If you see two regular rectangles of the same shape, it is likely that you have a high quality sample. The fact is that in production this nuance is not paid much attention, and the fidelity of the forms of these parts indicates the accuracy of all assembly operations.
Of the proprietary technologies of famous manufacturers, we separately note the original designs of the hinge, which increase the reliability of the tool and extend its life.
ROCKWELL HARDNESS EVALUATION (HRC)
Hardness is the resistance of a material to local plastic deformation when a more solid body is introduced into it - a tip (indenter). The latter is a low-deforming body (diamond, hard alloy, hardened steel) of a certain geometric shape (ball, pyramid, cone, needle).
The magnitude of hardness is judged by the size of the resulting deformation (imprint). Depending on the test method, the properties of the tip and the material under test, evaluation is carried out according to various criteria.
The most widely used measurement is indentation. There are several methods, but the Rockwell method has become the most popular (especially in production conditions). When measuring using this method, a standard-type tip is pressed into the surface by sequentially applied loads - preliminary F0 = 98 N and main F1 = 1373 N. The total force acting on the tip:
F = F0 + F1 = 1471H
The conventional unit of hardness is the value corresponding to the axial displacement of the tip by 0.002 mm. The hardness value is determined after removing the main load (F1) directly on the scale of the device. The formula for calculating HRC is as follows:
HRC = 100 - (h-h0) / 0.002,
where: h0 is the penetration depth of the tip into the test body under the action of the force F0;
h is the penetration depth of the tip under the action of the full load F, measured after its removal.
When measuring, at least three experiments must be carried out.
There is no exact way to convert HRC to other units of measurement (obtained by other methods). Comparisons are made in tables.
TEST CONDITIONS
Considering all of the above, we have tried to full program"Test 12 pliers. The most popular models with a length of 180 mm were selected for testing. We did not insist that the samples be with the same handles or with the same coating.
MECHANICAL TESTS
They were held on the basis of the laboratory "Testing materials and structures" of the department "Applied Mechanics" MSTU. N. E. Bauman. Qualified employees conducted experiments in accordance with the tasks set by the editors.
EXPERIENCE #1.
Preliminary quality assessment. First of all, we conducted a primary inspection of the "exhibits". The presence of backlashes, the accuracy of the geometry of the jaws, and the ease of spreading the handles were noted. The comments were included in the item "Consumer analysis" of the descriptions of the models.
EXPERIENCE #2.
Determination of the hardness of steel. The measurements were carried out on a Rockwell TK-14-250 hardness tester separately for four zones: a small notch zone (in the area of the jaws), a large notch zone (in the area of a round lumen), a bite zone and an axial zone. Note that it was not possible to determine the hardness of the cutting elements due to technical limitations, so the "thick" part of the profile was measured.
EXPERIENCE #3.
Structural strength testing. In accordance with the requirements of GOST 17440-93, the strength of the handles was evaluated. To do this, a force of 800 N (about 80 kg) was applied to the handles, previously freed from the coating, at a distance of 80 mm from the hinge axis. Between the jaws of the pliers, a plate with a hardness of 40 HRC and a thickness of 2 mm was placed at a length of 8 mm from the top of the jaws.
For experiments, we used a universal testing machine 1958U10 No. 95. The loading was repeated 4 times. During the experiment, the dependence between the force and the mutual displacement (approach) of the points of application of forces was recorded. Let us say right away that under loading with a force of 800 N, no plastic deformations were noted in any of the samples, i.e. pliers of all firms have fully retained their performance.
For a comparative assessment of the rigidity of the structure, the bending stiffness of the handles was calculated (the force required to bring the points of application closer by 1 mm).
EXPERIENCE №4.
Snack tests. The experiment also took place in accordance with the requirements of GOST 17440-93.
A piece of high-strength steel wire (diameter - 1.6 mm, tensile strength - 2200 MPa) was installed between the blades of the snacker and the handles of the pliers were loaded with a force of 570 N (about 57 kg). According to the appearance or absence of plastic deformations of the blades, their durability was evaluated.
In addition to the program tests, we decided to conduct another experiment. There is an opinion that well-sharpened pliers should cut a sheet of paper. Although, in our opinion, it is not entirely correct to judge the cutting ability of tools based on the results of this "test", nevertheless, we did it.
EXPERIENCE No. 5.
Retention tests. A steel bar (diameter - 4 mm, hardness - 5 HRC) was installed between the jaws of the pliers and, by selecting the force applied to the handles, it was loaded with a fixed force of 1500 N (about 150 kg). After that, a gradually increasing torque was transmitted to the rod. Up to a certain value, the rod remained motionless, then it began to scroll (a breakdown occurred). According to the magnitude of the moment turning the rod relative to the sponges, indirect conclusions were made about their holding capacity.
According to laboratory specialists, this parameter deserves special attention, since one of the main functions of pliers is to hold details.
EXPERIENCE No. 6.
Evaluation of the ergonomics of pliers. One of the most important indicators is the limiting force transmitted by the pliers to the jaws when handmade. To a large extent, it depends on the ergonomics of the handle, but design features also contribute to it.
In our experience, successively, men and women, with the help of various samples, tried to give out the maximum that they are capable of. Measurements were made on a universal testing machine 1958U10 No. 95.
CHEMICAL TESTS
In this series of experiments, we studied the resistance of samples to the effects of petroleum products on them (or the petrol-oil resistance of pliers). The most stringent conditions were set, but let's say right away that most of the models passed the test.
The tests were carried out on the basis of the laboratory of the department "Chemistry" of the Moscow State Technical University. N. E. Bauman. The experiments were carried out by qualified specialists, we only set them tasks.
EXPERIENCE No. 7.
Petrol resistance. For 24 hours, 12 pliers were placed with one handle in AI-92 gasoline. The weights of the samples before immersion and after removal from gasoline were recorded on electronic balances. The next two measurements were taken after 24 and 120 hours of drying. All mass changes were correlated with the initial values.
EXPERIENCE No. 8.
Oil resistance. The only difference from the previous test was that instead of gasoline, the pliers were immersed in BP Visco 3000 10W40 oil and did not take a fourth measurement, corresponding to 120 hours of drying. The comments in this case came down to a single conclusion - all the pliers easily passed the test.
TECHNICAL SPECIFICATIONS
STEEL: alloyed chrome-vanadium; coating - bluing for protection against corrosion.
HANDLES: two-component.
LENGTH: 180 mm. Weight: 76 g.
FEATURES: original hinge design; hardening of sponges and cutting edges with high frequency currents; return spring for opening the handles.
RANGE OF THE MANUFACTURER: handles - one-component, two-component, electrically insulating (up to 1000 V); coating - chrome-plated, burnished. Length of models: from 160 to 200 mm.
CONSUMER ANALYSIS
The assortment of Bahco, a well-known global manufacturer of professional equipment, has always been distinguished by quality and an abundance of original solutions. The pliers we tested were no exception.
CONSTRUCTION: Bahco universal pliers models are very different from similar products from other companies. Form plastic handles does not have wide parts in front of the rods - there is nothing to rest against. But the rubber pads completely cover the ends - it is easy to produce longitudinal pressure.
Metal parts are rounded not only for fashion reasons, but also in order to facilitate access to difficult places. In general, the geometry of the parts is completely unusual - Hi-Tech, in a word.
The originality of the design of the hinge lies in the fact that the fixed engagement of the axis in one of the halves does not look like a round rod, but an asterisk. The hardness of the metal in this place differs "demonstratively" - the material is less hardened. Technologically, this ensures a long service life of the hinge without loosening. Initially, there is no backlash in the hinge at all, but it opens easily with one hand, the move is smooth. The hardness of the remaining parts is maintained very strictly.
The sharpening of the blades allows you to effortlessly cut even a thin sheet of paper. This is due not only to their special hardening with the help of high-frequency currents, but also to the fact that there is a small gap between the jaws, and all the pressure of the handles is first transferred to the cutting edges.
Blued coating does not tolerate moisture well. Note that Bahco has models that differ from the 2628G only in chrome; there are modifications with a one-component handle (gasoline-oil-resistant) and electrically insulating (with traditional protective "casings" that prevent contact of fingers with metal).
The original part - the return spring (by the way, can be switched off) - is on all Bahco pliers. A thin strip of elastic steel at one end goes under the plastic of the first handle, and at the other it springs against the approximate second handle.
To help the customer, the packaging of all tools graphically shows all the "talents" of each particular model with a special marking.
TEST RESULTS: the high professional "applications" were fully confirmed by our tests. The rigidity of the structure is excellent: even with a heavy load, the handles approach hardly noticeably. The hardening of the jaws is correct: there are no deformations left after contact with the test sample. The holding capacity of the notch is very good, and the force transmitted to the jaws by hand is one of the greatest.
Prolonged "swimming" in gasoline led to a slight shrinkage of the rubber lining. Handle oil is harmless.
SUMMARY: original model with outstanding abilities. It does not only have chemical resistance (corresponding Bahco pliers have a different "lining"). Optimal for work in the workshop or workshop.
Pliers are universal.
TECHNICAL SPECIFICATIONS
STEEL: high-carbon tool; coating - bluing and varnishing to protect against corrosion.
LENGTH: 180 mm. Weight: 263 g.
RANGE OF THE MANUFACTURER: handles - one-component, two-component, electroinsulating; coating - chromium-nickel, burnished. Length of models: from 100 to 280 mm.
CONSUMER ANALYSIS
The international group of companies Brigadier has already gained worldwide fame as a manufacturer of high-quality professional equipment and building materials.
CONSTRUCTION: simple and solid - that's the exact definition for this model. In strict accordance with the canons of "pliers construction", Brigadier specialists have made a classic product.
The protrusions on the front of the plastic handles protect the hand from slipping forward. They are also included in the work when squeezing widely spaced pliers. Invisible at first glance, there are roughnesses only on the outer surface of the plastic, the rest of the zones are smooth.
The hinge is made with high quality - there is no backlash, it works smoothly, with one hand it easily opens almost to the limit.
The hardness of the steel turned out to be relatively low. When the hardness tester passed through the large notch and the bite zone, a gradual increase in values was noticeable.
All parts are blued, and not hidden under plastic, they are also varnished. Such protection is not designed for aggressive environments; this model is not "street", but "shop", it is better not to leave it in the rain.
TEST RESULTS: pliers showed good values in terms of structural rigidity, they spring slightly under load.
Hardening of cutting elements - not resistant to heavy loads. After passing the endurance test, small dents remained on the blades, visible through the light with the lips closed.
According to the ability to transmit forces and hold a scrolling rod, the model fell into the middle of the list.
As you would expect, the one-component handles have successfully passed the tests for petrol and oil resistance.
SUMMARY: professional model for everyday work. It did not distinguish itself by outstanding indicators, but it transmits average efforts regularly. It has good petrol and oil resistance, but not the strongest moisture protection, therefore it is suitable for workshops or workshops.
Universal pliers with ergonomic handles.
PURPOSE: holding parts with great effort; cutting electrical wires, etc.
TECHNICAL SPECIFICATIONS
FEATURES: original hinge design; induction hardening of cutting edges.
LENGTH: 180 mm. Weight: 262 g.
RANGE OF THE MANUFACTURER: handles - one-component, two-component, electrically insulating (up to 1000 V), uncoated; covering - varnished, chrome-plated, chrome-plated with polishing. Length of models: from 160 to 200 mm.
CONSUMER ANALYSIS
Gedore is a world famous professional tool brand. High-quality and reliable, it has won the trust of many European users. The range of offered goods is very wide, but with a pronounced bias towards "power" models.
CONSTRUCTION: there is a certain grace in the simplicity of the form of the Gedore 8245-180 - it is pleasant to hold such an instrument in your hands: nothing superfluous, everything is in place. Rubber pads are not felt by hand, as a separate element of the handles. They cover only those areas that account for the maximum pressure, that is, the half farthest from the hinge, this makes them discreet and inconspicuous. The shape of the handles themselves is convenient: moderately thin, they allow you to work both accurately and strongly. The thumb and forefinger fit comfortably into the recesses on the handles, allowing you to transfer force even to wide-open jaws.
The originality of the design of the hinge lies in the fact that the axial rod, pressed into the fixed handle, at the place of pressing is not round, but resembles a rounded gear. Such a system is stronger: it does not loosen over the years, it does not form a backlash. By the way, it is not there at all - the mechanism is assembled very precisely, it works smoothly, fully opening with minimal effort.
The material from which the pliers are cast has a high hardness, unchanged at any point of the product, except for the cutting edges, hardened in a special way. The geometry of all elements - from the symmetry of the side faces to the accuracy of the dimensions of the jaws - is maintained very accurately.
Good corrosion protection - galvanized. Such a tool, falling into the rain, will not fail.
Good sharpening of the blades makes it easy to cut even a thin sheet of paper.
TEST RESULTS: the mechanical performance of the pliers turned out to be very high, both men and women gave high values for the transfer of force to the sponges. Good results also gave a check on the rigidity of the structure.
The only low indicator was obtained when evaluating the holding capacity of the sponges. Inspection of the notch showed that it was not sharpened sharply. On the one hand, this reduces the reliability of gripping thin parts, on the other hand, the notch is not threatened by grinding.
After experiment No. 4, a barely noticeable deformation remained on the cutting elements, which can be seen only when viewing the compressed tool through the light. It must be said that when cutting paper after this experiment, the sheet remained uncut precisely at this point. So it is better not to use pliers for biting hard materials.
Despite the fact that after a 24-hour exposure to gasoline, the handle lengthened, during the drying time "everything returned to normal." A few days later, it was possible to distinguish a sample that had passed chemical tests from an inviolable one only by the smell of gasoline. Rubber inserts have not lost their qualities.
SUMMARY: high quality professional tool. Two-component handles have not only good ergonomics, but also high petrol and oil resistance. Chrome-plated coating reliably protects parts from rusting. The tool is suitable for hard work in harsh environments
Kraftool Will 65/180 22002-1-18
Price: retail - $18 (June 2003).
PURPOSE: holding parts with great effort; work with material under tension; cutting electrical wires, etc.
TECHNICAL SPECIFICATIONS
LENGTH: 180 mm. Weight: 238 g.
FEATURES: metal cross pin inside the handles to prevent them from slipping off the rods.
RANGE OF THE MANUFACTURER: handles - one-component, two-component, electroinsulating, without covering; coating - chrome. Length of models: from 160 to 200 mm.
CONSUMER ANALYSIS
A wide range of professional tools under the name Kraftool is available to the Russian buyer. Pliers with this brand are found in workshops and repair shops, but also for home use they fit perfectly.
DESIGN: the originality of this particular model is that the soft plastic handles are cast directly on the rods (pins are welded to the latter and it is impossible to put the handles on otherwise). Such measures completely exclude the slippage of plastic during the transfer of any effort, because it sits literally like a glove.
The handles are not only electrically insulated, but also molded from plastic that is pleasant to the touch, and their shape is thought out and convenient. Wide "aprons" closer to the axis of rotation do not allow the hand to slip forward and touch the metal (after all, it may be energized). Next comes the narrow “waist”, which comfortably fits the thumb and forefinger of the working hand. It is here that the most force is transferred to the rods when the wide open pliers are squeezed. Therefore, in this place (and from the inside, closer to the end of the handle) the surface is covered with "peas" (corrugated with dots). And to transfer large forces in a compressed state outer sides the far parts of the handles are smooth.
The assembly quality of the pliers emphasizes their professionalism - there is no backlash in the mechanism, the handles open easily. But not to the full width, but to about half (this is how the tool is "plowed" most often), then you will have to make a little effort, but everything is doable with one hand.
The geometry of the sponges for all samples is almost perfect, which indicates high quality assemblies. A fine notch does not start immediately - about 2 mm of the compressing edges are flat - this way you can clamp the part more tightly. The cutting planes are well sharpened, they even cut paper.
The hardness of the material is quite high and differs significantly in different parts mechanism. This indicates a special hardening technology.
Chrome-plated - reliable protection against corrosion. Thanks to him, the tool not only has an attractive appearance, but also works in the rain on the street as reliably as in a dry shop.
TEST RESULTS: pliers turned out to be one of the most flexible when testing for the strength of the structure, but they invariably restored their shape after removing the load. Blade cutting elements shown high strength: after testing, no traces were left on them. Low rates were obtained when evaluating the "power" qualities of pliers, with all the perceived convenience in transferring power to the sponges, they were inferior to many other samples.
The pliers passed the oil resistance test very well. So even if you forget them overnight in a puddle of gasoline, nothing bad will happen.
SUMMARY: high quality tool for professional use. It features a thoughtful shape of an electrically insulated handle. It is molded directly on the rod with a pin, sits firmly without slipping. The tool is well protected against corrosion and chemical influences, suitable for work in extreme conditions, for example, in car workshops where frequent contact with water, salt or gasoline.
Universal pliers with ergonomic handles.
PURPOSE: holding parts with great effort; cutting electrical wires, etc.
TECHNICAL SPECIFICATIONS
STEEL: alloyed chrome-vanadium; a covering - the chromeplated anticorrosive, opaque.
HANDLES: two-component; protective protrusions that prevent hand contact with the part.
LENGTH: 180 mm. Weight: 245 g.
RANGE OF THE MANUFACTURER: handles - one-component, two-component, electroinsulating; coating - chrome. Length of models: from 160 to 180 mm.
CONSUMER ANALYSIS
Brand "Legioner" - new on Russian market. A professional instrument with this name is created using original design solutions and, in addition to professional quality has an attractive appearance.
DESIGN: the handles of the pliers are divided into two parts. The inside is finished with plastic, and on top is dressed in soft rubber, which improves contact with the palm. Moreover, the ergonomic insert stretches along the entire surface, even covering the protective "apron" (the extension of the handle near the hinge, preventing the hand from slipping forward). Thanks to its presence, the tool can safely rest on the detail.
The pliers are made with high quality, there is practically no play in the joints. The geometry of the sponges is also strictly maintained, which indicates high level all factory operations.
Noble matt sheen - the effect of the usual anti-corrosion chrome plating. The special technology of its final refinement allows you to give the pliers an advantageous appearance. And under the coating is hidden steel of high hardness, strictly maintained in all details.
The sharpness of the cutting edges deserves praise: not every tool has them sharpened so that it is easy to bite even one sheet of paper.
Pliers are easy to use with one hand. Easily they open up to medium corners. Next, the handles need to be “pushed” a little, and only for the fullest opening will you need to take the tool in both palms. By the way, in this position, the "aprons" already noted by us at the top of the handles turn out to be advantageous - the angles created by them allow even in this position to transfer rather large efforts to the levers.
TEST RESULTS: in all mechanical tests, the pliers proved to be confident middlings. Not champions, of course, but quite comfortable for professionals.
The cutting elements demonstrated good durability: there were no traces of a rather severe impact in experiment No. 4 on them.
Ergonomic handles are able to transfer quite a lot of force to the sponges.
The only thing that the pliers could not cope with was a one-day aging in gasoline: the plastic was deformed, and the rubber insert lost its elasticity. Prolonged oil "baths" did not cause any harm to the instrument.
SUMMARY: professional model with good working qualities. Favorably differs from others attractive design. Noble matte chrome reflection anti-corrosion coating both efficient and functional. Pliers do not always tolerate prolonged exposure to harsh chemicals (such as gasoline), so they are more suitable for the workshop or for the home.
Pliers are universal.
PURPOSE: deduction of details; cutting electrical wires, etc.
TECHNICAL SPECIFICATIONS
STEEL: alloyed chrome-vanadium; a covering - the chromeplated anticorrosive, polished.
HANDLES: one-component; protective protrusions that prevent hand contact with the part.
LENGTH: 180 mm. Weight: 276 g.
FEATURES: laid on cutting block.
RANGE OF THE MANUFACTURER: handles - one-component, two-component, electroinsulating, without covering; coating - chrome-plated, burnished. Length of models: from 145 to 225 mm.
CONSUMER ANALYSIS
NWS is a renowned professional equipment brand. For the production of hand tools, the company uses high quality materials Solingen, as evidenced by the markings on the pliers we tested.
CONSTRUCTION: polished chrome plated to protect the pliers from rusting. The appearance of the tool undoubtedly benefited from this, and the durability of the protection has improved.
The hardness of the material is high enough to ensure a long service life. Its value at various measurements showed that hardening specifically strengthens the jaws and the axis (their hardness is higher). The rotational mechanism works smoothly and it is easy to open more than halfway with one hand. However, it already initially has a small backlash.
The cutting parts that are placed relative to the parts help to cut the material more accurately (the cutting line is more visible). The blades themselves in this "situation" are located on the line of the edge of the sponges. By the way, the type of pliers only benefits from this.
Effective and transparent handles made of elastic material. Their outer surfaces are strewn with dots ("peas") that reduce slippage. And the front end is trimmed with protrusions that prevent the palms from breaking forward with a longitudinal emphasis. The same elements allow you to transfer force to the wide-open handles.
The accuracy of the factory execution of all forms is impeccable.
TEST RESULTS: the handles showed "miracles of flexibility". When a test load of 800 N was applied to them (specified by GOST), the measurement points approached almost a centimeter. However, each time the pressure was released, there was no residual deformation, so that all requirements are met.
After a test test, traces visible to the eye remained on the cutting surfaces. So the reinforced appearance of the blades is not a reason to overload them: they will last a long time only when cutting soft metals.
The fine notch did not show great holding power. The "transfer" function proved to be much better: it is easy to transfer a decent force to the sponges.
The chemical resistance test was excellent. However, we did not expect anything else from one-component pens.
SUMMARY: good protection from external influences allows you to complete with these professional pliers even auto repair shops (neither gasoline nor moisture will harm them). The tool did not show transcendental abilities, but it is quite suitable for solving everyday tasks.
Universal pliers with ergonomic handles.
PURPOSE: holding parts with great effort; cutting electrical wires, etc.
TECHNICAL SPECIFICATIONS
STEEL: alloyed chrome-vanadium; coating - chrome anti-corrosion.
HANDLES: two-component; protective protrusions that prevent hand contact with the part.
LENGTH: 180 mm. Weight: 253 g.
FEATURES: original hinge design; induction hardening of cutting elements.
RANGE OF THE MANUFACTURER: handles - one-component, two-component, electroinsulating, without covering; coating - chrome-plated, burnished. Length of models: from 110 to 225 mm.
CONSUMER ANALYSIS
Orbis is a professional tool.
DESIGN: the underlined "professionalism" of this tool is visible in everything. Handles with large protective lugs prevent the hand from slipping forward. They are also included in the work, transferring forces when squeezing wide-open pliers. Rubber tabs, which strengthen the places of application of maximum forces, have a rough surface. Their material is dense, its slight compression is felt only under heavy loads.
There is no backlash in the hinge, and it should not appear even when working with heavy loads. For reliability, the end of the hinge axis, pressed into the fixed half, is not in the form of a round rod, but a gear with four rounded teeth.
On the inside of the cutting elements, it can be seen that the blades have undergone a special hardening, which increases their durability. They are sharpened so well that with minimal pressure they cut the paper. All other details give off a characteristic brilliance - the metal is chrome-plated to protect against corrosion.
The hardness of the steel from which the pliers are made is high. In the region of the axis, the metal is slightly "released" (hardness is less) - this situation is typical for products that have undergone technological production.
TEST RESULTS: the design did not show high rigidity. When loaded with eight hundred Newtons, the control points approach each other by almost half a centimeter, however, when the pressure is removed, the pliers restore their shape (by the way, GOST requires this).
The hardened surface of the blades did not receive visible deformations after experiment No. 4, but it became less brisk to fight, for example, with a paper sheet. Having made many cuts with a new sample, we noticed that razor-sharp surfaces gradually come to the usual state for all pliers - sharp, but significant efforts are required to cut a paper sheet.
The holding abilities of the tool turned out to be not very high, but the force with the help of pliers turned out to be quite decent.
Prolonged soaking in gasoline significantly deformed the handle - the rubber insert hardened and decreased slightly, while it itself stretched out a lot and did not return to its original state after drying. Oil "baths" were painless for the instrument.
SUMMARY: professional model, suitable for working with heavy loads. The hinge axis is reinforced, the parts are chrome-plated to protect against corrosion, the ergonomic handles are equipped with protective "aprons". The tool is not resistant to long-term exposure to gasoline, so it is more focused on carpentry or locksmith workshops.
Pliers are universal.
PURPOSE: deduction of details; cutting electrical wires, etc.
TECHNICAL SPECIFICATIONS
STEEL: alloyed chrome-vanadium; coating - nickel-ferrum (Ni-Fe) anti-corrosion, matte.
HANDLES: one-component; protective protrusions that prevent hand contact with the part.
LENGTH: 180 mm. Weight: 308 g.
RANGE OF THE MANUFACTURER: handles - one-component, two-component, electroinsulating, without covering; coating - chrome-plated, burnished. Length of models: from 160 to 200 mm.
CONSUMER ANALYSIS
Remocolor products combine affordable price and quality for professional use.
CONSTRUCTION: The plastic from which the handles of the pliers are molded, though firm to the touch, is flexible enough to last a long time. If you leave a dent on it with a sharp object, then gradually it will restore its shape. The geometry of the handle allows you to rest while working, without fear that your fingers will jump forward.
The tool is assembled soundly, there is no backlash. The quality of the material is strictly maintained - the jaws are hardened along the entire surface in the same way, on the axis the hardness is slightly less, and for all three measurements (the average value is placed in the table).
The mechanism works well and is easy to open with one hand. The parts are coated with an anti-corrosion NiFe coating, its matte sheen gives the product solidity.
TEST RESULTS: Plier blades require careful handling. After loading them in experiment No. 4, deformations remained visible even to the eye on the cutting edges. The initial sharpening did not provide cutting of the paper sheet. Thus, it is better to "bite" only the wires, they are soft enough - there will be no harm.
The design has been tested for rigidity: under load, the handles spring almost imperceptibly. The notch also performed well - the torque required to rotate the test rod was large.
But the ergonomic indicators of the handles turned out to be low - the wide handles did not allow you to properly press the levers even with a small opening. The length of the fingers, of course, is enough to reach the second handle, but you can’t give out special power with an open palm.
The plastic handles have passed the petrol-oil resistance test without damage. When aged in gasoline, they, however, first changed their shape, but after drying they restored their original appearance.
SUMMARY: model suitable for both home use and for work in production. Wide handles are oil and gas resistant, but not designed to transmit significant forces.
Pliers are universal.
PURPOSE: deduction of details; cutting electrical wires, etc.
TECHNICAL SPECIFICATIONS
STEEL: alloyed chrome-vanadium; a covering - the chromeplated anticorrosive, polished.
HANDLES: one-component; protective protrusions that prevent hand contact with the part.
LENGTH: 180 mm. Weight: 313 g.
FEATURES: original hinge design.
CONSUMER ANALYSIS
The Stanley professional tool has been one of the trendsetters in the world market for more than a dozen years. This brand has reached a similar level of fame in Russia. Many salespeople use the Stanley as a "watershed" when comparing everything else as "better" or "worse". We could not help but hold the pliers of this brand in our hands.
CONSTRUCTION: all forms are classical. No deviations from accepted standards in the geometry of metal parts or plastic handles were found.
Handles are simple, without "bells and whistles". There are protective lugs at the front and a rough surface on the top of the plastic.
The hinge is accurate - no backlash, works smoothly, but we managed to open only one of the three tested samples with one hand to the end. In the other two, he was easily exposed only to the average "span". For a long and reliable service, the designers strengthened it by pressing the axis of rotation into a fixed part with gear-like engagement.
Wide edges, not hidden in plastic, polished. As a result, the chrome coating has acquired a mirror reflection - it looks more spectacular. Functionally, chrome is a reliable anticorrosive agent.
The hardening of these pliers is carried out cunningly - this was evident from the hardness measurements. The values, which fluctuated everywhere from HRC 45 to 47, fell closer to the hinge to 37-39 - the metal is softer here.
The cutting elements are sharpened with high quality - without special efforts bite even a single sheet of paper.
TEST RESULTS: Stiffness tests gave poor results. Under load, the handles are noticeably closer, but when released, they return to their "legitimate" place. The loading of the cutting elements left minor marks on the blades, so to increase the resource it is better to cut something softer than hardened bars with them.
The "strength" abilities of the pliers are commendable for a model with single-component handles. The holding capacity of the sponges is also on top.
The test for oil resistance once again confirmed the main advantage of simple plastic handles - insensitivity to gasoline.
SUMMARY: simple and high-quality model, created for hard work in harsh conditions. Differs in good power data, moisture protection and petrol-oil resistance. Suitable for a wide variety of professional applications.
Universal pliers with electrically insulating (up to 1000 V) handles.
PURPOSE: deduction of details; work with material under tension; cutting electrical wires, etc.
TECHNICAL SPECIFICATIONS
STEEL: alloyed chrome-vanadium; coating - bluing and varnishing to protect against corrosion.
HANDLES: one-component electrically insulating (up to 1000 V); protective protrusions that prevent hand contact with the part.
LENGTH: 180 mm. Weight: 300 g.
RANGE OF THE MANUFACTURER: handles - one-component, electroinsulating; coating - burnished. Length of models: from 160 to 180 mm.
CONSUMER ANALYSIS
The Stayer trademark has firmly taken root in the Russian market. Both professionals and amateurs have something to choose from in the instrument with this name. Reliability and durability are emphasized by the name itself (stayer - long-distance runner).
CONSTRUCTION: simple, unsophisticated model. Well-made: the play in the rotational mechanism is small, the quality of sharpening the blades is good (despite the fact that the pliers do not cut paper). The hinge works smoothly, easily opens with one hand to the extreme position.
The plastic handle is securely seated with adhesive. By the way, its shape corresponds to the name of the pliers - "electrically insulated": a wide element on the handle prevents the palm from slipping forward and does not allow contact with the part. So when working, it is safe to rest with pliers.
The hardness of the samples is high and constant in all elements, which indicates the exact holding of the technology during production. On two of the three samples, the geometry of the sponges is not ideal (one rectangle is slightly smaller than the other), but this can only be noticed with the naked eye.
The anti-corrosion coating is quite simple, the black color of the pliers indicates that they were only burnished. Therefore, this product is best suited for work in a workshop or workshop, it is contraindicated for exposure to rain.
TEST RESULTS: bending stiffness and deflection under load are not the highest, but quite sufficient for long and reliable tool operation. The durability of the blades is commendable - the number of samples on which, after the removal of the load in experiment No. 4, deformations remained, amounted to half of those tested. Stayer just got into the "resistant" group.
Good results in terms of the moment of turning the bar in the jaws indicate a well-executed notch. But it was not possible to transfer great efforts with the help of a wide handle - you cannot squeeze them strongly even in an incompletely opened state (the palm is not large enough for this). This is the "payment" for electrical insulation. And, by the way, for petrol and oil resistance - in these tests, the samples showed excellent results.
SUMMARY: solid pliers suitable for work at home or at work. Electrically insulated wide handles do not allow the transfer of large forces, but they are distinguished by good petrol and oil resistance.
Universal pliers with ergonomic handles.
PURPOSE: holding parts with great effort; cutting electrical wires, etc.
TECHNICAL SPECIFICATIONS
STEEL: alloyed chrome-vanadium; coating - polishing for protection against corrosion.
HANDLES: two-component.
LENGTH: 180 mm. Weight: 266 g.
FEATURES: non-standard geometry of the inner surface of the jaws (shortened, without large notches, with an extended cutting zone); additional notch on the side closest to the handles.
RANGE OF THE MANUFACTURER: handles - one-component, two-component, electroinsulating, without covering; coating - chrome-plated, burnished. Length of models: from 150 to 200 mm.
CONSUMER ANALYSIS
CONSTRUCTION: These pliers look very solid. The red plastic handles are almost completely hidden in "covers" made of rough rubber. Handles look elegant (if only such an epithet is applicable to pliers). In the palm of your hand, the tool lies comfortably, and due to the right angles and thin plastic coating, it is effective in use.
Backlash in the hinge is minimal, the mechanism works accurately. Opening is not difficult in any way, and to the largest angles it is easily done with one hand.
The hardness of the metal, which is high on the jaws and on the cutting surface, noticeably decreases in the axial part and in the zone of a wide notch. This indicates the manufacturability of production - hardening of parts takes into account the features of the tool.
Small protrusions on the jaws in front of the blades do not allow the cutting parts to be pressed tightly against each other, leaving a gap of hundredths of a millimeter. Such measures protect the sharpening of the blades, but it was for this reason that the pliers could not cope with cutting the paper. By the way, the same "emphasis" leaves a gap (about 0.1 mm) between the jaws visible only in the light.
Among those tested were only two samples of the American type (unlike all the others belonging to the German type) - without a large notch and a round hole between the jaws and blades. Workman is one of them. Its cutting elements are slightly elongated compared to the dimensions adopted for such a tool. The front notch by 3 mm does not reach the edge of the jaws, some of which are flat, but not polished (so that the part does not slip). A small notch on the side closest to the handles goes all the way to the plastic.
Plastic, by the way, is electrically insulating (up to 1000 V), but for frequent work under voltage better pliers do not use because the lack of protective plastic tabs forces the craftsman to be careful not to forefinger did not slip or touch the metal.
TEST RESULTS: the material of the sample, and the entire structure as a whole, proved to be very durable. Under high loads, their deflection was very small, and even the harsh impact of experiment No. 4 did not leave any marks on the cutting elements.
The highest results were obtained in terms of "power" characteristics. The remarkable moment of scrolling of the clamped steel rod indicates the quality of the notch, and the great value of the force transmitted to the jaws indicates the excellent transmission abilities of the mechanism and the well-thought-out shape of the handles. Not the last reason is the shortened distance from the jaws to the axis of rotation compared to other models (the shoulder is smaller - the force is greater).
Soaking in gasoline affected the rubber coating: it shrunk, became a little smaller and stiffer. Of course, such a tool can continue to work, but not as new. Oil "baths" do not change the shape of the pliers, but the rubber becomes more slippery, and its texture does not allow the handles to be wiped dry.
SUMMARY: good professional model. Best suited for dry environments such as carpentry. Distinguished by enviable "power" indicators, which are largely due to original form(one notch instead of two on the jaws and a shortened distance from the edge to the axis).
Pliers are universal.
PURPOSE: deduction of details; cutting electrical wires, etc.
TECHNICAL SPECIFICATIONS
STEEL: alloyed chrome-vanadium; coating - chrome anti-corrosion.
HANDLES: one-component; protective protrusions that prevent hand contact with the part.
LENGTH: 190 mm. Weight: 313 g.
FEATURES: non-standard geometry of the inner surface of the jaws (shortened, without large notches); additional notch on the side closest to the handles.
RANGE OF THE MANUFACTURER: handles - only one-component; The finish is chrome only. Length of models: from 115 to 215 mm.
CONSUMER ANALYSIS
These pliers belong to the "Mechanic" series of tools. The Enkor company also has another series - Precise Mechanics, which consists of models that are more suitable for working with electronics and other "simple" tasks.
CONSTRUCTION: The shape of the pliers differs greatly from that generally accepted among today's manufacturers. The fact is that they belong to the American type (most of the models in our test belong to the German class). In the assortment of "Enkor" there were no samples with a length of 180 mm; we took a 190 mm tool for testing and tested it, regardless of the difference in "growth" (GOST offers a technique only for 180 and 200 mm pliers).
With a larger overall length of the sponge model, it turned out to be the shortest of all the samples taken. In a word, it is clear that all the efforts of the designers were aimed at increasing the transmitting capabilities of the instrument. Since the cutting elements on the jaws are of the usual length, the remaining space was only enough for one notch. It is quite large - after all, the model is power. On the other side of the hinge, another notch is provided - smaller. It is able to clamp even thin parts - the edges are brought together with a gap of about a millimeter.
The build quality gives no reason for complaints: there is practically no backlash, all dimensions are exactly the same. The mechanism works smoothly, but with one hand it is easy to open the pliers only to medium angles, then you cannot do without the help of the second.
The hardening of the metal is of high quality, uniform - the hardness in all details is almost the same, everywhere the measurements showed high values.
With apparent simplicity, the handles are well thought out. Wide protrusions in front do not allow the palm to slide off, besides, on the upper part along the entire length of the cover, the plastic is made rough. The material is elastic and does not bend the hand during the transfer of significant efforts.
TEST RESULTS: pliers successfully passed all tests. The design has a commendable rigidity, so that you can fearlessly apply the greatest efforts to the handles. The holding ability of the jaws is at a height - it took a high torque to turn the steel bar.
In terms of force transfer, pliers took one of the first places, so the main task of the designers - to create a "power" model - was completed. sharpening cutting edges corresponds to the status of "strong man": he transfers loads well.
One-component pliers handles successfully passed the test for oil resistance. Slightly elongated after a one-day stay in gasoline, they regained their shape the very next day.
SUMMARY: solid professional pliers, optimized for power work. The transmission of high forces is facilitated by an unusual geometry with elongated handles and shortened jaws. The handles are petrol and oil resistant, so the tool is ready for harsh conditions.
Pliers and pliers are among the most popular tools. This is true for both professionals and home craftsmen. They are indispensable for electricians, mechanics and many other professionals. And how to do without them in everyday life is simply incomprehensible to the mind. With all the variety of the tool market, it is difficult to imagine a more versatile and necessary thing.
But why do we say they? Is there a difference between pliers and pliers? There is also a lot. It so happened that no one really makes a difference between them. This is not surprising since they are very similar in appearance. But, nevertheless, there are differences and very significant. These differences are taken into account not only by users, but also by manufacturers. For each of them their technical requirements during production and their GOSTs. What is the difference between pliers and pliers? What kind of work are they for? How to determine the quality of this tool? This will be discussed in the article.
Hinged - pliers tool, its types
The history of the creation of this type of instrument, and it belongs to the pliers, goes back to the era of at least the Greek gods. Mankind has known blacksmith's tongs since time immemorial. Time passed, changed human society, and the instrument changed. When exactly and in whose head the idea to create a prototype of modern pliers arose, no one knows. It's a pity. The thing turned out to be very necessary and practical.
There are many varieties of pliers and pliers. These include:
- ticks;
- pliers;
- wire cutters;
- round nose pliers;
- pliers.
Each category has "subspecies" that have different sizes. working surface(sponges), purpose and form. For example, round-nose pliers are very convenient for cutting cable cores (shown in the photo below). The conical shape of the working surface allows you to comfortably bend the cable core under the clamp of different diameters. There are models that are additionally equipped with wire cutters. To work with delicate materials, special nozzles made of plastic or other material are used. The presence of notches on the round-nose pliers allows you to securely fix the part during board soldering, and the special shape of the jaws allows you to get into the most inaccessible places of the microcircuits (the angle of inclination of the jaws can be different).
The same applies to nippers. Different shape of the cutting part, its different size, different purpose. For example, wire cutters for repairing electronic equipment are smaller. For cutting cables, no matter what purpose, they are not suitable. Theoretically, this is possible, but both the worker and the tool are tormented. In the worst case, you can be left without wire cutters.
Types of pliers. Features and scope
Already from the name, the characteristic appearance of this tool is “visible”: flat jaws with notches, swivel and handles. Pliers are indispensable during any plumbing or electrical work. Due to the flat surface, they hold a part of any shape well. With the help of pliers, you can bend cable cores, wiring, wire and metal. The dimensions of the parts are determined by the dimensions of the pliers themselves (usually do not exceed 200 mm). It is very common to use this tool as a wrench, for loosening / tightening nuts. different diameter. This is still somewhat unusual work for them, but what to do when there is no key of the required diameter?
Pliers are divided not only by size. For the convenience of the user, manufacturers produce different types working surface:
- elongated narrow jaws - for the ability to work in places with limited access;
- jaws curved at an angle are designed to work in hard-to-reach places, especially in electronics;
- the so-called "platypus", in fact it is a kind of tweezers, but with a large compression force;
- with special nozzles, for work with fragile and delicate materials.
For work in electrical installations or with conductive parts of equipment, special pliers with insulated handles are required. On these handles, the maximum voltage that the insulation can withstand must be indicated without fail. In most household tools, this value is up to 1000V. If this characteristic is not indicated on the pliers, it is strictly forbidden to work with them in energized networks. This means that you are dealing with a bench tool and the manufacturer simply does not provide protection for the user from electric current.
There are many varieties of pliers, their type is selected individually, depending on the tasks.
Pliers - practical versatility
Since pliers are "relatives" of pliers, their purpose is similar. They are widely used for plumbing, electrical and other types of work. The working surface of the pliers has a recess with notches. It is designed to grip and securely hold round and smooth surfaces. As a rule, pliers have a combined surface of the jaws, i.e. in addition to a special recess for round parts, there is a part of a flat working area. And in some modifications there are two recesses for different diameters of the part.
Some models of pliers allow you to adjust the compression force of the jaws, for this there are several options for the location of the hinge in special grooves. The rearrangement process is quite simple, spread the handles and rearrange into the desired recess. In addition to the degree of compression, this also allows you to adjust the distance between the faces of the jaws, i.e. expands the size range of gripped parts.
In most cases, pliers are equipped with side cutters. They allow you to strip the insulation of the cores and cut the wire or cable cores. In addition, they may have special edges on front side sponges for cutting wire of hard grades of metal.
Some manufacturers expand the working area of the pliers by making notches on the handles just behind the swivel. This allows you to capture the part not only with sponges. How necessary and convenient we will leave it to the users' judgment ...
Pliers are also divided into electrical and locksmith. In the first, dielectric handles must be marked up to 1000V.
Pliers and pliers - the difference
It's time to sum it up. So what's the difference between pliers and pliers? Main three:
The shape of the working surface, for pliers it is flat, without a notch. Although there are combined types of tools with notches on the pliers. But this is more the exception than the rule. In addition, pliers are structurally designed for greater compression force. What does it mean? This means that the manufacturer selects the appropriate steel grade for pliers, which has greater strength;
The ability to adjust the gap of the working surface of the jaws and the degree of force of the tool is provided only for pliers (this is achieved by rearranging the hinge);
For pliers, the multifunctionality inherent in pliers is not typical, i.e. the presence of side cutters, special edges for cutting wire, as a rule, is not (again, these possibilities depend on the steel grade and hardening).
- If financial opportunities allow, buy professional pliers and pliers. This is not a whim, the difference between an amateur instrument and a professional one, even the leading trademarks, very significant. When choosing a power tool, you can save on professional equipment. It's not critical. And in manual very even. It's just a shame when, in the midst of work, you are suddenly left without pliers or after 10 bitten pieces of wire, it will be impossible to use side cutters. The joy of such acquisitions will soon disappear. What can not be said about a professional hand tool. If not a fake, then when used in everyday life, it will last a lifetime.
- Pay attention to the hinge, there should not be any backlash. The move should be soft and smooth. This is a sign of a quality instrument.
- With closed jaws of nippers or pliers, there should be no gaps, the surfaces should touch evenly, this is a guarantee of high-quality production and assembly.
- The handles on the handles must sit securely, free sliding, etc. is not allowed. Especially for power tools.
Pliers, pliers, pliers, wire cutters are representatives of a very diverse group of tools called pliers. Their main difference is in the shape of the working surface, determined by their purpose. These tools are actively used in various fields, they are used by dentists, blacksmiths, and railway workers. In particular, pincers are one of the most ancient tools; they are an integral attribute (along with the hammer) of the Greek god of fire - Hephaestus. Let's start with ticks.
Ticks
Usually it is a tool with relatively long handles and short jaws, which close over a short distance with flat or pointed surfaces. The pliers are intended primarily for gripping parts. Blacksmith tongs hold red-hot metal, they have long handles and various shape sponges.Railroad workers have tongs for carrying railway sleepers, as well as for carrying rails.
Tongs for carrying sleepers and rail (ROBEL)
Carpentry (carpentry) tongs pull out nails.
Joiner's (carpenter's) tongs (GEDORE)
Plumbing tongs (pipe) usually have a serrated recess for gripping pipes, inclined jaws and an adjustable hinge mechanism for clamping pipes of different diameters.
Sanitary pliers (STAYER)
Ticks include a number of electrical installation tools: these are crimping pliers for terminals, wire stripping pliers, connector pliers, cable gland pliers, current pliers, insulating pliers for replacing fuses, etc.
In general, almost any pliers can be called pincers, for example, pliers, in a simplified way, these are pincers with flat jaws.
Pliers are pliers that have a flat working surface, often with a fine notch. They are used to capture relatively small parts and perform various manipulations with them (bending, biting), often using two tools at once. For various works the shape of the sponges themselves may be different. There are pliers with elongated jaws (long nose pliers, platypuses) and pliers with curved jaws, used when working with parts that are in hard to reach places; pliers with narrow jaws (narrow-nose pliers) used for fine work; pliers with short jaws, providing a large gripping force at the ends of the jaws. Some pliers have pads on the working surface to prevent damage to parts. Often pliers have cutting edges for cutting wire.
Combination pliers, sometimes referred to as pliers, are a tool that includes pliers, has cutting edges for cutting wire and nails, a notch with teeth for gripping pipes, nuts and various cylindrical parts. This multi tool, on the one hand, able to help in various situations, on the other hand, special tools cope with specific tasks better. Therefore, combination pliers are a tool for a household tool kit, and not for a professional one.
pliers
Based on the French origin of the name of this tool - pinces-a-tige, pince - clamp and tige - rod, then pliers are a tool for gripping pipes and other cylindrical parts. That is, the main thing in pliers, which determines their name, is a notch with teeth.
Antique pliers with two notched notches,
for large and small diameters
Modern pliers, instead of several notches, have an adjustable hinge for pipes of different sizes.
Adjustable joint pliers (Task Force)
Apparently, pliers differ from plumbing pliers in a smaller size, or you can safely put an equal sign between them.
What many are accustomed to calling pliers, according to GOST 5547-93, are combined pliers. And it turns out that on the one hand, this tool can be defined as pliers with pliers, and on the other hand, pliers with pliers.
wire cutters
Nippers are pliers with a cutting working surface used for cutting wires, nails, fittings. Depending on the position of the cutting edges on the jaws, five main types of wire cutters are distinguished: side cutters (side cutters, diagonal cutters), end cutters (transverse cutters), cable cutters, stripping cutters (they are stripping pliers, see above) and end cutters. More often use side cutters, or side cutters.
When buying wire cutters, pay attention to what kind of material they are intended for biting, so cutters for copper wire may not cope with nails, and the cutting edges will be damaged.
Wire cutters for cutting cables, ropes, fittings, bolts have a special solid construction, increased hardness of the cutting edges, often several hinges to provide increased compressive strength.
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Perhaps it is impossible to imagine a more popular hand tool in everyday life and professional activities than pliers and pliers. The difference between them is quite significant. And although some people confuse these two types of instruments because of their appearance, however, the quality and even the standards of workmanship in both cases are not the same. The difference between pliers and pliers should be considered by all craftsmen when choosing them. There is a specific type of tool for everyone.
General concept of a pliers tool
To understand the differences between pliers and pliers, you should delve into their device. Both of these varieties belong to the class of pliers. This type of improvised means was used by ancient masters.
This class of tool includes various pliers, round-nose pliers, wire cutters, pliers, pincers. Each of these species has its own purpose. Pliers and pliers, the difference (photo below) between which every master must understand, have their own subspecies.
Basically, they differ in the size of the sponges, which makes it possible to use such improvised tools for work of any complexity. Each type of pliers is designed to perform a certain type of operation.
For electrical work, it is necessary to choose a special type of equipment. Its handles are insulated with a special material, which most often withstands a voltage of 1 kV. Plumbers and locksmiths can choose simple varieties of pliers and pliers.
Characteristics of pliers
The difference between pliers and pliers (the photo is presented to your attention below) is easier to understand by considering the characteristics of each of these improvised tools.
Special attention deserves their appearance and application in the work of masters. The length of the pliers is in the range from 12.5 to 20 cm.
Types of pliers
Considering such varieties of pliers as pliers and pliers, it will not be difficult to understand how they differ. In order not to confuse these two hand tools, their subspecies should be described. Pliers include several types of devices. They differ in working surface.
If the jaws are elongated, this will allow you to work in hard-to-reach places, to reach the necessary wires or parts. If they are not only elongated, but also curved, this is most likely a tool for electricians. Such devices are used in work when it is extremely difficult to reach the object. The bend radius can be 40 or 60 degrees.
Platypuses are similar to tweezers, only they have more compressive strength. Pliers and pliers, the difference between which in some respect affects the work of the master, may have different nozzles. This will allow you to skillfully handle fragile materials.
Characteristics of pliers
Pliers and pliers are the same type of tool and can be small, medium or large. Their scope is similar. They are used in plumbing, assembly, electrical, plumbing work, etc.
The surface of the jaws of the pliers has a notch. This allows you to hold round smooth parts. Most often, the surface in them is combined. There is a flat area, as well as recesses of different diameters.
Pliers and pliers, the difference between which lies not only in the shape of the surface of the jaws, also differ in capabilities. This increases the range of operations performed by the wizard.
Pliers allow you to adjust the compression force, as well as the distance between the surfaces of the jaws. Therefore, such a tool is suitable for parts of various diameters.
Additional features of pliers
Pliers and pliers, the difference between which lies in functionality, should be selected in accordance with the type of activity of the master. The electrician and plumber must select the appropriate type of hand tool.
Based on the needs of a specialist who uses pliers, the latter may have different additional features. Many manufacturers supply their products with side cutters. This device allows you to strip the insulation from the cable, cut the wire.
Sometimes there is a special edge on the front side of the pliers that allows you to cut very strong wire.
In other cases, the working area of the pliers extends beyond the swivel. On the handles of such models there are serifs that allow you to hold the workpiece not only with sponges. Not every master is comfortable with this, but it depends on personal preferences.
Characteristic differences
Pliers and pliers have a lot of similarities. What is the difference between these two similar tools should be considered in more detail.
The very first thing that can be noted when studying these products is the difference in the shape of the sponges. Inner surface their pliers have recesses to hold parts round shape. Pliers also have a flat surface with notches for better grip on the surface of the part.
The pliers have the same width of the jaws along the entire length. Pliers can have different lengths and widths. The choice depends on the purpose of the tool.
Main differences
Pliers and pliers small, medium or large have three main differences.
- Sponge surface shape. For pliers, it is even, and for pliers - with a notch. In the second case, the tool is designed for more durable types steel at work.
- Possibility of adjustment. It is possible to select the required gap of the working surface and the compression force only in the case of pliers. Therefore, this feature should be taken into account when choosing improvised means.
- Versatility and additional functions (side cutter, special edges) are inherent only to pliers. However, in the case of simple work, for ease of operation, you must opt for ordinary pliers.
How to choose a tool
Pliers and pliers, the difference between which determines the scope of their application, it is better to choose professional ones. These are the most durable products that will serve their owner for many years. Cheap models sometimes quickly lose their functionality or even fail. Therefore, when choosing a tool, it is better not to save.
A quality product can be identified by looking at the hinge department. There should be no backlashes, and the course of the handles must be smooth. When connecting the jaws, there should be no gaps, distortions. IN quality tool they close evenly.
It is extremely important, especially for electrical work, that the handles sit tightly on the base and do not fidget. This will allow you to work with improvised means safely, without fear of electric shock.
Having become acquainted with distinctive features such products as pliers and pliers, any master will understand their difference from each other. In accordance with the required type of work, hand tools are also selected. It differs in size, shape, additional features and functionality. Each specialist must take into account the features of a hand tool and purchase high-quality copies. This will guarantee a long service life of pliers and pliers of any configuration.
Pliers, pliers and pliers can be found in any home. At least once everyone had to use them at home or at work. They are used when working with different materials, during the repair of various electrical equipment and machinery. But despite the fact that they are widespread and often used, few people manage to call the tools by their proper names.
Types of pliers
From the name it is clear what the tool should look like - these are flat sponges that have transverse notches of varying degrees of frequency, swivel joint and handles. Monolithic parts, as a rule, are the working part and handles. This tool is indispensable in plumbing or electrical work, because thanks to them it is possible to hold a part of any shape, bend wire or metal in the right direction.
Pliers can replace a whole set of wrenches. However, it should be noted that these tasks are completely unusual for this tool, but if you do not have right size wrench, then pliers usually come to the rescue, which cope with screwing and unscrewing all kinds of bolts and nuts perfectly. Pliers are different size and shape of the working part:
- So, if you need to work in a hard-to-reach place, then invaluable help this will be pliers with elongated narrow jaws.
- Tools bent at a certain angle can even get a part from under a covered surface, for example, a screwed circuit board in electronics.
- "Duckbill" are called pliers, which have elongated sponges like tweezers.
- To carry out work with particularly delicate materials, special tools are used, as well as silicone nozzles that are worn on conventional models.
The tool differs in addition to the working part and handles. For example, dielectric pliers are applicable in electrical installations. On this type of instrument, it is imperative to look for the maximum voltage value that must be indicated. After all, this is an indicator of whether the material from which the handles are made can withstand it. Household models have this indicator up to 1000 V. If you do not find such a number on your tool, then it is strictly forbidden to use these pliers under stress. It is highly likely that this tool belongs to the plumbing business and is not intended for work with electrical equipment.
pliers
This name is taken from French, so for sure this product came to us from abroad, but so far it has not occurred to anyone to prove this. The main difference between this spongy tool and pliers is in notched notches, which are convenient when gripping smooth and rounded surfaces, for example, small-diameter pipes.
Pliers in their pure form are no longer available. You can often find a "mixture" with the same pliers, when the front working surface is flat, and side cutters and wire cutters are placed closer to the hinged part. Such "conveniences", as a rule, are not inherent in pliers. Some models are specially simplified by creating only not one, but two recesses of different diameters for work on capturing rounded surfaces. Other pliers are equipped with an adjustable hinge, which allows you to expand the grip.
Cousins of pliers
Do not forget about the round-nose pliers, which, unlike other similar tools, have sponges with a round section, tapering towards the ends. Imi easy to bend wire, making bends with different radii. The models of this tool are varied: round-nose pliers are produced with different sizes sponges, curved working surface, with and without notches. But in general, they remain similar to their older "brothers" - pliers with the same dielectric handles and wire cutters.
Some models of wire cutters resemble pincers. The exception is cutting edges that cut metal of different thicknesses, depending on their capabilities. Nippers, in turn, are divided into end and side. In everyday life, side samples have become the most popular. When choosing these products, you should consult about what types of metals they can bite.
After all, there are tools only for copper wire, but some can even master nails. Today there is reinforced models capable of breaking through a cable or reinforcement thanks to increased strength cutting edges and multiple hinges for more grip.
The difference between pliers and pliers
So, summing up all the above, we can conclude that The differences between these tools are as follows:
When it comes to buying a hand tool, it is better spare no expense. This in electrical mechanisms can be saved on a secondary function, for example, the fifth speed, or an additional nozzle, however, in the manufacture simple tools, if there is a possibility of saving, then only on the loss of quality. It follows from this that, if your possibilities allow, then it is better to purchase professional tools. The difference between ordinary and expensive products will be felt so much that you will quickly come to the conclusion that you should thank yourself for such "waste".
Rate with a glance closure strength of the working surface, only uniform contact is allowed. When compressing and unclenching, a smooth and soft stroke should be felt. Very reliable fixation should be at the handles, because low-quality products “suffer” from slipping, which is inappropriate when working with electricity.
So, we have analyzed the difference between these universal and irreplaceable tools that find application in various fields of human activity.
Pliers and pliers
