When working with wires for various purposes, it constantly becomes necessary to connect them to electronics or other household appliances. To perform this task, it is customary to use a special tool - pliers for crimping the lugs of a particular cable. This article will provide general information about this type of press, what types they are conditionally divided into and how to use them during installation or repair work.
Due to the fact that with the development of technology, new types of cable connections were invented for for various purposes, With different power and conductivity, their design also changed. In order to prepare the contacts of the leading wires, their lugs should be crimped in an appropriate way. The solution to this problem was the use of crimping pliers.
Very often they are used by radio amateurs, auto mechanics and electricians. Such a tool can be used to press the contacts of both conventional cables and specific connectors for non-standard connectors (network cable for a computer), various terminals. To date, crimping pliers are considered one of the most common tools for such work. It is cheap to produce, affordable and effective.
Its design allows you to effortlessly press the tips. The principle of the press is capable of reliably and efficiently crimping cables. As a result, there is a very strong connection between all conductors and the connecting structure itself. The cost of a crimping tool can usually be affected by several factors - the manufacturer, the type of construction, the quality and material of the final product.
Tool types
First of all, it should be noted that there are now many manufacturers of crimping pliers that make them to various standards. In the end, you should get a tool that can have a narrow purpose (pressing only a certain kind wires), and wider (universal pliers for household structures and production). For this reason, the consumer should immediately have an idea of what type of pressing tool he will need.
AT living conditions such a crimping tool may be suitable for working with stranded wires electrical network: sockets, switches, lighting, energy meters and more.
Pressing tongs provide a high-quality and safe electrical and mechanical connection. Usually, the division into types of a given instrument is made on the basis of them. Crimping pliers are classified as crimping equipment. They are often required to work with low current systems to secure contacts.
So the tool itself can be divided into several types depending on its purpose. For removing the sheath from the cable and its insulation. This type of pliers allows you to quickly and accurately cut off the required section of insulation on the wire without damaging the core itself. They can be adjusted to a specific diameter that should be removed from the core. The setting can be done manually or you can choose automatic.
With manual adjustment, there will still be a chance of damaging the wire itself, and automatic adjustment will allow you to remove the braid under the consequences for the cross section of the cord. Often this type is used when working with distribution and junction boxes. The cutting edge must always be sharp so that the cutting of the outer insulation is done in one step, without chewing the wire in the tool.
For end sleeve presses. For this type of ticks, there are also several types, depending on the shape of their nests and shape. Nests can have plastic flanges, as well as be made without them. Able to be trapezoidal or intended for square pressing. Those that have sockets with plastic flanges in their design allow you to effectively crimp the lugs of the stranded wire, and their square shape able to ensure reliable contact of all cores. With such tongs it is very convenient to do mounting or centering for any type of section. For a more reliable and accurate contact press, the pliers must be selected according to the appropriate diameter (there is a color marking for them).
For insulated tips cable. Working with insulated contacts should be carried out with an oval-shaped tool. Usually in their matrix should be located 3 standard forms for the press, which can be distinguished by the colors - red, blue and yellow. Accordingly, for each of these colors, a tip, sleeves and other connectors are produced with the same color indicator.
Applying while working with insulated wires such pliers, it is imperative to ensure that the position of the butt edge is correct. The butt edge is located in the middle of the upper profile of the tongs. This design is dictated by the fact that when it is placed sideways, the edge will be able to violate the reliability and tightness of fixing the cable itself.
For pressing non-insulated cable lugs. Used for non-insulated type of wire, as well as for open, made of brass. For the press in such pliers, a special rod is made. Therefore, the sleeve itself is crimped in the center, and the rod must be planted on the separation seam. Open end press pliers, which are made of brass, may have certain types clamps. One is for the wire and the other is for the insulation. In order for the press of open contacts to be reliable, it is worth attaching a locator to them. Such a device will ensure accurate positioning. If it is necessary to crimp the terminals, it is better to use suitable crimping pliers.
Video “Clamping and Insulation: Electrical Basics”
Principle of use
The principle of using pin press pliers in wiring can be understood from the workflow that will require their use. To work, you need a certain wire, the crimping tool itself and the connecting element itself, which should be placed at the end of the contacts. First of all, the outer insulation must be removed from the end of the wire. To do this, you need to use pliers. They should have a semicircular hollow, and on top of it cutting edge. You need to put the wire in this recess, then press the upper side with the blade. After making a couple of turns around the cable, the insulation will be cut. Now it can be removed without effort. For the correct press with reliable contact, it will be enough to strip 4 centimeters of the cord.
The next step is to align and place all the strands in desired sequence, as required by a certain type of connector. When the wires are straightened, they should be pressed tightly together and cut off, leaving 1-1.5 cm of contacts for connection. Then all the contacts must be placed in the connecting device itself, while maintaining their sequence. The vein establishment must be made to such a depth that the lower notch of the connector reaches the cable insulation. This is necessary in order not to damage it during crimping, since the notch itself is pressed very tightly, fixing the device on the cord.
After that in seat ticks should be placed device. Be sure to check the consistency of the colors of all cores. When they are in correct position, then compression can be performed. Final stage requires checking the connection for strength, as well as whether the connector itself is intact. Since there are a large number of working tools for such purposes, you can choose exactly those that are best suited for a particular type of connection.
For creating mechanical connections wires with lugs and cables use special tools. Depending on the material and its cross section, tools are used for crimping tips, which come in several types. They allow you to provide maximum area contact and uniform pressing of the cable core and shank.
general information
During connection various kinds technical devices and electronics have to work with wires. For such a procedure, a special tool is most often used - crimping pliers for tips. They are selected depending on the type of wire. Now appeared various types new cables. They differ from each other:
- power parameters;
- conductivity.
To prepare the contact of the leading wires it is necessary to correctly crimp the connecting ends. For this purpose, press tongs are usually used as crimps for lugs. electric cable. Most often with this special tool electricians, radio amateurs and auto mechanics work.
This type of tool can be used for simple cables. It is also used in the processing of unusual non-standard connectors, for example, a network cable for a computer.
Due to its characteristics, ferrule crimping pliers have become a very popular tool. It's inexpensive and effective remedy for work.
The simple design of the equipment makes it possible to easily and quickly perform the pressing of the tips. The principle of the press tongs device allows you to quickly and efficiently crimp the cable. This helps to carry out the highest quality connection between the connecting structure and the rest of the conductors. The price of an electrical installation tool will depend on the manufacturer, quality, material used and type of device.
Tool types
Now many manufacturers produce crimping equipment. The finished tool must have a narrow direction for pressing a certain type of wire. They also produce pliers of a universal type, designed for production and domestic needs.
At home crimping Tools should be as suitable as possible for operations with stranded wires in the mains. It is used with:
- switches;
- sockets;
- energy saving meters;
- various lighting fixtures.
A high-quality, reliable and safe connection of an electrical and mechanical nature can be provided by properly selected electrical installation tools for crimping wire lugs. This type of tool is a pressing type of equipment. Most often, crimping pliers for crimping wire lugs are used when it is necessary to secure a contact in low current systems. Depending on the purpose, such equipment is divided into several types:
- press tongs;
- hydraulic hand press;
- mechanical press;
- electromechanical press.
Crimping can be done mechanically or hand tools. It is made by indentation, solid or combined compression. In the inner part of the press, on one side, there is a working piston with a cuff. With the help of a built-in spring, it returns to its previous position. On the other side there is a plunger and a pressure cylinder.
Excess pressure is built up in the cylinder itself, after which oil enters it. It moves the working piston and it acts on the matrix, creating required pressure in the tip area. This design is equipped with a two-way plunger.
The working cylinder will be open when, at idle, the circuit quickly creates fluid injection in it. Another circuit opens slightly, developing maximum effort at the very end idle move. When the support valve is closed, the return spring connected by the oil bottle and the working cavity brings the piston to its previous position.
The crimping press is also equipped safety valve. At elevated level pressure in the system, excess oil is returned back to the oil bottle.
Principle of operation
Pressing tongs allow you to accurately and quickly remove the desired length of insulation on the wiring without damaging the core itself. They are adjusted to the required diameter manually or automatically.
During manual tuning there is a possibility of damage to the wiring. If you do it in automatic mode, then when removing the braid, the cross section of the cord does not touch. This type of equipment is most often used in working with lighting and distribution boxes.
To cut in one step, the cutting edge must always be sharp. This will allow you to qualitatively remove the outer insulation of the wire.
First you need to remove the outer insulation at the ends of the connected wires. In a cleaned form, they are threaded into a sleeve. Its diameter can be different, it depends on the sum of the sections. The sleeve itself must be suitable metal. After that, press tongs are used for crimping.
The sleeve must be insulated insulating material or heat shrink tubing. This procedure is quite simple if used correctly. suitable tool. The hand model must be compressed with sufficient force to make a quality crimp.
Criterias of choice
There are several important characteristics to consider when choosing this type of equipment. Great importance has a compression range. It indicates the minimum and maximum cross-section of the cable, which can be compressed with manual press tongs.
For cables with a small cross section, a tool with a range of 0.5-6 mm2 is quite suitable. For thicker cables, it is better to choose equipment with parameters of 10-20 mm2.
Pay attention to the insulation of the tool handles. Usually they are made of plastic, however, some models of crimpers began to be covered with special rubberized inserts. Such material does not conduct electricity, which is always important handmade with cables. If the wire is energized, then it is not dangerous for a working person.
Crimp kit arrived. Crimps auto-terminals on wires from 0.5 mm² to 6 squares and all that are crimped according to the same principle; insulated terminals three colors-sizes and limit switches NShVI (NShVI2).
Who cares what happens if you mix point 18, several dozen correctly and incorrectly crimped terminals and a lot of time, read on.
Package
The pliers come in a regular gray bag without bubbles. They are not needed, the contents of the parcel can be destroyed only purposefully, it is simply difficult to damage it using the methods of our mail.There is no factory packaging, such as a blister or a box, the postal package has long been lost and there is no point in photographing it. Will go for a gift. And in general, I do not like unboxing reviews.
Appearance
Rectangular bag made of thick fabric, the shape is apparently given by two pieces of cardboard inside. Dimensions 28 * 14 * 4 cm. A little less than a sheet of A4 paper. Has a carry tail. Zipper on the outside on three sides of the bag.
Let's see what's inside.
Interior
Inside are the press tongs themselves, a screwdriver, interchangeable dies and spare screws.The first smaller (0.5-1.5mm²) die for crimping the auto-clamps is already installed in the pressing tongs.
The screwdriver is stored under the rubber bands on the side wall of the bag.
The screwdriver is double-sided, on one side there is a cross size PH1 for adjusting the ratchet actuation force. On the other side is a 3mm hexagon for changing dies. The screwdriver is not magnetic, the rod is fixed in the handle with a spring-loaded ball. 
Three more matrices are in the pockets of the bag. There are also 4 spare screws for changing dies.
Hex socket head screws, regular M4 thread, no problem to replace. 
The pockets close with Velcro. Life hack - you can put all the matrices and screws in one pocket - they fit perfectly - and take the other three with bags with terminals different type. Or matrix + terminals for this matrix in this pocket. I will probably do so.
The bag is universal, it has two more free places. One place is for the stripping pliers, the second is for the MC4 solar panel connector keys.
For example, such a lot
Ticks
The pliers are made of metal plates about 2 mm thick.
Plastic handles with rubber inserts. The handles do not stagger, it was not possible to remove them with the usual effort - the handles are latched into the latches. They won't slip, they won't need to be glued. The metal base goes to the end of the plastic handle - the magnet sticks to the end of the handles too.
The rubber inserts are marked ++++, I thought that the second handle would have a ---- sign, but both have ++ marked.
Pincers are assembled on rivets and pins. Inside you can see two springs, one small for the ratchet triggering mechanism, the second, large, the main one is covered with a lid.
The pliers have a gear wheel fixed with a screw. By turning this gear wheel, you can adjust the final position of compression of the dies. That is, you can make the ratchet open when the matrices do not fully converge.
The screw on the ratchet can be unscrewed with the cross end of the supplied screwdriver.
There is also a lever near the ratchet, by pulling which you can interrupt the crimping process and open the jaws of the dies.
matrices
The width of all matrices for these pliers at the point of attachment with screws is 4 mm.
First Matrix JX 1601-08
crimps auto-terminals from 0.5 mm² to 1.5 mm². The width of the first die at the crimp point is 7 mm.
There is a step inside the matrix, so this matrix compresses the terminals in one pass - both insulation and conductors at once.
We take the most common auto-terminal, insert it into the matrix and fix it with one click of the ratchet.
The stripped wire is inserted into the terminal and crimped with one push before the ratchet engages.
The wire must be stripped so that the cores are crimped in that part of the terminal where the cores are crimped, and the narrower and longer whiskers crimp the insulation.
Well, the process of crimping in GIF. Full video at the end.
Crimp result terminal 6.3mm wire 1.5mm², die space 1.5
I tried to crimp other terminals, the wire must be selected for a specific terminal.
On the right are well crimped terminals, on the left are terminals for which the wire is too thick.
Terminals and wire must be selected, you cannot just take a terminal designed for 1.5 mm² wire and crimp 0.75 mm² wire in it. It is necessary to either fold the wire twice or select a terminal with a smaller crimp mustache. Otherwise the wire is not held properly. Similarly, with a large wire size, when crimping a 2.5 mm² wire in a terminal for 1.5 mm², in whatever matrix it is crimped, the wire will be crimped poorly and the edges of the antennae will not wrap back into the cores and insulation, they simply will not be long enough. You can see for example such a lot -
it has six kinds of ring bare terminals under different diameters wires, including under this matrix. In the picture, a wire with a cross section of 0.3-1 mm² can be crimped into the terminal on the left, and 8-10 mm² into the terminal on the right, and the terminals are, as it were, the same size.
Terminal and wire sizes
About the same with flat auto terminals. For example lot
Identical terminals under different sizes wires.
It is difficult to find a seller with a wire size chart. Even this seller does not have a description for all terminals which wire can be crimped. We have to determine the diameter of the wire empirically. By the way, I recommend the seller, it comes from him quickly.
And an interesting reference to how the crimped terminal should look right and what errors are possible during crimping. Everything is in English, but with pictures everything is clear even without knowing the language.
Second matrix JX2546 crimps wires from 2.5 mm² to 6 mm². 
The width of the die at the crimp is 6 mm, a thinner die can put more pressure on a thicker wire. 
there is no step in it and you need to crimp it in two passes - first the cores then the insulation. 
The terminal is also inserted into the matrix, fixed with a ratchet, a wire is inserted and the wires are crimped. 
Then the terminal is inserted into a larger size and the insulation is crimped. In the photo, the ring terminal with a 2.5 mm² wire is crimped in the 4mm position - core and in the 6mm position - insulation. So the place of crimping in tongs must be selected for a specific wire section and terminal. 
Similarly, the 9.6mm terminal is crimped onto a 6 mm² wire - the cores are in the 6 mm position and the insulation in the same position is not clicked. The insulation would need to be crimped in position 8 or 10 if it was, but since the matrix presses a maximum of 6, it is necessary to crimp the insulation in position 6. 
Well, GIF crimping. 
Third matrix crimps insulated terminals in three colors. 
The color of the position in the matrix indicates the maximum wire diameter that can be crimped. Blue is the largest, red is smaller and yellow is the smallest. We take the red insulated ring terminal NKI 1.25-3 and crimp it onto a 2.5 mm² wire. 
If the wire does not completely fill the hole in the terminal, it will need to be crimped in a different color position. 
Well, the crimping process in GIF as usual 
Fourth matrix JX1601-06 crimps NSHVI tips from 0.25 to 6 squares. 
Compresses like a trapezoid. 
NShVI tips are designed to make stranded wire rigid, for example, in order to insert a stranded wire into the terminal block.
AT different countries different standards for the color designation of the wire section for the NShVI tip. For example, here is a table of colors and wire sections that are customary to use with us.
According to this table, lugs with a section of 6 mm² have a length of 12 or 18 mm, a matrix width of 12 mm - that is, the width is enough to crimp the lugs most commonly used in length. Elongated ones are rare. 
It is easy to crimp - we select the tip so that it fits snugly on the wire cores and press in the place with the corresponding designation in the matrix, we didn’t have to select anything here. Crimped several tips, the result is visible in the photo. 
Animated picture of crimping NShVI 
Video version of the review of ticks:
Pros:
- Enough universal set, which can crimp the most common stranded wire terminals.
- Carrying storage bag, there are two empty places under the elastic bands and a place without elastic bands - you can store a supply of terminals inside the bag.
- The price of the set, it is possible to buy the same set with an insulation stripper a little more expensive than this.
- Spare screws are not in vain included in the kit, while writing a review, I changed the matrix 10-15 times, tore off one screw, the thread in the tongs is intact.
The product was provided for writing a review by the store. The review is published in accordance with clause 18 of the Site Rules.
I plan to buy +60 Add to favorites Liked the review +60 +97When crimping conductors, one of the main conditions for obtaining high-quality contact and its reliable operation in the future is the use of professional tool. One of these tools are press tongs or crimpers designed for crimping sleeve, insulated, non-insulated ferrules and automotive terminals.
Crimpers for automotive terminals and insulated lugs must have dies with a double-circuit crimping profile - along the core and along the insulation. Also, its geometry and shape must match the crimp part of the ferrule. 
As a rule, it is best to buy sets at once, where the pliers themselves and all the necessary matrices are included.
Among domestic manufacturers stands out the company KBT and its two sets for crimping:
Consider their configuration, differences and principles of operation. Both of these sets are designed to crimp both insulated and non-insulated ferrules.
Press tongs CTB
The CTB set includes:
- press pliers themselves
- five numbered matrices
- plastic case
Press tongs have a mechanism for quick removal and replacement of dies. 
Keep in mind that any matrix, like any part, has a run-in property. And during the first few dozen crimp cycles, it is quite possible that the tip may bite.
Sometimes the jam is such that the matrix jumps out of its quick-release mechanism. This does not at all mean a poor-quality tool, and over time, after running in, you will forget about such an inconvenience.
Actually, quick-detachable matrices are of course positive moment, but in practice there is really a lack of some mechanism for their rigid fixation. And the longer you operate the crimper, the more this mechanism is weakened.
Press tongs CTB are made of high quality steel. Equipped with a ratchet mechanism that provides a full cycle of crimping. There is also an asterisk with which you can adjust the clamping force. 
In the upper part there is a lever that allows you to unlock the tool from any position.
If you choose the wrong die size and start crimping, the press tongs may not reach the very end, thereby locking the handles in an intermediate position. Here, just the same, you will need an unlock lever.
The handles are elongated, so that it is convenient to crimp with two hands. For relatively large sections and large volume work is very helpful. 
Compared to other manufacturers, a small angle of opening of KBT crimper handles plays a significant role. For other models, in order to perform a girth, sometimes you need to have not hands, but large paws. A small angle of wiring allows you to use the tool with much greater convenience and comfort. 
Matrices for press tongs
Why do we need as many as 5 sets of matrices? There is not only a difference in the cross section of the crimped lugs, but also in their functionality and size. 
For each type of tips, you can choose your ideal option.
In the CTB press tongs, as in the CTF, the dies are interchangeable, which makes these sets absolutely compatible and can significantly save your budget.
Most often, you have to use dies designed for crimping insulated and non-insulated sleeve lugs of the NShVI and NShV brands. The matrix is digitally marked along the cross section of the tip. 
These dies are specially designed to form a solid pin at the end of a stranded strand. 
To give mechanical strength, a special corrugation is applied on the inner surface of the crimping profile. 
The MPK-02 model matrix fits the most popular series ferrules section from 0.25 to 6mm2. 
And what to do if you have a sleeve end with a cross section of as much as 25mm2? Here you will be rescued by the matrix of the MPK-03 model. This die already crimps insulated and non-insulated ferrules from 10 to 25mm2. 
For crimping double end sleeves of the NShVI-2 brand, you need to use the MPK-06 matrix. It has 7 positions and crimps ferrules from 0.5 to 6mm2. 
Keep in mind that it does not come with the tool and you will have to buy it separately. You can get acquainted with the current prices and choose a set of matrices for yourself.
There is another way out of the situation. If you need to crimp the double tip of NShVI-2, and there is no way to buy a matrix for it, use the ordinary MPK-02 matrix.
The only condition is that you need to crimp such a NShVI-2 with a connector one size larger.
That is, when you have a double tip with a section of 4mm2 NShVI (2) -4-12, then you need to press it with a matrix designed for a single one under 6mm2. 
The set also includes an MPK-01 matrix for insulated connectors of the brand NKI, NVI and the like. It is designed for sections from 0.5 to 6 mm2. 
Well, the last two sets of matrices are MPK-04 - for auto-terminals and MPK-05 - for bare copper tips. 
The dies are inserted into the pliers in such a way that the side of the die with the smallest section of the crimping profile is always located at the edge of the jaws.
Sleeve tips NShVI this crimper compresses with a trapezoid. Such a crimp profile is quite wide and may cause some connection problems with individual equipment. Keep in mind that when connecting wires to starters of the second magnitude, after crimping wires of relatively large sections with a trapezoid, sometimes you have to put them into contacts sideways. 
Press tongs set CTF
This set also includes 5 matrices. True, there is no longer a quick release mechanism.
To replace the matrix, you will have to use a hex key. Which is not very convenient and can take much longer than the compression process itself. 
Of course, you can do amateur activities and somewhat modernize the process of removing matrices. To do this, nuts can be soldered onto the factory screws, which are already easy to twist by hand without the use of hexagons and special keys. 
Also included are 2 spare screws from the dies in case you lose the current one or ruin the threads on them.
The lack of a quick release mechanism is of course one of the main disadvantages of this tool. Imagine you are sitting in front of a closet, in which there are a couple of hundred conductors. All of them go in order, of different sections and sizes, and they need to be crimped accordingly. How much extra time and nerves it will take you to unscrew and twist the matrices, the question is far from rhetorical.
When inserting dies into CTF pliers, in order not to be mistaken, look at the size of the crimping slot. big size insert in the direction of the handles, with a smaller one - in the groan of the nose of the tool. The vertical positioning of the matrices also plays a role. 
A reasonable question arises, why do we need a CTF set with an inconvenient process for replacing dies, if there is a CTB press tongs with a quick release mechanism?
The fundamental difference of CTF is the parallel closure of matrices. This form of crimping is the most important advantage over any other pressing tongs.
When using conventional press tongs, the crimping of insulated and non-insulated ferrules first occurs from one edge, then in the center, and only at the end the ferrule is crimped in its entirety.
But the CTF model has such a design that the jaws on it close in parallel from top to bottom. Therefore, crimping occurs evenly and immediately over the entire surface of the tip. 
Parallel clamping of the dies provides a higher quality connection.
True, it is possible that you have chosen the matrix and the tip, it seems to be correct, and the wire after crimping is still poorly clamped inside the sleeve. How is this possible?
And the reason here lies in an unscrupulous cable manufacturer. It is they who can make the wire, relying on their specifications, and not on GOST. As a result, the cross section is not 1.5 mm2, but less than 1.25-1.3 mm2. You, however, clamping it all with a 1.5mm2 matrix, naturally cannot achieve the result you need. 
On new pliers, nothing needs to be adjusted. The factory settings are set optimal conditions crimping. However, during long-term operation, the matrices can become loose and play and slack appear.
Adjustment is carried out using an eccentric. Unscrew the stopper screw and turn the sprocket. To the plus side, if you need to increase the convergence of the matrices and to the minus side, if, on the contrary, to weaken.
The KBT manufacturer for its crimpers claims a warranty of 30,000 lugs crimping without loss of crimping quality. 
Also ctf pliers have:
- unlocking mechanism from any position
- handle lock button
By the way, the handles here are no longer elongated and it’s no longer possible to comfortably grab them with both hands.
Why do you need to fix the handles? Imagine that you are standing on a stepladder and, under the ceiling, crimp the tip sleeve in the junction box with one hand. You need to put it on the wire, put it in the right slot of the matrix and fix it before finally pressing it.
It will be problematic to do this in one go due to the uncomfortable position and cramped working conditions. Here, just the same, the fixing mechanism is indispensable. They inserted the sleeve, tightened it, intercepted it and squeezed it properly. 
It is not recommended to crimp solid wires with CTB and CTF press pliers. To do this, you need to apply more effort and the ratchet mechanism must be designed for this. In this case, it is better to use other brands of tools from KBT. For example, a crimper - PK-16u and PK-35u. 
In general, both sets of CTB and CTF can complement each other and be indispensable assistants when crimping sleeve insulated, non-insulated and other types of thin-walled sleeves and tips.
Of course, it is quite enough for the master of the station wagon to have one of them. However, remember that versatility doesn't always pay off. It is much more reliable to have a set of exactly tongs, and not a set of matrices for one press tongs.
Sets of press tongs CTF and CTB in online stores can be purchased within 5000 rubles.
The pliers themselves with only one matrix will cost at least two times cheaper. Choose for yourself required option can .
Professional handpiece pressing pliers are presented in the form of a mechanical tool that allows you to ensure a reliable connection of two elements. Outwardly, their design most of all resembles ordinary pliers, but instead of even sponges, specific relief matrices are used. Them functionality calculated under different forms and crimp diameters.
Short description
Long term operation electrical networks largely depends on how well all the connections between the conductors were made. That is why crimping products are widely used, with which you can achieve the most reliable connections non-detachable type. During this procedure, the cores of the prepared wires are carefully compressed in special sleeves made of aluminum or copper. In order for the result to be of high quality, the master must apply a large compressive force provided by crimping tongs.
Such a tool is often called a crimper, since many manufacturers equip the unit with interchangeable dies with profiles that are combined with both conductors and insulation. On sale you can find quite large sets of such devices, where each master will find everything necessary for high-quality work.
Most often, modern professionals use a mechanically driven crimping tool. Such units are equally effective in both industrial and domestic industries. Of course, if necessary, more powerful pressing tongs can be purchased, where the main work is performed by a hydraulic drive. They can be used to process cables with large diameter and cross-sectional area from 120 mm².
Universal press pliers for crimping sleeves and tips consist of two basic parts:
- The fixed element is a matrix, which is presented in the form of a curly bracket, providing the necessary deformation of the material.
- The moving part is a specific punch, without which high-quality extrusion on the sleeve cannot occur.
Matrices are selected in strict accordance with the diameter of the tip. Depending on the model used, all settings are made via fine adjustment or replacement of the part itself. Standard domestic installation of such a tool is made in the form of non-removable curly sponges, which are designed for quick crimping of different-sized cartridge cases.
AT removable models ticks, it is the correct choice of the working area, which necessarily includes a matrix, as well as a punch, that is of great importance. If the master made some mistake, then the final connection will turn out to be extremely low, and normal contact will simply be unavailable. In addition, the compressive force must also be able to measure. After all, excessive pressure will tear the sleeve, which will make it unsuitable for further operation. But a weak crimp, on the contrary, will not be able to provide high-quality contact, the final contact will be extremely unreliable.
It is worth noting that in recent times craftsmen actively use manual pressing tongs of the PK-16 brand, which are manufactured by the KBT company. The thing is that such devices have the simplest design, a high degree of endurance, and they are also very convenient to use. The tool completely lacks unnecessary auxiliary functions, due to which it is included in the list of the most popular budget options.
Applications
Crimping pliers are actively used by both beginners and more experienced radio amateurs, as well as electricians and auto mechanics. Such units are simply indispensable in situations where you need to process the contacts of standard cables and professional connectors with an unusual connector (this category includes a network cable for a PC).
Light and simple design such crimpers gives each master the opportunity to complete the task as quickly and efficiently as possible. The device is guaranteed to provide reliable and tight crimping of the workpiece, due to which the highest degree of contact between the connecting element and the conductor is achieved. The price of the unit directly depends on the manufacturer, the type of design and quality.
It is worth noting that crimping pliers do an excellent job of crimping insulated wires:
- NShKI - pin round tips.
- GSI - connecting sleeves.
- NCI - ring type tips.
- RPI-P, RSHI-P, RPI-M, RSHI-M - flat and plug connectors.
- OV - piercing type couplers.
Crimping units are actively used for flexible conductors of wires in the process of connecting circuit breakers, chandeliers, sockets and lamps. Professional crimping of connector sleeves in the industrial sector is carried out using universal pliers hydraulic type. Such units are designed for cable cores with a cross section of 16 to 240 square meters. mm.
Design differences
Universal pressing tongs are designed to work with sleeves and tips, the cross section of which can vary over a wide range. In the domestic and industrial sectors, the most common are parts with an indicator from 1.5 to 16 mm². The special design allows you to precisely press the metal of the tip (sleeve) into conductive wires conductor. The final result depends on the required depth and application profile.
Some models are equipped with a ratchet mechanism, due to which the handle of the unit is in a compressed state until the crimp is completed. At the final stage, the pawl is triggered and the inverter mode is turned off. In such a situation, the master simply will not be able to squeeze the handle, since the tool's jaws are not fully open. In addition, the unit can be equipped with a side swivel wheel that disables the lock if necessary.
Each tool jaw is equipped with working areas with a variety of profiles. Such technical solution allows craftsmen to crimp any type of lugs and sleeves with a standard section. For more comfortable work, each zone is marked with its own number or a special stamp, due to which errors associated with the wrong choice of size are prevented.
PK-16 products do not differ at all from their counterparts in any way. design features. But the presence of longer handles allows you to comfortably work for a long period of time without making much effort.
If the master decides to use the production area with numbers 1.5 and 6.0, then he will need a little onslaught of one hand to make the result as high quality as possible. But for zones 10 and 16 it is necessary to use the power of two hands. It is worth noting that if a specialist most often works with large tips and sleeves, then it is better for him to buy a more powerful and larger unit.
Varieties of pressing units
Many modern manufacturers engaged in the manufacture of crimping pliers based on various standards. The buyer can always buy available tool with a narrow scope (pressing a certain type of cable) or universal models. That is why even before buying it is necessary to determine what work the unit will perform.
Rules for using the tool
Despite the fact that many novice craftsmen consider crimping quite simple view work, but even in this case there are technical conditions on which the quality of this procedure depends. The correct choice of the unit is of great importance, since it must have an optimal compression force, which will be quite sufficient for the sleeve used.
Between those wires that are interconnected due to crimping, the most high-quality and reliable contact is created. In order for the result to meet all the requirements, certain rules must be followed:
Larger sleeves with a section of 10 or 16 mm² can only be crimped at certain intervals. Otherwise, frequent exposure to excessive loads can deform the tool, making it unsuitable for further use.
Main advantages
Many people think that crimping pliers are not needed at all to connect lugs and wires of a small cross section, because they can be replaced with ordinary pliers. Of course, such a way out of the situation is quite accessible, but to achieve such High Quality as with ticks it will no longer work. And all because the matrices of the tongs provide a too tight fit of the tip to the core, which prevents the penetration of water and air. Due to this, metal oxidation can be excluded, which is especially important when working with copper parts.
During the use of pliers, gaps are formed where dust, moisture and any debris can easily enter. The quality of the contact will be reduced several times, and this is fraught with an increase in current resistance. The cores receive too much clamping, which violates their cross section. Over time, some of them will thin out or simply fall off, which will reduce the conductivity of the signal.
