Device for crimping tips. Crimpers for crimping insulated and non-insulated terminals and lugs. We put the tip on the wire

For high-quality connections of various wires and cables with sources and consumers of electricity, metal crimp lugs and sleeves are used. Their fastening at the ends of wire products is carried out using a press tongs for crimping the tips.

Features of crimping pliers

The principle of operation of the tool is similar to the work of pliers. The difference between crimping pliers for ferrules is complex profile pressing jaws. Crimping pliers or crimpers have various sizes and the shape of the landing bed. Each type of tool is designed for crimping wires and cables with a certain cross section and number of cores.

Tools for crimping wire lugs and cable cores allow you to quickly and efficiently carry out switching connections between power units. The crimping process for cable lugs is quite simple. A sleeve is put on the bare end of the wire or stranded twist. She is led into the opening of ticks. With the force of the fingers, the levers of the tool are squeezed, and the crimper compresses the sleeve with the wire.

Main types of mites

Crimping pliers are divided into two types. The most common type is a design that works like pliers. That is, the sleeve is compressed on both sides. Other pliers are diaphragm crimpers.

pliant

The tip is crimped in the same way as pliers capture any part. Working surface matrices has cutouts into which the tip shank is threaded. This design is suitable for those fasteners that do not need special reliability.

To increase the crimping force, hydraulic ferrule crimping tools were invented. Thanks to this improvement, the pliers began to have greater application efficiency. The design uses cylinders with pistons filled with oil, which creates a large pressure of the dies on the tip sleeve.

Important! Some crimpers are equipped with several types of removable dies. The versatility of the tool eliminates the need for pliers for each size of conductor section.

The originality of the design of diaphragm crimps lies in the comprehensive coverage of the tip shank. The principle of operation is similar to the movement of the aperture blades of photographic lenses. The only drawback of such devices is the impossibility of inserting ticks into the connection of the two ends of the wires.

Note! A diaphragm tool is used as a press for metal tips of a pin or flat shape. The all-round clamp is much more effective than the pliers type of coverage of the wire products.

Application area

Crimping pliers for wire lugs of certain designs are used depending on the cross-sectional composition of cable products. The main areas of use of crimpers can be represented by the following list:

stranded wires and thin-walled lugs;
stranded wires and thick-walled lugs;
tips and electric cable large section;
sequential crimping of wires;
crimping computer cables.

Stranded wires and thin-walled lugs

Thin-walled lugs are used for wires of small cross section - from 0.5 to 3.5 mm2. Elements are marked NShVI. The abbreviation stands for:

H - tip;
Ш - pin;
B - sleeve;
And isolated.

NShVI tips are used for crimping copper stranded wires followed by insertion into the sockets of various electronic devices. The handles of the crimpers are compressed until the spring mechanism of the device is activated.

Note! Multi-stage matrices of clamps allow you to work simultaneously with wires with a cross section in the range indicated above. This eliminates the need for a large number of staple crimping hand tools.

Press tongs create a strong and reliable crimping of the tips. Without them, one would have to twist stranded cores or solder switchgear terminals. The use of pressed limit switches completely eliminates the problems associated with the breaking of thin veins, wire breaks, and the risk of a short circuit.

Stranded wires and thick-walled lugs

Thick-walled shanks are used for crimping multicore power cables. Their limiting section reaches 16 mm2. Press tongs PK-16 are used only for stranded wires. The tool can compress the sleeve so hard that it will easily break a single core.

The cable crimping process takes place in several stages:

At the end of the wire, mark the length of the sleeve.
Special wire cutters remove the insulation from the marked area.
Put on a piece of heat shrink tubing so that it does not go over the bare wire.
The cleaned end of the cable is inserted into the sleeve. The entry of the wire should be tight, but without effort.
Pincers crimp the tip.
Protruding veins bite.
The heat shrink tube is heated with a hair dryer until it tightly wraps around the cable.

If the letter “U” is indicated in the marking of the tool, then this means the location of the ratchet mechanism inside the handles, which creates a large force on the jaws of the crimper. Pliers PK-16-U are more easily compressed during cable crimping.

Lugs and heavy gauge electrical cable

Crimp for ferrules electric cable large section is produced by a manual hydraulic press. Initially, the valve of the device is ajar, and the stem slowly moves to its original position. At the beginning of the piston stroke, the valve opens completely, which ensures that the dies are compressed with great force.

In house equipment large cables are rare. Primarily hydraulic pliers used to install lugs on high-voltage cables for fixing them in shields industrial facilities. Crimping hydraulic pliers for overall ferrules are also used when laying and switching power cables in energy shields of entrances residential buildings, administrative buildings and civil buildings.

The hydraulic press is equipped with cassettes with interchangeable dies. The upper lever is equipped with a magnet, which, after compression, returns the handle to its original position. The levers are equipped with rubberized shells, which ensure the electrical safety of the device. Two cables are crimped with a double-sided sleeve during transfer electrical panel. These pliers for simultaneous crimping of two wires are also used when building copper conductors with a diameter of 6-12 mm2.

Consistent crimping of wires

This method is used when connecting pieces of wire into a single whole. This is especially important for sequential compression conductors with cores different metals. For example, when you need to make a bow of aluminum and copper wire, use a crimp sleeve.

The fact is that twisting from dissimilar metals will cause destructive processes from their direct contact with each other. The connecting sleeve becomes a kind of bridge between aluminum and copper.

Bare wires are inserted from both sides into the sleeve. After that, the sleeve is squeezed with tongs. The compressed sleeve does not allow air to enter the connection, which prevents the occurrence of oxidative processes in the metal of the wires.

Crimping computer cables

Often the question arises of crimping the Internet cable to connect it to a computer or combine several PCs local network. For this, a twisted pair cable is used. The wires are untwisted and distributed parallel to each other. At the same time, the strict color arrangement of the wires is observed.

RJ-45 plastic connectors are used as tips. Polymer tips are intended for insertion into the nests of hubs and network adapters. A twisted pair consists of eight wires. Interlaced in pairs, insulated cores minimize interference when electric currents pass through them.

Special crimpers are used to crimp the ends of cables. The RJ-45 connector is a plastic box with a hole for the cable on one side and contact terminals on the other side.

The process of installing connectors on network cables is as follows:

remove one centimeter of insulation, for this there is a special connector on the pliers;
twisted pairs are untwisted, aligned in a certain order;
wire cutters evenly cut the wires so that the bare ends of the wires are formed;
the wires are inserted into the RJ-45 connector, the cut wires with their cores should be tightly adjacent to the back side of the terminals;
the plastic connector is inserted into the opening of the pliers, then the tool handles are squeezed.

Twisted-pair wires should run from left to right in next order(view from above from the side of the entrance to the connector):

White-orange.
Orange.
Green-white.
Blue.
Blue white.
Green.
White-brown.
Brown.

How to work with crimping pliers

Self-mastery of crimping tongs may initially be accompanied by the creation of a poor-quality connection of the sleeve or tip with the wire. It often happens that a seemingly reliable crimp hides a bad contact. This can happen for two reasons.

If the shape of the terminals is not maintained

Mismatch between the size of the tip or sleeve with the opening between the jaws of the dies can cause a distortion of the squeezed element. Before proceeding with crimping, you should try on the tip to the opening in the tongs. It is also important that the bare end of the wire fits tightly into the holes of the shank or sleeve.

A bundle of wires or a single core should enter the connecting element with a slight stretch. If there are any doubts about the reliability of fastening, it is worth practicing on separate sections of the cable. After crimping by hand, you need to check the strength of the connection. At the slightest backlash, the crimp should be rejected and crimping should be resumed with another limit switch.

Excessive clamping can damage the strands inside the sleeve. The accompanying documentation of crimping pliers usually indicate the cross-sectional dimensions of the lugs directly for each opening of the pliers. Soft metal alloy connectors should be avoided. Over time, the tip may lose strength, and the contact will become unreliable.

Twisting stranded wires before crimping

The error can be made by the habit of twisting the strands, which is done before insulating or soldering hand connections. It is absolutely impossible to do so.

You can check the perniciousness of twisting in a simple way. It is worth squeezing the twisted stranded cables with pliers to make sure that the wires are deformed and damaged.

If, when removing the insulation from the installation section of the cable, twisted conductors are found, then they must be straightened. Only after that, the cores are inserted into the opening of the tip or sleeve.

Tip color coding

Color marking is used for NShVI tips. The color of the connector skirt corresponds to a certain wire section:

black - 1.5 mm2;
blue - 2.5 mm2;
gray - 4 mm2;
yellow - 6 mm2;
red - 10 mm2.

Table color coding tips NShVI

Crimping wires with pliers in terms of quality and speed of connections cannot be compared with manual twisting or soldering. For any connection, you can always choose desired model crimper.

Video

Crimping a wire cable is a very responsible task, especially if this connection is a power one. In this article, we will look at how to properly terminate the connection of low-current wires (up to 15–20 amperes).

Remember! The use of power wires and lugs of the wrong material and size can lead to serious consequences, such as a fire in the wiring, for example.

So, how to crimp the wires with lugs

In addition to selecting the necessary wires and lugs, this task will require special tool, which is called "crimper" or press tongs.

Outwardly, the tool is very reminiscent of pliers, at the ends of which a special matrix is installed, into which the tips and the non-insulated part of the cable are inserted.

This tool is designed to provide an even ferrule force around the wire, eliminating poor contact when crimping the cable. In addition, there are universal tools that allow not only crimping, but also cutting the cable, stripping it of insulation and twisting the core.

Special attention you should pay attention to the type of cable, in domestic conditions the power cable can be of two types:

with a monolithic core;
stranded.

When crimping a wire with a monolithic core, it is enough to remove the insulation layer with a small margin (up to 0.3–0.5 cm), (using a tool or using a knife to strip the insulation), then straighten and degrease the area to be worked on, after which you should put on on the heat-insulating tube.

Then, select on the tool (with a jumper in the matrix) a certain section and tip type. After carrying out the above manipulations, it is necessary to insert the prepared end of the wire into the tip, after making sure that there are no cracks in it.

Install the ratchet lock lever. Failure to comply with this paragraph threatens with poor-quality crimping of the tip and, accordingly, bad quality connections.

The final part of crimping a wire with a solid core with a tool:

make sure the connection is correct;
insert the tip all the way into the device so that the numbers with the matrix marking are knocked out on the front or back sides of the tip;
to the end we sink the bare section of the wire into the tip;
as soon as the operation is completed, the handles will automatically begin to return to their original position (for this, it is necessary to transfer the ratchet lock lever to the “locked” state);
the cord is terminated, the final step is to put on a heat-shrink braid at the junction and warm it up with a special hair dryer or a lighter.

If the handles do not return to their original position, then this problem may be caused due to the following problems:

too weak grip tool handles;
malfunction of the ratchet mechanism;
"weak" spring in the ratchet;
ratchet lock lever not fully installed.

If you have to terminate stranded wires, then the above method should not be used, as it has many nuances.

Therefore, the wires large quantity cores are crimped according to the following instructions:

After the above manipulations, the cable processing can be considered complete.

set the required section and tip type in the device matrix;
install the tip all the way into the device so that the numbers with the matrix marking are on the front or back sides of the tip;
we fill the straightened cable cores into the lug until it stops ( Attention! It is forbidden to twist the cable cores);
applying force, press the handles of the crimper;
the crimping of the stranded wire is completed, now we return the heat shrink that was previously put on the cord to the junction and warm it up building hair dryer, soldering iron or turbo lighter;
after performing the operation, the handles should return to the standard (unclenched position), if this did not happen, then the problems described above may be the reason for this.

How to crimp cable lugs without a tool

From the point of view of construction technology, crimping wires without an appropriate tool is prohibited, the only exception is rough installation to check the work performed.
However, for any domestic work with low-current consumers, work without a crimping tool is allowed.

There are several methods for terminating cords without tools:

Tip soldering

For soldering, of course, you do not need serious and expensive press tongs / crimpers, but the following “household” repair tools should be present in your arsenal:

Soldering iron (from 80 W) / blowtorch / gas burner.
Soldering kit (fluxes / rosin, solders of various types).
Heat shrink tubing and/or electrical tape.
Basic knowledge and skills of working with a soldering iron.

The algorithm of actions is as follows:

Crimping with core/hammer

This method has many disadvantages, the main of which is insufficient clamping, which can be fraught with heating of such a connection. However, it is often practiced, especially in cases where the connection will not work with high-current devices.

For this method, you will need a minimum of tools:

A hammer.
Kern (optional, but desirable).
Small file for metal.
Vise (optional, but desirable).
Conductive paste (highly desirable).
Electrical tape and/or heat shrink.

To end with these tools, we proceed as follows:

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. metal base goes to the end of the plastic handle - the magnet sticks to the end of the handles.

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 for different wire diameters, including 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 clamp is inserted into 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 there was one, 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.

Tips NShVI are designed to make a stranded wire rigid, for example, to insert a stranded wire into a 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.

Minuses

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.

All the best and good contacts in the right places!

The product was provided for writing a review by the store. The review is published in accordance with clause 18 of the Site Rules.

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Various household and not only appliances require connection to the electrical wiring available in the building. And often for this you have to carry out special preparation of wires. To make this task easier, experts often use such handy tool like crimping pliers. Not all home craftsmen are aware of this, so it will be useful for them to find out what this type of press is, what types it is, and how to handle it during repair and installation work.

general information

As man created new types of technology, new types of cable connections for various purposes, power and conductivity appeared. In order to connect the equipment in accordance with the current requirements and regulations, it is necessary to prepare the contacts of the leading conductors in a special way. To do this, you need to properly crimp their tips.. This is exactly what special crimping pliers were created for.

This is one of the indispensable tools that many radio amateurs, auto mechanics and electricians must have in their arsenal. With the help of such pliers, it is possible to crimp the contacts not only of ordinary cables, but also of specific connectors for non-standard connectors. Despite the fact that for last years range of tools for electrical work has significantly expanded, pliers for crimping tips are still one of the most popular tools for performing such an operation. This is largely facilitated by the low cost of their production, availability and high efficiency.

Such ticks have quite simple design, thanks to which it is possible, even without special electrical knowledge, to crimp the tips. Such a press is a very reliable device with which you can crimp cables quite well. This guarantees a strong connection between all the conductor mi and directly connecting structure.

To date, there are enough a large number of models crimping tool, which may differ not only functionality but also cost. The latter may depend on several factors:

press manufacturer;
construction type;
quality and material of the final product.

Tip Description

Most cable lugs are marked with four letters - NShVI. In the deciphered version, this abbreviation will sound like "insulated pin sleeve tip." To put it in a more understandable language, this is a common sleeve for a flexible stranded wire. Its main purpose- protection of the end of the cable, which is used for fastening in a screw clamp terminal. After removing the insulation, a lug is put on the end of the cable, and then it is crimped with a special device. Most often, press pliers are used for this.

The metal part of the tip is most often made of electrolytic copper. It has insulation only on the back side. The thickness of the insulator is noticeably greater than the diameter of the metal part of the tip. It looks like a cuff. The tip is attached to insulating coating wires. Its metal part is crimped, which fixes inside the cable core. When creating a connection between the handpiece and the screw clamp, the entire metal part is hidden in the socket of the device. Only the safe dielectric part of the cable is visible from the outside.

Tool types

If you go to any store that sells electrical products, you can be amazed at the wide variety of crimping pliers offered there. Such a wide range due, among other things, to the fact that each manufacturer uses its own standard in the manufacture. This explains why such tools can have different functionality.

For example, in stores you can find highly specialized pliers designed for crimping wires of only a certain type, and a wider-purpose tool with which you can crimp cables when connecting and repairing not only household appliances, but also production equipment. Every consumer should know about this and take this moment into account when he goes to buy a press for crimping tips.

With the help of crimping pliers, you can create a high-quality and safe connection of an electrical and mechanical nature. It is this feature that is one of the main features of the classification of the instrument in question. It should be said what is the crimping pliers represent a class of pressing equipment. In most cases, they are used when working with low current systems to ensure reliable fixation of contacts.

Crimping pliers can be classified into several types depending on the purpose.

For stripping the sheath and insulation of the cable

With the help of this type of pliers, you can quickly and fairly accurately cut off a certain section of the insulation on the wire, while maintaining the integrity of the core itself. Modern crimping pliers often have the ability to adjust to a certain diameter so that you can easily remove the insulation from the core without risk of damaging it. This setting can be done in two ways:

manually;
automatically.

When trying to manually select suitable diameter there is a risk of error and damage to the wire. Therefore, it is best to make such a setting automatically. Then you can be sure that the removal of the braid will be done without negative consequences to cut the cord. It is this type of preparation for crimping that is used when working with distribution and junction boxes. Particular attention must be paid to cutting edge which should be sharp. Then the outer insulation will be removed in one step without the risk of "chewing" the wire into the tool.

For end sleeve press

For this type of operation, several types of hydraulic presses are offered for sale, which may differ in the shape of their sockets and the shape of the tool. There are models in which the sockets are made with plastic flanges, but some can be made without them. They can have a trapezoidal shape or be designed for crimping square-shaped cores.

Pliers whose sockets are equipped with plastic flanges should be selected when stranded wire lugs are to be crimped. With this task, they will perfectly cope thanks to square shape, which can ensure reliable fixation of all cores. Pliers of this type are ideal for mounting, as well as centering cables of any type of section. If you need to perform a more accurate and reliable crimping of contacts, it is necessary to choose pliers with an emphasis on the diameter of the cable.

For insulated cable lugs

If the wiring has insulated contacts, then a hydraulic crimping press should be selected. cable lugs oval shape. According to the standard, their matrix has three forms for the press, each of which corresponds to specific color: red, blue and yellow. And for each of these colors, there is a tip, sleeves and other connectors for sale that are designed to be used with it.

About to crimp insulated wiring using a terminal press of this type, care must be taken to ensure that the joint edge is correctly positioned. It should be strictly in the middle of the upper profile of the pincers. Compliance with this condition is of great importance, since when placing the edge on the side, the reliability and tightness of fixing the electrical core will suffer.

Such pliers are designed to work with a cable without insulation, as well as open-type conductors made of brass. In the design of such a tool, a special rod is provided. Crimping is carried out strictly in the center, while the rod must be planted directly on the separation seam. A slightly different design has pliers for crimping open lugs made of brass.

They have two types of clamps, among which one is for wire, and the second is for insulation. To perform the most reliable crimping of open contacts, it is recommended to attach a locator to them . This is very convenient fixture , with which you can ensure the exact position of the contacts. If the task is to crimp the terminals, then it is best to do this with special tongs for pressing plugs.

Principle of use

Understand how crimping pliers work insulated tips wiring is not that hard. To do this, it is enough to know the nuances of the workflow itself, during which it may be necessary to use them. In addition to the wire whose contacts need to be crimped, you will need a crimping tool and a connecting element that is attached to the end of the contacts.

During the installation and repair of various home appliances often have to work with wires. And for their quality performance, often reliable and secure connections are required. It is impossible to solve such a problem without a specialized tool. Most often, crimping pliers are used for this. Today, such a tool is on sale in a wide range, so you can choose the most suitable option taking into account the task facing the specialist.

However, the choice of pliers for crimping cable lugs is not simple task as it might seem at first. Even though in stores you can find universal pliers to perform such work, it is still recommended to choose a highly specialized tool that can guarantee the highest quality crimping of contacts. Accordingly, the crimping of the tips itself must be performed by a specialist, since for the quality of such work, it is necessary to have experience and knowledge.

Crimping pliers for automotive and similar configuration terminals are indispensable when working with a car to perform electrical connections using connectors or such terminals. In the material, we will consider the features of the use of crimping pliers, their varieties and scope.

In the process of working with various cables there is a need to connect them to electronic and household appliances. For this purpose, crimping pliers are used to crimp the wire ends. various configurations and standard sizes.

Since in the course of the development of technology, new types of connecting wires for various purposes were developed, with varying degrees power and conductivity, the design of the cable connection was also subject to change. To prepare the contacts of the leading wires, their lugs must be suitably crimped with tongs.

Application of crimping pliers

Crimping pliers are widely used by radio amateurs, auto mechanics and electricians in the process. The use of pliers is indispensable for crimping the contacts of standard cables and specific connectors of a non-standard connector (for example, a network cable for a PC). Press tongs today standard size for crimping contacts are the best option for this task.

The design of the crimpers makes it possible to perform crimping easily and quickly, and the principle of operation ensures reliable and tight crimping. This ensures a strong connection between the conductors and the connecting element. The price of wire end pliers is determined by the manufacturer, type of construction, quality and material used.

Crimping pliers are designed for crimping insulated wires:

NCI tips of ring type;
tips NVI fork type;
pin round tips NShKI;
flat and plug connectors RPI-P, RPI-M, RSHI-P, RSHI-M;
piercing couplers OV
connecting sleeves GSI.

Sleeve crimping pliers are widely used for flexible wire strands in the process of connection circuit breakers, sockets, chandeliers and lamps.

Compression of connecting sleeves in the industry is carried out using hydraulic crimping tongs, which are designed for cable cores with a cross section of 16 to 240 sq. mm.

Further in the material we will tell you how to use manual and hydraulic crimping pliers, we will give the principles of their operation and application features. The pliers should be selected based on the cross section of the cable core.

The main types and varieties of ticks

Today, many manufacturers produce crimping pliers based on various standards. Buyers are offered pliers with a narrow scope (pressing a specific type of cable) or a wide purpose (universal production pliers). Therefore, before buying, you need to decide on the type of tool you need.

When used in everyday life, the tool can have a multi-profile purpose for crimping stranded wires of sockets, switches, chandeliers.

Pressing tongs create a strong and safe electrical and mechanical connection. Crimping pliers are classified as a type of crimping equipment, they are often required for fixing contacts in low current systems. Tools are divided into several varieties.

To strip wire insulation

With this tool, you can remove a section of insulation without damaging the core. Allowed manual and automatic setting of the required diameter, which is required to be removed from the core. In the case of manual diameter setting, there is a risk of damage to the wire, and automatic allows you to clearly remove the entire insulation layer. In most cases, this type is used for distribution and branch boxes. And you should pay attention to the sharpness of the cutting edge so that it does not chew the wire.

For press sleeves

Crimping pliers end sleeves differ in nests and their shape. The sockets may or may not be equipped with plastic flanges. The plastic ferrules provide maximum crimping efficiency, and the square configuration ensures that all strands are firmly in contact. This type device allows you to easily cope with mounting or centering for any type of cable cross-section. For extremely tight fixation of the contacts, the pliers are selected according to the diameter in accordance with the color marks.

For insulated wire lugs

Crimping pliers for insulated ferrules are characterized by an oval configuration. According to the standard, the matrix provides three standard forms for the press, which differ in colors - red, blue and yellow. Accordingly, tips, sleeves and other connectors with similar colors are provided for them. When working with the tool, it is necessary to monitor the correct location of the joint edge, it should be in the middle of the upper edge of the pliers. This design is provided in such a way that when it is located on the side, the edge violates the tightness of the cable or wire.

For crimping non-insulated cable lugs

Such press tongs for crimping are used on bare wire, and on brass wires. For the press, a special rod is provided in the tool, which must be placed on the separation seam. Crimping tools open cable from brass can be provided for separate clamps - one for the core, and the second for the winding. To strengthen the press, it is recommended to use a locator that will provide a clear positioning.

Twisted pair crimping pliers

Twisted pair crimping pliers are provided for 8 or 4 cores, used to insert wires into the connector. For example, twisted pair is used when connecting a cable for a high-speed Internet connection.

Crimping with hydraulic tool

Crimping pliers with a hydraulic mechanism are designed for crimping cables with large diameter over 120 sq. mm for industrial purposes. Hydraulic crimping tongs are similar to wire cutters or pliers, where lever-like handles actuate the crimping jaws to shape the plastic connector. The result is a tight, secure connection.

Due to the presence of a hydraulic mechanism, the force to actuate the tool is significantly reduced. It becomes possible to clamp the connector in several approaches, gradually increasing the force. Majority professional tools equipped with a hydraulic mechanism.

How to work with crimping pliers

Crimping pliers for ferrules and sleeves suggest that the principle of their use for pressing contacts in a cable can be easily understood from the workflow in practice. To complete the task, you will need a specific wire, clamps and a connecting component that needs to be placed at the end of the contacts. Let's bring step by step instructions and the rules for using press tongs to perform crimping:

remove the outer winding from the cable using pliers, on which there is a semicircular cavity on top, and a cutting edge on top;
put the cable in the recess and press the upper edge with the cutting side;
after several rotations around the wire, the insulation is cut along the entire circumference and can be easily removed;
for a correct connection with a reliable contact, a stripping of 4 cm is allowed;
align and arrange all the cores in the required sequence in accordance with the type of connector and the indicated color markings;
when all the wires are straightened, clamp them and cut them, leaving 1.5 cm of contacts for further connection;
put the pins in the connector, keeping their location. Twisting stranded conductors carried out strictly on the basis of the indicated colors according to the scheme. Insert the wires so that the lower notch of the connector touches the cable winding. This measure is necessary to minimize the risk of damage to the wire during the crimping process;
place the device in the pliers, after checking the correctness of the colors. After checking, perform pressing;
on the last stage check the security and reliability of fixation, as well as the integrity of the connector.

Press pliers are an indispensable tool for crimping twisted pair, crimping insulated lugs and cables without insulation. The tools are available in various sizes, with manual or hydraulic crimping for industrial applications and large diameter wires.