Modern electrical engineering is constantly being improved, including in the field of connecting wires and cables for various purposes, power and conductivity. The quality of the wiring largely depends on how well the leading wires and their contacts are prepared. They must be crimped in a certain way, and this task is completely solved by special pliers for crimping wire lugs. They are widely used among electricians. Using the tool, not only ordinary cables are crimped, but also various connectors used in non-standard connectors.
Application of crimping pliers
All pressing tongs, regardless of their size, are designed to perform two main tasks. In the first case, several wires are securely fixed to each other, and in the second case, current-carrying wires are prepared for their subsequent fastening in the terminals of various electrical devices.
First of all, crimping is required when connecting stranded wires. If they are inserted into the contact terminals unprepared, then gradually under the influence of microvibrations created electric shock, individual cores will be compacted. A free space is formed between them, and therefore the contact will become much weaker. For this reason, power wiring was previously always laid with single-core wires. However, after the press tongs appeared, this recommendation has lost its relevance.
The connection of cables of large cross-section by crimping has been used since ancient times, when household tools was not there yet. The quality of such operations was ensured by the use of special powerful presses capable of creating the necessary force. These devices operate on the principle of a jack, and many of them have a separate hydraulic drive. With the help of such presses, even the thickest cables are reliably connected.
The crimping method has proven itself well when connecting two or more wires. For this purpose, crimping pliers and wires are used. A special sleeve is put on their ends, assembled together, after which they are crimped. Depending on the type of connection, the wires are inserted from one or both sides of the sleeve. The first option allows you to get reliable twisting, and the second - high-quality.
The main types and varieties of ticks
Structurally, all crimping pliers - crimpers can be of two types. The former work as, and the latter are diaphragmatic. The first option is the most widely used. In this case, compression is performed only from two sides. The main difference from pliers are cutouts special form located in the lips. They act as guides and provide high-quality fastening of the tips on the wire core.
Such crimping pliers are considered universal to a certain extent, since they can grip the tips from all sides. The main disadvantage of such pliers is the presence on the sponges of only 3-4 cutouts under different sizes sleeves Therefore, during the work you have to use several tools. Most the best option the use of a universal crimper is considered, which includes interchangeable dies fixed on a special cassette. In order to crimp the wire, the most suitable tip is selected, and the unnecessary one is inserted into the cassette in its place and fixed.
Diaphragm pliers can be used to crimp four or six sides, depending on the design of the operating mechanism. Full wrapping on all sides allows for the tightest crimping of cable ends. During operation, the pliers are automatically adjusted to a specific sleeve diameter. The main disadvantage of such a tool is the possibility of crimping sleeves only on one side due to the closed head.
AT separate category it is possible to include crimpers designed for crimping computer cables. They work in the same way as double-jaw pliers, with the exception of the matrices themselves, which have a specific configuration for computer and telephone plugs. In this case, the essence of crimping is to shift the contacts that cut through the insulation of the wire and are tightly pressed against its cores.
Depending on the purpose, the entire crimping tool is divided into the following categories:
- Removal of insulation and sheath from wires and cables. With these pliers, a section of insulation is cut off without damaging the cores. They can be customized to desired diameter manually or automatically. It is essential to keep the cutting edge sharp so that the outer insulation can be cut in one stroke.
- Crimping end sleeves. The crimping tool has trapezoidal or square shape. They can be with or without flanges. In order for the clamping of contacts to be reliable and accurate, the pliers must be selected according to color coding, which corresponds to a certain diameter.
- Crimping pliers insulated tips. The tool has an oval shape, and in the matrix there are nests for the press in the amount of three. They are marked in red, blue and yellow. Sleeves, tips and other types of connectors with a similar color indication correspond to these colors. This marking performs the connection of insulated tips, placing them in the desired socket.
- Crimping bare lugs. The main working element is a special rod located along the separation seam and compressing the sleeve in the center.
Crimping with hydraulic tool
High-quality crimping significantly improves the current conductivity at the joints, prevents overheating and emergency situations due to poor contact. At home, for these purposes, ordinary household tongs are used, designed to work with wires with a cross section of up to 4 mm2.
For continuous or combined crimping of a cable with a cross section of 4-400 mm2, it is necessary to use more powerful tools that provide high operating pressure. This category includes hydraulic tongs or hydraulic presses.
The design uses cylinders of various diameters, interconnected and representing a system of communicating vessels. Each of them has a piston. The internal cavity of the cylinders is filled with water, oil or other suitable liquid, therefore such a tool is hydraulic.
In accordance with Pascal's law, the force acting on any point of a fluid at rest is evenly distributed throughout the volume. Thus, if a certain force is applied to a piston of a smaller diameter, then when transferred to a large piston, it will increase. The greater the difference between the areas of the pistons, the stronger will be the force that occurs on the large piston.
Each hydraulic tool of this type has a single, double or triple action. Equipment simple action equipped with one working body - a movable partition. In double or triple action presses, there are respectively two or three working bodies. Their work processes are coordinated with each other, and the overall control is carried out using special switchgear.
Structurally, the hydraulic press can be vertical or horizontal, closed or open type. With this tool, you can crimp not only metal, but also other materials.
When choosing a hydraulic tool, the presence of a pressure limiting valve must be taken into account. This element provides additional reliability, eliminating overloads due to pressure. You should pay attention to the types of pressing heads, which are open or closed, as well as the diameters of the working sections. All hydraulic tools consist of sub-groups, each of which performs operations with cables up to 70, 120-300 and 400 mm2.
How to work with crimping pliers
Each pliers are used in accordance with their intended use. However, there are general principles relating to any instrument. When performing each operation, you will need a wire or cable of a certain section, the pliers themselves, as well as sleeve tubes or other connecting elements.
For example, you can take the Internet wires.
- The ends of the wires are cleaned of external insulation. This operation will require pliers with a semicircular recess at the bottom and cutting edge above. A wire is placed in the recess, after which its upper side is pressed with a blade. 1-2 turns are made around the cable, the insulation becomes notched and removed without any effort. For normal crimping, you will need a cleaned area, 3-5 cm long.
- The cores of cable conductors are aligned and placed in desired sequence by connector type. They are closely pressed against each other and cut so that 1-1.5 cm remains for connection.
- The wires are brought into the connecting device with the preservation of the sequence. At the same time, the lower notch of the connector must reach the cable insulation so as not to cause damage when crimping actions are performed.
- The whole device is placed in seat ticks. After re-checking the correct arrangement of the flowers, a crimp is performed.
- Upon completion, the integrity of the connector and the strength of the connection are checked.
Crimping tools for lugs are devices that simplify the mechanical compression of connectors, wire contacts. With the help of presses, crimpers, crimping pliers, they install electrical connection online troubleshooting. We offer devices for the following types of crimping:
hexagonal;
wedge-shaped;
trapezoidal.
Design and advantages of press machines
Crimping tools are made from hardened steel. They have a small weight, compact size, simple principle of operation. The devices consist of a ratchet mechanism, matrices, devices for unlocking and adjusting the crimp level, ergonomic handles. They are widely used in manufacturing repair centers, at home thanks to the functional features:
provide uniform crimping of cable cores and end sleeves;
create the maximum possible area of the contact association;
suitable for clamping insulated lugs of various sections, telecommunication connectors.
They differ in crimping methods: oval, square or four matrices. There are also universal devices with interchangeable nozzles.
Sale of crimping tools online at AVS-electro
You can buy crimping tools in our online store. The catalog contains models of mechanisms with removable matrices and fixed nozzles. Products manufactured by ABB, DKC, IEK, Legrand, Schneider Electric and other brands comply with international standards, safe to operate.
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 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.
Later in the article we will tell you how to use crimping pliers manual and hydraulic type, we will give the principles of their work 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. Manual and automatic installation the required diameter 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 for end sleeves differ in their sockets 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, you must follow correct location joint edges, 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. Most professional tools are 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.
When 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 pops 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. They all go in order different section and standard 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. Insert a larger size towards the handles, a smaller one into 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 closure of matrices provides more high quality connections.
True, a variant is possible when you seem to have chosen the matrix and the tip correctly, 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 manufacturer KBT for its crimpers says that it guarantees crimping of the tips in 30,000 cycles 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, are crimping the handpiece 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 .
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 stripping pliers, the other is for 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 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
The same terminals for different wire sizes.
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 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. 
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.
- 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.
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