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Pliers-Basic Principle

Pliers is based on two arms of leverage design. The smaller external force which forced on the handle of pliers to transfer for bigger power. Pliers can clamp or cut efficiently.
When loaded the force on the arm of pliers, there will be another external force moved to increase along with leverage ratio. 

In case of the pliers which have been produced a larger force, thus its distance (from the centre of the rivet to the handle) must be longer and the distance (from the rivet centre to the gripping jaws or cutting edge) must be as smaller as possible.

Cutting pliers to sever or pinch off. (Diagonal Cutting Nippers KT-6211,  Diagonal Cutting Nippers KT-6231, End Cutting Pliers KT-6411, Stripping Pliers KT-6711…etc.)
Gripping pliers to pinch off. (Bent Nose Pliers, Long Nose Pliers, Groove Joint Pliers KT-6511 and 6516、Slip Joint Pliers KT-6463…etc.)
Combination pliers, which are used both for severing and for gripping. (Combination Pliers KT-6111, Long Nose Pliers KT-6311…etc.)
Pliers included three parts:
Handle uses to hold. According to ergonomic design of the pliers handle , it’s for users hold it safely and comfortable.
Joint : This is the connection shaft of pliers. Connection point must be fixed & assembled flat .You can use single handle to open or close the pliers easily.
Pliers head: It has cutting edge and pliers jaw. The end of its head should be grounded precisely to be the excelleent shaped. The two cutting edges must be sharp and fitted exactly to make it easy to cut wires .




 The Distinction of Joint Structure


such as the pincers. the two halves of the pliers are placed on top of each other - without being milled out - and riveted.


such as the combination pliers. Here one half of the pliers turns around the rivet but in a milled-out recess in the other shank.


such as the groove joint pliers. The box joint in which half of a pliers is pushed through a slit in the other half of the pliers.

Pliers is made by Alloy Steel , usually it will be produced by medium carbon steel (contained 0.45% carbon). But for high quality pliers whicH can be worked on industry, the pliers will be made of high carbon steel, like chrome vanadium alloy steel.


The design of rivets

There are two different ways to rivet the pliers:

Dr.Q reminds:
To use oil(like:DW40) for maintenance of its polish surfaces and connection parts of pliers regularly, so they can be maintained in good working conditions and extended its using life.



Pliers Jaw

There are three basic shapes of the pliers jaws: flat, half-round and round. Various shapes were used for different purposes.For example: Long Nose Pliers

For example: The combination pliers are used to clamp something.

For example: The long nose pliers without side cutter. Their flat, round jaws are also suitable for soldering work.

For example: The electrical pliers are used to  bend  the coil.



 Direction and Position of Cutters

In order to cut wire efficiently in different thicknesses and materials, it is important to choose a pair of pliers which have been specifically designed for the job in hand. The pliers come in three distinct cutting styles - diagonal, end and center cutters.
They all have high-frequency-hardened (or induction-hardened) cutting edges.


Diagonal cutters:

They are the most popular cutting pliers and are offered in a large variety of lengths, shapes and cutting edges for different materials.

Center cutters:
They provide good stability at the cutting edges combined with a favorable cutting edge angle, i.e. a relatively small amount of force is needed to penetrate and "split" the wire. Consequently, the amount of hand pressure required is also reduced.

End and oblique cutters:

They are used where access to wire is only possible or advisable from a frontal or angled position. This can also apply where a wire has to be cut close to the surface. (In this situation, using a diagonal cutter, the fingers around the handles would be in the way).



Main cutting types

Cutting Nippers can be divided into three different types of cutters:


With bevel (standard)
Cutting edges with a bevel are suitable for all wire classes, depending on the nipper design and capacity.

With small bevel (semi flush) Cutting edges with a small bevel are suitable for all wire classes apart from piano wire, depending on the nipper design.

Without bevel (full flush) Cutting edges without a bevel are only suitable for soft materials, i.e. lead and plastics.



The blade angle of diagonal cutting nippers


The blade angle:13 ~ 42°
Diagonal cutting nippers KT#6211 (European type):15°
Diagonal cutting nippers KT#6213 (Japanesque type) :37°
Diagonal cutting nippers KT#6231 (Heavy duty type):15°
Plastic Pliers KT#6921  :15°



Name for each parts of pliers



Combination Pliers 6111、6112、6116


The combination pliers can do (almost) anything.
The basic functions of the combination pliers are gripping and cutting.


The cutting edges are suitable for cutting wire, nails, smaller cables.

The serrated jaw is applicable to grip flat materials and small tools.

The serrated round jaw is applicable to grip circle materials.

The 6112 series combination pliers use different leverage design, so they can cut wires more easier than general combination pliers and grip  more solid.



Diagonal Cutting Nippers 62116213623169216216-06A6236-07A

The diagonal cutting nippers are most commonly used. They are found in every electrician’s basic.
Principally, a good diagonal cutting nippers have induction hardened cutting edges which are sufficiently sharp and fitted each other exactly over the entire cutting edge length.


 Please always placed the wire to be closer near its joint. It will increased the leverage and considerably reduces loaded force on it.



Circlip Pliers 66、67、68 serial

They served to be assembled and disassembled C clip. These are used on all the construction of vehicles and machinery, and they are especially used for fixing bearings on shafts or into bore holes.

Internal rings are used in bore holes. Using an appropriate size of pliers for internal rings, the ring is pressed together, thereby reducing the diameter and allowing it to be put on or taken off.

The external ring is used on axles and shafts. The pliers for external rings are used to enlarge the diameter so that the ring can be put on or taken off.

 It is important to use a size of pliers which suits the size of the ring. The respective acceptable ring diameter is printed on the KINGTONY circlip pliers.



End Cutting Pliers (Woodworking Pliers)6431

End Cutting Pliers are used widely and particularly popular because of their sturdiness.
As their cutting edges are at the front and they are stable in construction, they are especially suitable for pulling out nails, clips ..etc.



Long Nose Pliers 631163136318-08A

"Long nose pliers with cutting edge" is a standard design. Their function is similar with the function of combination pliers, but their shape is much slimmer. The difference will be on its head the its gripping jaws is longer and narrower.



Both of them can be used for gripping and cutting. The slim, half round internally-serrated gripping jaws can access narrowed place easily. They can be used precisely on the thinnest parts tightly and safely.



Groove Joint Pliers 6511、6516

The groove joint  pliers are gripping pliers with an adjustable joint. The width of its jaw and gripping capacity can be changed according to the set position.

The angular or oval jaw opening is usually serrated and is also referred to as the burner hole. Originally the water pump pliers were used to tighten the packed glands in water pumps in motor vehicles, which is how they got their name. Water pump pliers are suitable for gripping all kinds of items with larger diameters too, regardless of whether they are round, square or hexagonal.

A good groove joint  pliers which must be with a bigger capacity of its adjustable position.



Lock - Grip Pliers 6011系列

It can be clamped effectively when we are welding 

1. Appearance: Curved jaws can be used in any place.
2.Cutting Capability:  Metal wires.
3. Specifications and Capability:


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