Schunk chuck jaws

High standards of quality and customer satisfaction have made Schunk a market leader in chuck jaws for many years. With over 1,200 different standard types for all current lathe chucks, Schunk offers the world’s largest standard line of jaws, all manufactured with high-grade steel and aluminium.

Ground groove and serration – quality that pays!
Schunk is the first manufacturer worldwide to grind the groove and the fine serration of its soft standard chuck jaws instead of milling them. This results in improved repeat accuracy when changing jaws and ensures lasting precision in the base jaw serration. In this way, your top jaws, base jaws, and lathe chucks are preserved - allowing you to save money. Ground serrations also improve clamping stability and the quality of the work piece surfaces, for optimum machining results.

Quentes fibreglass jaws – the velvet paws among chuck jaws!
Schunk is the only manufacturer to offer its customers the Quentes fibreglass jaws. These jaws made of fibreglass-reinforced plastic enable clamping on already ground or surface-treated surfaces, since they leave no clamping marks whatsoever on the clamping surface. In combination with the large looping angle of the turned Quentes on the work piece, this ensures low-deformation clamping of the component.
The high coefficient of friction of 0.3 – 0.4 makes it possible to transfer high torques with low clamping forces. The supporting jaws of the Quentes fibreglass jaws are made of aluminium. This provides a clamping solution that – due to its low weight – also enables high machining speeds. When they wear out, Quentes clamping inserts can be replaced easily, quickly and at low cost.
The Quentes fibreglass jaws are available in two different standard models for power chucks and quick-change chucks.

Serrated bars – make your own soft top jaws!
Another special product available only from Schunk is serrated bars, from which the customers can manufacture their own soft top jaws - easily, quickly and at low cost. The bars are available in steel or aluminium, with 90° and 60° fine serration and in a standard length of 420 mm. These bars also have a ground groove and serration for a longer service life of the base jaw and for high repeat accuracy when changing jaws.