Our comprehensive Chuck Jaw Programme encompasses the very best in off-the-shelf Standard Jaws, both from the world leaders in Jaw Manufacturing Technology, and direct from the chuck manufacturer; Plus our own designed and manufactured Specials to customer requirement.

Standard Jaw Catalogues are available on request, or we can carry out an on site Jaw Survey to itemise all your shop floor jaw requirements. Please contact the team to make arrangements.

In house CAD ensures effective and fast proposals for special tooling, and more importantly correct, functional jaws with a flair that will benefit your production of components, supplied in rapid fashion.




Our Special Jaws are designed around your components, your chuck, your budget. Give us the criteria, and we guarantee to “fit the bill”. We have handled projects which have catered for whole product assemblies, right through the operation process – and have handled components from all sectors of the industry.

We at Rocksteady  reckon that the design of Jaws is an art as much as a science – why not commission us?


Most modern CNC lathes come equipped with Kitagawa power chucks. We are able to supply a complete range of Soft and Hard Jaws, plus tee nuts for these chucks from stock – and at highly competitive prices!

Our multiple sourcing policy means that a wide range of Blank Jaw sizes is always readily available – whether you require extra height, width, aluminium jaws, or full wrap round – we have the answer.

Quentes Clamping Inserts (above) are a composite Clamping Insert, suitable for machining insitu. The Fibreglass insert offers a high coefficient of friction, avoiding surface marking of sensitive components. This system can be adapted to all chuck types

A range of Base Jaws is available ex-stock for Wedge Bar type Quick Change Chucks from SMW, Berg, Forkardt, Rohm, Schunk and Kitagawa. These offer substancial savings on the manufacturers list prices. The quality of these jaws is excellent, as with all Schunk products.

Pendulum Jaws – these are used where thin-walled components are needed to be held securely – whilst reducing the deformation under clamping to an absolute minimum. These Jaws would normally be considered as specials, however Schunk offer a fantastic range “off the shelf”