Soft Jaws
Dimac soft jaws have been manufactured and supported in Australia for over 45 years, delivering precise, repeatable workholding for CNC turning and lathe machining. Made from high-quality 1045 carbon steel, they offer excellent machinability, strong clamping force and reliable concentricity.
Available in standard, tall, aluminium and custom configurations, Dimac soft jaws are compatible with leading chuck brands including Kitagawa, SMW Autoblok, Bison and TDG. They deliver consistent performance, faster setup and long service life.
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How to choose the right soft jaw for your chuck
Selecting the right soft jaw is essential for accuracy, grip and repeatability. Use the guide below and read our frequently asked questions to find the best fit for your chuck, application and production needs.
Match the Chuck
Soft jaws must match your chuck for fit, clamping force and accuracy. Provide the chuck brand, series and size when enquiring.
Choose the Jaw Style
Standard jaws suit general turning, tall jaws support longer parts, step jaws suit repeat work and pie jaws are best for thin-walled or high-precision components.
Choose the Material
Steel soft jaws are the standard choice for general machining. Aluminium soft jaws help protect softer or finished parts from marking.
Consider Modifications
Soft jaws can be modified for specific applications, including pointing, rough boring, reduced size, additional bores, weight reduction and flame hardening.
Think About Production Volume
For repeat jobs, dedicated jaws can reduce setup time. For high-precision work, pie jaws or freshly bored soft jaws may be the better option.
Need Something Custom?
If a standard option does not suit your application, contact Dimac for a custom soft jaw solution.
FAQs
We’ve answered some of the most common questions below. If your question is not covered, please get in touch.
Dimac supports Kitagawa, Bison, TDG, SAV, SMW Autoblok and MMK. Samchully, Howa and Strong are also compatible with Kitagawa patterns.
Common serrations include 1.5 mm x 60°, 1.5 mm x 90° and 3 mm x 60°. The serration must match correctly to maintain clamping force and concentricity.
Soft jaws must match the chuck size, serration and mounting pattern. If you are unsure, provide the chuck brand, series and size and Dimac can confirm suitability.
1045 carbon steel is the standard choice for general machining. 6061 aluminium is better suited to softer or finished parts where marking must be avoided.
Yes. Dimac can modify standard soft jaws to suit specific applications, including pointing, rough boring, reduced size, additional mounting bores, weight reduction and flame hardening.
If a standard product is not suitable, Dimac can assist with a custom soft jaw solution.