Drawbar / Spigot
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How do I choose the right drawbar?
It's essential to choose a drawbar compatible with your specific machine tool and chuck combination. Check the chuck product description, and you will know which one you need. -
A drawbar is a vital part of a workholding system, responsible for securely gripping the tool in place. It acts like a clamp, using force to hold the toolholder or workpiece tightly within the chuck. This is especially important during machining when the tool experiences strong cutting forces. By...
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Which drawbar/spigot should I choose?
Automatic / Manual Automatic drawbars are designed to be swapped using a toolchanger. If you don’t use one, we recommend the Manual option. Black Steel / Stainless Steel We recommend black steel screws for drawbars because they have fewer harmonics. For EDM and WEDM applications, stainless steel... -
Why are there markings on the clamping ring of my spigot/drawbar?
The markings or indentations you’ve observed on the clamping ring of the spigot/drawbar are typically caused by the bearings applying pressure during clamping. This is a normal occurrence, especially with newer chucks that operate at the higher end of their clamping force range. It does not affec...