Drawbar (machine tool)

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A W-type external-thread collet (red) being pulled into its spindle seat (green) with a drawbar (blue), clamping and then releasing a shaft.

A drawbar or spindle drawbar is a clamping mechanism for toolholders on machine tools. The toolholder or machine taper itself is held by the drawbar and applies force to the spindle, especially when spinning at low speeds.

See also[]

• Drawbar Force Gauge
• Milling machine
• Machine tools

References[]

External links[]

• Don’t Forget The Drawbar, Modern Machine Shop magazine, March 2006, By Peter Zelinski

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