A finger chuck is good example of an axially gripping chuck. These chucks are known as finger chucks due to their finger-like pull back gripping of a part. It grips unusually shaped parts, where only an axial gripping force is possible. They find application for the high-speed machining of aluminum wheels.

GMT has developed a specialized finger chuck for second operations where radial clamping is not possible. The axial tension results in a distortion-free take up of the workpiece. In addition, this chuck has workpiece locator in order to ensure the exact location. A suitable locator locates the component center. Furthermore, the fingers located in a rod, which has a helical groove ensure that the component is flat against the chuck. Also, this enables loading yet ensures accurate location.

The chuck fingers swings in and clamps the component in a single motion as a result of hydraulic rotating cylinder actuation. Actuator pin is located on helical groove for actuating the finger chuck. Fingers during de-clamping lift and swings out for component unloading and loading. Consequently, the finger chuck firmly clamps the component without any distortion or surface damage.


  • Chuck has a locator for locating the component
  • Power Operated Twist finger chucks cannot perform without locating the component
  • Fingers are located in a rod, which has a helical groove
  • Actuator pin located on helical groove for actuating the finger. Fingers during clamping and de-clamping lift, swings in and out, for component loading and unloading


Used widely in the following industries :

  • Automotive & Wheel turning
  • Aerospace
  • Defence Production
  • Oil, Energy & Wind generators
  • Heavy duty machines
  • Pump housings

Furthermore, GMT has over 60 years experience in designing and manufacturing workholding equipment to suit various special applications. We attach great importance to consultation and service. Hence, if you have a requirement of distortion free clamping, please contact us and our engineers will be happy to prove you with a suitable workholding solution.

Finally, please visit us at – a new blog dedicated to all GMT customers…interact with our technical experts.