Longworth Chuck 300mm

Longworth Chuck 300mm

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These clamping washers are used in conjunction with a conventional chuck and clamping jaw (not included). The clamping discs LSC-300 fit into a 50 mm clamping jawS.

The clamping discs are clamped in the chuck and can be adjusted to the respective workpiece size using the adjustment mechanism. The retaining pins adapt very well to the workpiece radius (see pictures).

 Ideal for small rework and careful removal of the recess on a finished workpiece.


Not suitable for processing or turning "raw" workpieces! Max. rotation speed 500 rpm!

Clamping range*:

  • Inside: approx. 100 - 250 mm
  • Outside: approx. 150 - 280 mm

*Depending on the chuck & jaws used. A suitable shape of the workpiece is a prerequisite, especially for spreading!


Various formulations are used for the clamping distances or clamping ranges.
We use the terms "outside" and "inside" 

Inside = clamping or clamping the workpiece
Outside = spreading or expanding the clamping jaws

  Technical specifications:

  • Diameter approx. 300 mm
  • Suitable for center heights from 150 mm
  • Diameter of the recording disc approx. 58 mm
  • for 50 mm clamping jaws
  • Weight approx. 2 kg

 Delivery without chuck and clamping jaws!