Longworth style chuck

£130.00 *

Prices incl. VAT plus shipping costs

Ready to ship today,
Delivery time appr. 1-3 workdays

longworth size:

Product information "KS LSC 300 clamping disc, self-centering"
300mm and 400mm available form Hopewoodturnig

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 jaw, the clamping discs LSC-400 and LSC-500 fit into common 130 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! 

Diameter: 300mm
Compatible with:: 50mm clamping jaws
Clamping range: 150mm-280mm dia bowls
Nubs: x8
Speed range: 0-500 rpm max
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