Special collet chucks for draw-back collets hydraulic

We manufacture special collet chucks for drawback collets in different designs with different chucking ranges. The clamping fixture shown is a stationary device, opened hydraulically by means of a mechanically operated piston.

Clamping takes place by means of plate springs located inside the housing. This makes clamping of the device self-retaining and a hydraulic connection is not required. The collet opening movement takes place via mechanical actuation of the piston and the corresponding displacement of the oil. This pushes the clamping sleeve backwards and opens the collet. As soon as the piston is released, the collet closes because the plate-spring packs push the clamping sleeve forwards.

The clamping fixture is placed on floating bearings to compensate for wobble error. This free moving space can be adjusted by four adjustment screws. Oil is added at the screw lid. To mount the collet the piston has to be actuated, so the clamping sleeve is in the rear position. The collet can be screwed in from the front and screwed tight with the special keys provided. This also has to be done before removing the collet.

Facts and figures:

  • for draw-back collets
  • no hydraulic connection required
  • mechanical actuation
  • used only in stationary application
  • different sizes and chucking ranges

Please don’t hesitate to contact us. We will be glad to provide tailormade clamping devices for your requirements.