Designed to eliminate part pullback, GMT Collet Chucks have tapered sleeve that pushes forward over a collet to compress it, resulting in precise Z-axis positioning. Units are balanced for high-speed operation. GMT Collet chucks are offered gripping capacities from 10mm to 63mm diameter.
GMT Dead Length Collet chucks are actuated by the draw tube moving forward away from the machine spindle. GMT collet chucks are actuated as draw tube moves towards machine spindle and slides the bar against pusher, resulting in consistent Z axis positioning of bar.
Features :
- High gripping
- Actuated by rotary cylinder
- All components are hardened and precision ground
- Permissible run out accuracy as per DIN 6386
- Compact design
- High concentric accuracy
- DL for all second length operation applications
- Interchangeable with GMT power chucks
- Used in CNC lathes
What is Dead Length Collet?
ReplyDeleteThe Dead-Length Collet uses the face of the spindle as its locating surface for the inner collet. Because the spindle and inner collet doesn't move when the draw bar pulls the collet back, this results in length control. This means that the turned length remains constant over a batch, without the use of a stopper.
DeleteWhat is the advantages of a collet chuck?
ReplyDeleteThe main advantage of collet chucks are:
Delete1. Holding of bright bar of “h9” tolerance to perform first and second operation.
2. Avoid jaw boring hence productivity is improved.
3. Comparatively more life than the standard chuck, as it does not have as many moving parts as a standard chuck. The bore of the collet can wear with repeated clamping and declamping, and only the collet has to be changed.
Can I hold different diameters on a collet chuck like the standard chuck?
ReplyDeleteNot possible, but we can hold certain range of diameters within the h9 tolerance range according to the design range of the collet chuck, using different collets. Please refer photo in the article.
Delete