Full-Bore Collet Chuck Boosts Spindle Capacity

Originally titled 'Collet Chuck Boosts Spindle Capacity'

Lexair’s full-bore, fixed length, self-contained collet chuck allows full capacity spindle operation, due to elimination of the drawtube, boosting spindle capacity as much as 30 percent. 

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Lexair’s full-bore, fixed length, self-contained collet chuck allows full capacity spindle operation, due to elimination of the drawtube. When using the full-bore chuck, spindle capacity is boosted as much as 30 percent, and clamping pressure is unaffected by centrifugal force, regardless of rpm, the company says.

An adjustable grip lightly grasps delicate tubing or clamps tight for deep rough-cutting operations. The chuck can be used on main or subspindles, rotary indexers and machining center tables.

When clamping, a mechanical locking action holds the workpiece, even without air pressure, for failsafe operation. The chuck uses air to release the work, rather than secure it, and spring force holds the workpiece while it is being machined. According to the company, the chuck has full concentricity adjustment to help maintain accuracy when using master collets with S-type pads.