Use:

for workpiece clamping

for bar or chuck work

no axial movement while the  chuck is clamping


Bore patterns:

(G):  smooth
(Q):  with round grooves from 6.0 mm
(LQ):   with cross grooves from 6.0 mm, serrated in the case of round bores greater than 9.0 mm; higher clamping force

Taper angle of the clamping sleeve:
The taper of the clamping sleeve should be 15‘ (one-sided) flatter than the taper angles given in the tables. This frees the collets on release and provides low undersized clamping.

Stepped bores:
In the case of stepped bores or when using collet stops, the clamping point should be within the taper of the collet, otherwise the collet will tend to break due to bending stresses.

Hardness:
The collets are made from special spring steel. Where possible, by partial tempering, the hardness of the taper and clamping bore is approx. HRc 60. The shank and sprung area are hardened to spring.

Taper grinding:
The clamping taper is lightly ground at the slot edges to ease removal of the collets from the mounting thus making possible low undersized clamping.

Stops for collets:
Adjustable stops which are easily fitted into the rear bore of the collets. Bores are available for standard models.