Mandrel mild steel.
Taper-head screw low-carbon steel

Mandrel black oxidised.
Taper-head screw case-hardened.

The mandrel collet is particularly suitable for finishing turned parts. By turning or milling, diameter D can be adapted to the diameter of the clamped workpiece.
Low design - no interfering clamp straps.
Tightened using a hex socket wrench or hydraulics.

* D min. = smallest diameter to which ”D” may be turned or milled.
D max. – maximum diameter when unmachined
S – maximum clamping pin travel when actuated, S = 0,1 mm

Expand the mandrel approx. 0.1 mm over the relaxed diameter. Turn or mill the mandrel to suit the internal diameter of the workpiece. The base flange can be centred in a pocket or using dowel pins.

1) taper-head screw