Key for collet chuck with torque wrench socket
for chuck nuts (ER) to DIN 6499.
Drive 1/2" square socket with ball-engagement groove.
Special steel, hardened and zinc-plated.
The set value for the torque wrench is dependant on insertion dimension "S".
The operating manual provided with your torque wrench contains the requisite information and calculation formulae.
Controlled tightening prevents damage to spindle changing tools on a machine.
Other sizes available.