Installation Manual

Holder
Normally factory fi tted onto the motor shaft as it is a very tight or interference fi t onto the shaft
in order to keep it exactly aligned. It is further held by two grub screws tightened onto the motor
shaft. It can be removed and replaced but will probably require heating to slacken the fi t and the
very careful application of force to avoid damaging the motor.
It has a tapered interior which matches the angle of the collet so that as the collet is forced into
the holder the collet is compressed and clamps round the shank of the bit. A threaded area at
the bottom to match the clamping nut and a couple of fl ats allowing a spanner to be used to
tighten and release the collet.
Collet