Assembling collet:

Insert groove of the collet into eccentric ring of the clamping nut at the make on the bottom of the nut.

Push collet in the direction of the arrow until it clicks in. Insert tool.

Screw nut with collet onto tool holder.

※NOTE

Never clamp oversize tool shafts!!

e.g. never use a φ12-11mm collet to clamp aφ12.2mm shaft. Rather use the next bigger collet.

(here φ12.5-11.5mm or φ13-12mm collet)