GSC GS-29, Operation Manual

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VI. Choose of Grinding Wheel & Collet
1. Please unplug the power cord before changing grinding wheel.
2. Choose the proper grinding wheel according to the material of the drill.
● HSS drill use CBN grinding wheel (Standard).
● Carbide drill use SD grinding wheel (Optional).
3. Choose the proper collet according to the drill diameter.
E.g.
12.0 mm drill, use 12 mm collet ; 12.1 - 13.0 mm drills, use 13 mm collet.
VII. Chuck Set Assembly Steps
1. Make sure there are no dust or scraps inside the clamping nut, collet and collet holder.
2. Put the collet into collet holder by 45° angle. (Fig. 7-1)
3. Screw in a little bit by clamping nut, then insert the drill through the collet holder until
the drill tip is about 15 mm out of the clamping nut (Fig. 7-2), slightly screw the chuck set
to tighten the drill a little bit.
※
Do not fully tighten the chuck set, make sure the drill can still be adjusted.
Collet
Collet Holder
Fig. 7-1
15 mm
Drill
Collet Holder
Collet
Clamping Nut
Chuck set
Fig. 7-2
9