Replacing The Collet - Nakanishi CTS-2630 Operation Manual

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9. REPLACING THE COLLET

CAUTION

• The collet and collet nut are consumable parts and will wear out with use. Replace the

collet or collet nut if collet force decreases or there are signs of wear or scratches.

• When installing the collet in the collet nut, make sure that the tabs of the collet nut are

properly seated in the groove of the collet. If the tabs are not properly seated when you

tighten the collet nut, the collet may become stuck inside the spindle.

（1） Loosen the collet nut with the cutting drill installed as described in section "8. CHANGING THE

DRILL". Keep turning the collet nut until it comes out of the spindle shaft together with the cutting

drill, and then remove the cutting drill from the collet. (Fig. 4)

（2） Hold the collet nut in one hand, and tilt the collet to one side to release it. If the collet is not released,

try tilting it to the other side. (Fig. 5)

（3） Hold the collet nut in one hand, and install the collet. (Fig. 6)

If the collet is diﬃcult to install, tilt the collet to one side when inserting it, so that the tabs can more

easily be seated in the groove. (Fig. 5, Fig. 6)

At this time, make sure that the tabs of the collet nut are properly seated in the groove of the collet. (Fig. 7)

Collet nut

Spindle shaft

Drill

Loosen

Fig. 4

Collet

Tilt

Collet nut

Fig. 5

Groove

Tab

Collet nut

Fig. 6

Tab

Fig. 7

Groove

Collet

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