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Table 3. Overhang and Speed
Overhang ( mm )
20
25
50
N=Max. Operating Speed with 13mm overhang.
13 . TROUBLESHOOTING
If a problem or concern occurs, please check the following prior to consulting your dealer.
Trouble
The ball bearings are damaged.
Spindle does not
run.
Motor is broken.
Cutting debris has contaminated
the ball bearing, and the ball
Overheating
bearing is damaged.
during rotation.
Low air pressure.
Using bent tool.
Abnormal vibration
Cutting debris has contaminated
or noise during
the ball bearing.
rotation.
The ball bearings are worn.
Collet or collet nut are not
correctly installed.
Tool slippage.
The collet and the collet nut are
worn.
The tool is bent.
Collet nut is not correctly installed.
The collet and the collet nut are
worn.
High run-out.
Inside of the spindle is worn.
Contaminants inside the collet and
the collet nut or the spindle.
The ball bearings are worn.
10
Max. Speed ( min
)
-1
N x 0.5
N x 0.3
N x 0.1
Cause
Inspection /Corrective Action
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
Replace the motor.
(Return to NAKANISHI dealer service.)
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
Check air hose connection and air pressure.
Replace the tool.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
Check and clean the collet and collet nut. And,
tighten the collet accurately again.
Replace the collet and the collet nut.
Change the tool.
Secure the collet and the collet nut correctly.
Replace the collet and the collet nut.
Replace the spindle shaft.
(Return to NAKANISHI dealer service.)
Clean the collet, collet nut and the inside of the
taper and spindle.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
13
Fig. 20
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