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Table 3. Overhang and Speed
Overhang (mm)
Max. Speed (min
-1
)
20
N x 0.5
25
N x 0.3
50
N x 0.1
N=Max. Operating Speed with 13mm overhang.
Fig. 20
13
Trouble
Cause
Inspection/Corrective Action
Spindle does not
run.
The ball bearings are damaged.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
Motor is broken.
Replace the motor.
(Return to NAKANISHI dealer service.)
Overheating
during rotation.
Cutting debris has contaminated
the ball bearing, and the ball
bearing is damaged.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
Low air pressure.
Check air hose connection and air pressure.
Abnormal vibration
or noise during
rotation.
Using bent tool.
Replace the tool.
Cutting debris has contaminated
the ball bearing.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
The ball bearings are worn.
Tool slippage.
Collet or collet nut are not
correctly installed.
Check and clean the collet and collet nut. And,
tighten the collet accurately again.
The collet and the collet nut are
worn.
Replace the collet and the collet nut.
High run-out.
The tool is bent.
Change the tool.
Collet nut is not correctly installed. Secure the collet and the collet nut correctly.
The collet and the collet nut are
worn.
Replace the collet and the collet nut.
Inside of the spindle is worn.
Replace the spindle shaft.
(Return to NAKANISHI dealer service.)
Contaminants inside the collet and
the collet nut or the spindle.
Clean the collet, collet nut and the inside of the
taper and spindle.
The ball bearings are worn.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
13
. TROUBLESHOOTING
If a problem or concern occurs, please check the following prior to consulting your dealer.
OM-K0697E000_BMS-4040-RGD Series B5 中綴じ_EN_181016.indd 10
2018/10/16 9:13:04