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⑦ Keep the cutting tool shank and collet clean. If contaminants are left in the collet or collet nut, excessive run-
out will cause damage to the cutting tool and or Spindle.
⑧ Do not strike or disassemble the Motor Spindle.
⑨ Please set the cutting tools to minimize the overhang amount. 13mm is the maximum amount of overhang to
maintain high accuracy and safety.
Table 3 . Overhang and Speed
Overhang (mm)
20
25
50
N = Max. Operating Speed with 13 mm overhang.
※
13 . TROUBLESHOOTING
If a problem or concern occur, please check the following items prior to consulting your dealer.
Trouble
Motor Spindle
The spindles ball bearings have been damaged.
does not rotate or
rotate smoothly.
The motor has been damaged.
Overheating
Cutting debris has contaminated the ball
during rotation.
bearings, and the ball bearings are damaged.
Low air pressure.
Abnormal
The tool shank is bent.
vibration or noise
Cutting debris has contaminated the ball bearing.
during rotation.
The spindles ball bearings have been damaged.
Tool slippage.
Collet or collet nut are not correctly installed.
The collet and the collet nut are worn.
High run-out.
The tool is bent.
Collet nut is not correctly installed.
The collet and the collet nut are worn.
Inside of the spindle is worn.
Contaminants inside the collet and the collet
nut or the spindle.
The spindle ball bearings has been damaged.
Refer to the E 3000 CONTROLLER Operation Manual.
14 . DISPOSAL OF THE MOTOR SPINDLE
When disposal of a Motor Spindle is necessary, follow the instructions from your local government agency for
proper disposal of industrial components.
Max. Speed (min
-1
) (rpm)
N x 0.5
N x 0.3
N x 0.1
Cause
13
Fig. 15
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.
Reinstall the collet and collet nut.
Replace the collet and 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.)
2020 . 04 . 20 0005
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