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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 Brushless 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. 4 Overhang and Speed
Overhang (mm)
20
25
50
* N = Max. Operating Speed with 13mm overhang.
14.
TROUBLESHOOTING
If a problem or concern occur, please check the following items prior to consulting your dealer.
Trouble
Brushless Motor Spindle
does not rotate or rotate
smoothly.
Overheating during
rotation.
Abnormal vibration or
noise during rotation.
Tool slippage.
High run-out.
Refer to the E3000 CONTROLLER Operation Manual.
15.
DISPOSAL OF THE BRUSHLESS MOTOR SPINDLE
When disposal of a Brushless Motor Spindle is necessary, follow the instructions from your local government
agency for proper disposal of industrial components.
Contents are subject to change without notice.
-1
Max. Speed (min
) (rpm)
N x 0.5
N x 0.3
N x 0.1
Cause
The spindle ball bearings
have been damaged.
The motor has been damaged.
Cutting debris has contaminated the
ball bearings, and the ball bearings
are damaged.
Low air pressure.
The tool shank is bent.
Cutting debris has contaminated the
ball bearing.
The spindle ball bearings have been
damaged.
Collet or collet nut are not correctly
installed.
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.
Inside of the spindle is worn.
Contaminants inside the collet and
the collet nut or the spindle.
The spindle ball bearings have been
damaged.
13
Fig. 23
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.)
2015.04.20 0002
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