
54
Troubleshooting
Symptoms
Causes/Points of checking
Countermeasures
Abnormal vibration and noise. Cutting
Accessory center run-out.
The Cutting Accessory mounted has been
deformed.
Replace the Cutting Accessory with a new one.
●
The bearing has overheated.
●
Foreign materials inside.
●
The bearing has worn out.
Contact your Authorized NSK Dealer.
The Cutting Accessory cannot be removed
when operating the Twist Collet, Latch or
Removal Lever.
The Chuck has been damaged.
Incorrect Cutting Accessory is mounted.
The Cutting Accessory mounted has been
deformed.
The Attachment cannot be removed from
the Motor.
Connection part has been deformed.
Contact your Authorized NSK Dealer.
The Attachment is not removed the
correctly.
Remove the Attachment correctly (see "4 – 1
Connecting and Disconnecting the
Attachment").
11 – 3 BMH Series Attachment
Symptoms
Causes/Points of checking
Countermeasures
The Attachment cannot be connected to the
Motor.
The Alignment Pin and Alignment Hole are
not in position.
Connect the Attachment correctly (see "5 – 1
Connecting and Disconnecting the
Attachment").
Connection part has been deformed.
Contact your Authorized NSK Dealer.
The Cutting Accessory cannot be firmly
mounted.
The Cutting Accessory has not been
inserted deep enough.
Insert the Cutting Accessory all the way
through.
The Chuck is closed.
Check the procedure of Mounting and
Removing Cutting Accessories, etc.
Incorrect Cutting Accessory is mounted.
Check the applicable Cutting Accessory.
The Cutting Accessory mounted has been
deformed.
Replace the Cutting Accessory with a new one.
The blade part of the Cutting Accessory
mounted has worn out.
No rotation when the Hand Switch is
depressed.
Safety Lock of the Motor is " OFF ".
Slide the Safety Lock of the Motor to the ON
position.
– In case of no rotation when the Safety
Lock is in ON position, there may be a
malfunction. Contact your Authorized NSK
Dealer.
No rotation when the Cutting Accessory is
securely mounted.
●
The bearing has overheated.
●
Foreign materials inside.
●
The bearing has worn out.
Contact your Authorized NSK Dealer.