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9. Problems and Solutions
Problem
Cause
Solution
The bur does not rotate with the bur lock
ring closed.
The ball bearings have burned out or
have foreign material inside them.
Contact your Authorized NSK Dealer.*
Heat is emitted during rotation.
There is wear on the ball bearings due to
foreign material inside them.
Contact your Authorized NSK Dealer.*
Vibrations/noise is emitted during
rotation.
There is wear on the ball bearings due to
foreign material inside them.
Contact your Authorized NSK Dealer.*
A curved bur was used.
Replace the bur.
The bur has poor concentricity.
Foreign material may be attached to the
inside of the chuck.
Clean the inside of the chuck.
The chuck is worn.
Replace the chuck.
The ball bearings are worn.
Contact your Authorized NSK Dealer.*
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