The TURBO Shaft, like all of the Arbortech products, should run smoothly and be easy to control. A lot of effort goes into making sure it is balanced and all the tolerances are correct for the application.
If it feels unbalanced or does not perform smoothly, it is an indication that something is wrong.
Possible Cause: TURBO Shaft not fitted correctly.
Solution: Please see the fitting instructions section.
Possible cause: TURBO Shaft not correctly aligned with the spindle of the grinder causing impact contact with the teeth.
Solution: Check that the shaft is fully tightened to the base of the grinder spindle. Do not use the base collar nut that is usually used to locate a grinding disc.
Try on another grinder.