I recently purchased an old LC-30 milling machine. Swapped the motor and ran it for the first time. All seems okay except the sheave attached to the motor has a noticeable wobble, I would estimate about 1/8".
I transferred the key from the old motor to the new. The shaft diameter of the old and new shafts are the same. There is a thin metal spacer that fits between the sheave and the shaft. It fits quite snug when installed.
Possibilities:
- Sheave has been dropped at some point
- motor shaft is bent, (I could check with a dial gauge, however it looks fine)
- The spacer is incorrect and needs to be a few mils thicker?
- Poor installation, not sure what I could have done wrong, however I never swapped a sheave before.
Advice and suggestions welcome
I transferred the key from the old motor to the new. The shaft diameter of the old and new shafts are the same. There is a thin metal spacer that fits between the sheave and the shaft. It fits quite snug when installed.
Possibilities:
- Sheave has been dropped at some point
- motor shaft is bent, (I could check with a dial gauge, however it looks fine)
- The spacer is incorrect and needs to be a few mils thicker?
- Poor installation, not sure what I could have done wrong, however I never swapped a sheave before.
Advice and suggestions welcome