- Joined
- Mar 22, 2014
- Messages
- 849
This is a subject that I have been pondering myself. I need to make an 9-inch diameter 2-step pulley for a 3/4 inch shaft. I do worry that because of the large diameter, the pulley is likely to have more runout than I would like.
I had good luck with a smaller pulley. I made a 4-inch diameter countershaft pulley for my Atlas mill. I mounted the slug in my 4-jaw chuck and did all the operations without taking it out of the chuck. The last thing I did was flip the pulley over in the chuck to part it off and clean up the face, but that had no affect on runout as the sheaves and shaft hole were already done. The pulley runs true with no observable runout.
I had good luck with a smaller pulley. I made a 4-inch diameter countershaft pulley for my Atlas mill. I mounted the slug in my 4-jaw chuck and did all the operations without taking it out of the chuck. The last thing I did was flip the pulley over in the chuck to part it off and clean up the face, but that had no affect on runout as the sheaves and shaft hole were already done. The pulley runs true with no observable runout.