Clearance on 9" SB drive wheel

jcollings · Jul 14, 2019

Looking for the clearance measurement on the cone pulley motor drive assembly, bench model. there is a collar that locks the shaft in place. Next to the drive assembly cone pulley After that collar is locked there is a small amount of play that the shaft can slide back-and-forth which gives a clearance to the motor drive wheel that the V belt run on.

was looking for that clearance dimension. if anyone has that in their notes it would be nice to confirm.

Thank you
John C

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jcollings · Jul 16, 2019

South Bend 9" lathes .......
I would think someone would have Information or opinion on this topic.
I did see on the schematic diagram also had a washer along with the lock collar.
if anybody has a good description On their 9" South Bend with this set up or something that they can compare to their machine it would be most helpful.

Thank you

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iwananew10K · Jul 16, 2019

Since there is no thrust loads, really free rotation is the only requirement.

But as a default .002-.004" (.001"-.002" per side) should be fine.

jcollings · Jul 16, 2019

.02 clearances would be where lines indicating as that lock collar holds it between that leg of the frame.
Still wondering what happen
To the #7 washer on my machine, possibly never installed?

Thank you

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jcollings · Jul 16, 2019

.002

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iwananew10K · Jul 16, 2019

i don't think all of them had the washer...the ones that did it was a fiber material.

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Clearance on 9" SB drive wheel

jcollings

Aluminum

jcollings

Aluminum

iwananew10K

Diamond

jcollings

Aluminum

jcollings

Aluminum

iwananew10K

Diamond

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