Race set for Dempster 8’ 12A model

[jctgater@aol.com]

Hi everyone,

I’m new to the forum and in the process of rebuilding my second Dempster. All I need to wrap up my mill is the find a race set (parts 1155 and 1156) to replace my original set which has a damaged unusable lower race. Any leads would be appreciated. Will pay what you ask.

Regards,

Jeff G.
San Luis Obispo, CA

[windybob]

Check all sources from the car parts places, internet, bearing companies, etc. Timken was the original supplier for Dempster, other companies should make them also. I would shoot for Timken and see what happens.

[rockingjl]

You can sometimes find these on ebay with the 3/4" balls included

[windybob]

Oh my. I'm sorry. I thought you were talking about shaft bearings. You mean the turntables. ( upper and lower).
I can't believe it. This is the first mistake I've ever made in my life. Lol

[Wayne]

Don't fell to bad Windy I didn't catch what he was looking for either. I had been told they were called the upper and lower castings. I didn't pay attention to the part num. A word of caution that set for an 8 ft mill doesn't use 3/4 balls they are 5/8.

[windybob]

True, but it's a 12A which is a whole different animal. They are really 3/4.

The word race steered me in a different direction. I was thinking roller bearing race. I don't remember part numbers, so that didn't ring a bell either.

Upper and lower turntable castings have larger holes too. Because of the larger diameter neckpipe.

[Wayne]

Gotcha!

[pcowley (RIP)]

Caution! A Challenge 27 is very similar but will not fit Dempster.Challenge has a lock ring to hold two halves of bearing races together.

[Dave Straub]

You have to be careful trying to match 1155 and 1156 parts. Trying to match either one with a substitute race may not be the same. Tolerances varied in production. Fill the bearing up with balls and rotate and check for no side play and the bearing turns smooth.