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In Reply to: Ping Tubesforever- ROK bearing question posted by jsax420 on August 6, 2009 at 08:36:11:
I use whatever tools I have available to fully support the bearing and then use a 20 ton shop press to drive out the main spindle. Make sure to iindex the rifle to the platter so you can reorient it properly.
Do you have a way to check the run out on your drive interface and the top of the platter? These are critical pieces of the puzzle. I would clean these up so they are as tight as possible. A Basis table will be within 0.00025 inches. This is sick....but that's why they sound like a master tape playback.
In the past I made a clean cut to get the surface flat, then mirror polished this surface. I used a grinding stone to take off the tall spots along the surface of the bearing shaft and then polish this as well.
Now I am using a hardened mirror polished thrust surface closer to ruby in characteristics for the thrust pad. This is sonically superior. If you send me the platter I can cut the bearing for the thrust surface. Then just use a silicone nitride ball and you are good to go.
Here is a pic of a stock bearing....
Here is a pic of a mirror polished thrust surface
This is a huge improvement over the stock bearing when you use a Silicone Nitride ball (About 10-12 dollars from BocaBearing.com or McMaster.com.
Here is the cut made to the Rek O Kut to receive the hardened thrust surface.
And finally the improved bearing pad.
BTW, just ask around about my improved bearing CDR test cuts. This is not a subtle improvement, it will rock the house!
I think the shop press cost under 200 dollars form Harbor Freight.
I hope some of this helps.
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Follow Ups
- RE: Ping Tubesforever- ROK bearing question - tubesforever 00:41:49 08/07/09 (4)
- RE: Ping Tubesforever- Thanks! - jsax420 07:11:47 08/08/09 (0)
- RE: Ping Tubesforever- ROK bearing question - hifipaul 05:45:51 08/07/09 (2)
- Its in testing right now.... - tubesforever 23:53:11 08/07/09 (1)
- Anyone out there doing turntable spindle work? - daibee@aol.com 12:16:13 01/05/22 (2)
- RE: Anyone out there doing turntable spindle work? - BillWojo 13:20:40 01/07/22 (1)
- Jim Howard's brother-in-law machine shop - daibee@aol.com 12:31:10 03/12/22 (0)