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RE: Ping Tubesforever- ROK bearing question

Posted by tubesforever (M) on August 7, 2009 at 00:41:49

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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