Questions to J.A. Michell turntable owners...


How often do you change the oil in your record platter bearing?

What is your preferred cleaning process to the bearing assembly 
prior to adding new oil?

Have you tried pure synthetic motor oil (Mobil One or other) in lieu of the 
factory oil?

If you have tried pure synthetic, what weight (5w20 - 0w20 - etc.) did you
decide upon and why?

Thank You for your honest reply!

quincy
I have owned Michell tables since the seventies and with my first Gyro around 84 . I have owned a couple DC units after that original AC motor unit including the current SE I sold a couple years back. Now have my second Orbe SE, the first with AC motor and now with current DC motor/controller.


I change the oil every year. Not a recommendation , merely a service I choose to do to keep them performing new and "clean". I repaired tables in a past life so I take it as a very inexpensive opportunity to tune it up when removing the platter to thoroughly clean the residue around the perimeter, built up from the belts contact. If I don’t have the Michell oil at hand , Mobil synthetic 0W40 is what is recommended. It has no additives that are used to bond and fill micro scratches in cylinder walls for engines. The rifling in the bronze bearing is how the oil climbs from the well to the ball above.

Doing it yearly when the belt residue is cleaned just makes sense to do as it also puts the ball back at a new point of contact instead of 5 years of wear on a single point. The residue left on the platter/pulley is more detrimental to drag/speed and belt wear and should be done to all belt drives routinely/yearly. The oil can be left but for how little time and cost it takes why do a half arse job. Its a good opportunity to clean the table thoroughly of any dust and keeping it looking as new as well as performing as such and checking all layers for level and checking/ fine tuning suspension. Contrary to the false claims mostly by OCD individuals , The Gyro and Orbe are very easy to set the suspension and get the proper bounce , and they stay that way till moved or manipulated.
Thank you to both members for such a succinct and detailed reply! 

I am currently on a 4 year bearing cleaning/oiling plan and will bump that down to a 2 year schedule, at the minimum.

It is my understanding that the small ball bearing at the bottom of the hydrodynamic bearing is only a 'catch bearing', and comes into use only when the platter spools down to zero RPM.  The bronze bearing shaft rests on the small ball bearing, thus maintaining the proper oil reservoir level.  The instructions I received with my table are vague on this subject.

I had not considered 'build up' from the 'O' Ring belt drive onto the platter itself.  

What detailed method do you utilize to clean the platter drive belt grooves? 

The platter has a (unknown type of ) black coating on it and I would not want to remove it with harsh chemicals or over aggressive  'scrubbing'.

Once again,  thanks for the great feedback.......That is what makes this such a great site!!
@quincy I checked the oil; this is the Mobil 1 0W 40. show this

What is your Michell's model that you do not know yet?

You have the platter black color?   Clean it only from dust or for a more thorough cleaning use a wet sponge with soap and water (better if it is neutral) and then dry with a soft cloth.

I hope he understands my bad English ... sorry
best-groove. 

Thank you.  Your english is just fine.  I understand you perfectly. 

I may try a gentle soap type cleaner on a few cotton balls and gently press them into the platter grooves where the 'O' rings runs. 

I'll let you know how dirty the cotton balls came out once I perform the experiment.  The platter grooves have never been cleaned........
I may try a gentle soap type cleaner on a few cotton balls and gently press them into the platter grooves where the ’O’ rings runs.



Yeeees....perfect idea....but have two belts or one? Show your turntable pls