@terry9
No , I have not made categorical statements about how "all" bearings work.
I have specifically spoke and used turntable applications with a completely different complexity for use and will not be found in your internet search’s in the generalities of bearing applications from manufacturing sites . The bearing on a turntable is a special consideration and YES , I have made it clear , that the reduction in friction and noise at point source where the bearing contacts IS the ideal. Not an after thought of hit and miss band aids.
The general information your referring to is good to use as a reference. However, bearings in machinery with moving parts are easily reduced of vibration at the point its fastened to the machines frame/body (think plinth) with dampening materials where vibration is the ONLY focus.
You cannot do that with a turntable without not only reducing vibrations, but ALSO deadening/altering the sound. All the physics talk and research you have done , cannot change the fact, the noise and vibration starts at the point of contact where movement is. Everything after that is not the source to remove it, only a band aid to help lessen its origin. That’s common sense. The platter not only sits on but is directly joined to the bearing, with a diamond vibrating on it reading tiny vibrations in the grooves of a record above is simply not the same criteria that bearings for most any other use have . Its apples and oranges .
Stopping vibration from getting to the bearing is not the same as stopping from emitting from the bearing. A turntable is kind of like a seismograph reading the grooves so sitting it on a noisy spinning bearing will not result in anything close to distortion free/less sound.
Since the stylus needs to vibrate free of any interference , even its own not being reflected back how anyone could think friction and noise aren’t related in a turntable bearing is beyond me. Quiet and very low friction are one and the same for a turntable bearing as I hear it. The bearing that some think is quiet even with higher friction , ....after its amplified about 800 times it becomes, sound, sound that distorts or masks the sound you want free of such . That amount of multiplication is harmful to the desired results.
@lewm
I brought the drag up in a earlier post above, and the grease /impregnated lubes myself. I see it as a flaw and noted that. The drag concept may of been a band aid for cogging but I humbly disagree that friction does not produce noise or that higher friction is as quiet as something with less friction when used in this application. Tighter tolerances, and reduced friction is more desirable to me than an out of round ball/shaft with a wearing surface of greater contact and surface that resembles the moon. Lubrication is made more effective as well on a smaller tighter tolerance contact also. Sorry no offence , I just won’t accept what I sure wouldn’t pay for. No disrespect to any of you.....
No , I have not made categorical statements about how "all" bearings work.
I have specifically spoke and used turntable applications with a completely different complexity for use and will not be found in your internet search’s in the generalities of bearing applications from manufacturing sites . The bearing on a turntable is a special consideration and YES , I have made it clear , that the reduction in friction and noise at point source where the bearing contacts IS the ideal. Not an after thought of hit and miss band aids.
The general information your referring to is good to use as a reference. However, bearings in machinery with moving parts are easily reduced of vibration at the point its fastened to the machines frame/body (think plinth) with dampening materials where vibration is the ONLY focus.
You cannot do that with a turntable without not only reducing vibrations, but ALSO deadening/altering the sound. All the physics talk and research you have done , cannot change the fact, the noise and vibration starts at the point of contact where movement is. Everything after that is not the source to remove it, only a band aid to help lessen its origin. That’s common sense. The platter not only sits on but is directly joined to the bearing, with a diamond vibrating on it reading tiny vibrations in the grooves of a record above is simply not the same criteria that bearings for most any other use have . Its apples and oranges .
Stopping vibration from getting to the bearing is not the same as stopping from emitting from the bearing. A turntable is kind of like a seismograph reading the grooves so sitting it on a noisy spinning bearing will not result in anything close to distortion free/less sound.
Since the stylus needs to vibrate free of any interference , even its own not being reflected back how anyone could think friction and noise aren’t related in a turntable bearing is beyond me. Quiet and very low friction are one and the same for a turntable bearing as I hear it. The bearing that some think is quiet even with higher friction , ....after its amplified about 800 times it becomes, sound, sound that distorts or masks the sound you want free of such . That amount of multiplication is harmful to the desired results.
@lewm
I brought the drag up in a earlier post above, and the grease /impregnated lubes myself. I see it as a flaw and noted that. The drag concept may of been a band aid for cogging but I humbly disagree that friction does not produce noise or that higher friction is as quiet as something with less friction when used in this application. Tighter tolerances, and reduced friction is more desirable to me than an out of round ball/shaft with a wearing surface of greater contact and surface that resembles the moon. Lubrication is made more effective as well on a smaller tighter tolerance contact also. Sorry no offence , I just won’t accept what I sure wouldn’t pay for. No disrespect to any of you.....