I have inspected once again bearing specification of Raven AC.
The web site states:
"Bronze bearing, 16 mm hard metal shaft with ball on top, running on a thrust washer of 'Material S ® (green)'. This is a special low-pressure PE based material with a very low coefficient of friction and very high wear resistance, giving a long maintenance free life without the need for additional lubrication. Bushing is machined exactly to fit the bearing with zero float, yet remains replaceable."
It seems that the most important part in contact with shaft bearing is those green PE based insert. This probably exclude any lubricant with abrasive parts.
The friend of mine recomends automotive Shyntetics oil Mobil One 10W30.
He claims that oil R&D and development is WAY beyond the ability of the audio designers.
The mount of research which goes into making an oil capable of withstanding 10,000 RPM at 400F, while maintaining viscosity, is something none of the audiophile gurus can do.
At 33 rpm per minute, under minimal stress with no temperature changes, the Mobil One can last > 10,000 years in the turntable.
How do you think about these theory?
The web site states:
"Bronze bearing, 16 mm hard metal shaft with ball on top, running on a thrust washer of 'Material S ® (green)'. This is a special low-pressure PE based material with a very low coefficient of friction and very high wear resistance, giving a long maintenance free life without the need for additional lubrication. Bushing is machined exactly to fit the bearing with zero float, yet remains replaceable."
It seems that the most important part in contact with shaft bearing is those green PE based insert. This probably exclude any lubricant with abrasive parts.
The friend of mine recomends automotive Shyntetics oil Mobil One 10W30.
He claims that oil R&D and development is WAY beyond the ability of the audio designers.
The mount of research which goes into making an oil capable of withstanding 10,000 RPM at 400F, while maintaining viscosity, is something none of the audiophile gurus can do.
At 33 rpm per minute, under minimal stress with no temperature changes, the Mobil One can last > 10,000 years in the turntable.
How do you think about these theory?