986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - IMS

Smallblock454 · 07-26-2017, 09:02 AM

I think there are more parameters than seal deterioration.

Type of bearing and capability to handle axial force, torsion and vibrations.
Type of cage.
Type of grease if you have a sealed one - heat resistancy.
Type of sealing and seal material.
Misalignment IMS and ISMB.
Rotation Per Minute / Friction inside the IMSB.
Amount of contamination the IMSB can handle. hc
Heat and heat cycles.
Maybe fast up and downcycling when motor revs up or down.

And again. If you have a bearing that was designed to run as a sealed bearing and you remove the sealing, you have no specification, because the bearing wasn't designed for that.

There are bearings that are designed to run in oil. These might be the right choice if you want to run an open bearing,

Regards, Markus

07-26-2017, 09:02 AM	#69
Smallblock454 Registered User Join Date: Jun 2014 Location: LB, Germany Posts: 1,456	I think there are more parameters than seal deterioration. Type of bearing and capability to handle axial force, torsion and vibrations. Type of cage. Type of grease if you have a sealed one - heat resistancy. Type of sealing and seal material. Misalignment IMS and ISMB. Rotation Per Minute / Friction inside the IMSB. Amount of contamination the IMSB can handle. hc Heat and heat cycles. Maybe fast up and downcycling when motor revs up or down. And again. If you have a bearing that was designed to run as a sealed bearing and you remove the sealing, you have no specification, because the bearing wasn't designed for that. There are bearings that are designed to run in oil. These might be the right choice if you want to run an open bearing, Regards, Markus Last edited by Smallblock454; 07-26-2017 at 09:29 AM.