Another IMS bearing thread

[Steve Tinker]

Originally Posted by Jamesp

Reading bearing manufacturer data on lubrication shows that high rpm requires lower viscosity (thinner) lubrication, and low RPM requires higher viscosity lubrication. So to the folks out there with 200K+ on their cars, we know how you drive.

Or they drive at really low revs with really thick oil......

[Jake Raby]

Porsche used the ball bearing because it was the cheapest way to control radial and longitudinal loads. It killed two birds with one stone, and found them in a class action suit.

The dual row IMSB has TWO thrust control surfaces to assist with those longitudinal loads and that is a very welcome aspect of the dual row design. Two rows have proven to be better than one.