Effects of the Metal Surface Profile to the Sliding Properties Between Rubber and Metal and Applying That to Wheel Bearing Seals 2018-01-1904
Packed shape seal that is combined the seal having flexible rubber lips and the slinger preventing the seal lip sliding area from being exposed directly by the foreign substances, has been frequently utilized on the wheel bearing that is required high reliability.
This paper described that the effects in sliding properties of rubber relating to the metal surface profile at the fundamental evaluation, at first.
As the next step, the performance of the seals which were applied the advisable metal surface profile through the advance fundamental evaluation on the slinger was confirmed concerning the rotating torque and also the endurance test against muddy water.
As the results, the seals with the metal surface the above showed approximately 30% lower torque at the rotating speed from 400 rpm to 800 rpm that is considered the vehicle city driving speed.
At the same time, the durability performance against muddy water showed almost equivalent to the seals without this metal surface.
Koki Ishida, Masahiro Fujii, Jun Hwi Cho, Kevin Pittel