Patent ID: 9228624
Filing Date: 2016-01-05
CPC Classification: F16D,Y10T

Claim Text:
1. A friction assembly comprising at least a first friction element and a second friction element, which can be moved into operative connection with one another and which are lubricated with a water-based lubricant, wherein the first friction element is a friction disc, a synchronizer ring, or a double cone synchronizer ring and comprises a main body with a friction layer, wherein the friction layer has a mean arithmetic average roughness value Ra according to DIN EN ISO 4287 between 3 μm and 10 μm, a wave trough depth Wt according to DIN EN ISO 4287 of at least 30 μm and a mean groove width RSm according to DIN EN ISO 4287 of at least 150 μm, wherein the friction layer has a compressibility, which is selected from a range with a lower limit of 5% and an upper limit of 50%, and wherein pores of the friction layer have a pore size which is selected from a range with a lower limit of 25 μm and an upper limit of 900 μm.