Slewing Bearing, Cross Roller Bearing, Thin Section Bearing manufacturer / supplier in China, offering Toothless Ball Bearing Slewing Ring Rks. 060.20.0414 Size 486*342*56mm, External Gear Roller Bearing Slewing Ring Rks. 161.16.1314 Size 1448*1229*68mm, 50mn/42CrMo Slewing Ball Bearing Ring Used for Tower Crane 061.20.0644.500.01.1503 and so on.