511/500M, with brass cage, Dimensions: Inner diameter d=500mm Outer diameter D=600mm Width H=80mm Dynamic load ratings C=553KN Static load ratings Co=3600KN Fatigue load limit Pu=57KN Reference speed=560 r/min Limiting speed=800 r/min Mass=47.0kg 511/500M P6 thrust ball bearings for large centrifugal machines and crane hook-THB Bearings THB single direction thrust ball bearings consist of a shaft washer, a housing washer and a ball and cage thrust assembly. The bearings are separable so that mounting is simple as the washers and the ball and cage assembly can be mounted separately.