51102 AST Material 52100 chrome steel. or equivalent. Thrust ball bearings

Bearing number 51102 Brand AST Bore Diameter (mm) 15 Outer Diameter (mm) 28 Bearing Type with grooved raceway(s) Bore Dia (d) 15.0000 Outer Dia (D) 28.0000 Radius (min) (rs) 0.300 Static Load Rating (Cor) 16.800 Dynamic Load Rating (Cr) 10.500 Max Speed (Grease) (X1000 RPM) 6 Max Speed (Oil) (X1000 RPM) 8 Height (H) 9.0000