●Races:Cr Mo ●Balls:Si3N4 Silicon Nitride (HRC 75-89) ●Retainer:Nylon ●Sealing:Rubber LLB (non-contact) ●Grease:Multemp PS2 (Kyodo Yushi) ●Tolerance:ABEC-5 ●Quantity of balls:9 pcs ●Dimension of balls:2.381(3/32)mm ●Basic dynamic load rating:2.120 k N ●Basic static load rating:0.985 k N