NUP type Inner ring has a brim and a brim on one side, outer ring has a brim on both sides Inner ring diameter (mm): 40 Outer ring diameter (mm): 80 Width (mm): 23 Accuracy grade: ISO 492 Dimensional accuracy Normal tolerance, rotational accuracy P6 grade Seal: Open type Operating温度范围(℃):-40至+120(润滑剂不含EP添加剂时)