NSK Tapered Roller Bearings, Single-Row Metric Design HR30315J ,D=75

NSK Tapered Roller Bearings, Single-Row Metric Design HR30315J ,D=75   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) ISO355 Dimensions Series approx. Constant e Axial Load Factors Mass (kg) approx. d D T B C Cone r min. Cup r min. Cr C0r Grease Oil Y1 Y0 HR30315J 75 160 40 37 31 3 2.5 253 300 2400 3200 2GB 0.35 1.7 0.96 3.63   DESIGN, TYPES, AND FEATURES Tapered roller bearings are designed so the apices of the cones formed by the raceways of the inner and outer rings and the inner ring rollers all coincide at one point on the axis of the bearing. When a radial load is imposed, a component axial force occurs; therefore, it is necessary to use two bearings in opposition or some other multiple-bearing arrangement. For Metric Series medium-angle or steep-angle tapered roller bearings, the respective contact angle designation C or D is added after the bore number. For normal-angle tapered roller bearings, no contact angle designa