NSK Tapered Roller Bearings, Single-Row Metric Design HR30311J ,D=55 Dia ø_04^220~400mm ● Spring-loaded for self-opening action

● Spring-loaded for self-opening action

Length L-key: 148  1x L-keys (32390)

Reading Indication error (µm) Backward error (µm) Repeatability (µm) Measuring force less than (N) Revolution Whole measuring range 1/10 1/2 One Two 15DZ 0

Single-Row  D=120

Set composition

NSK Tapered Roller Bearings, Single-Row Metric Design HR30311J ,D=55 Dia ø_04^220~400mm ● Spring-loaded for self-opening actionNSK Tapered Roller Bearings, Single Row Metric Design HR30311J ,D=55 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 HR30311J 55 120 31. 5 29 25 2. 5 2 150 171 3200 4300 2FB 0. 35 1. 7 0. 96 1. 63 DESIGN, TYPES, AND FEATURES Tapered roller bearings are designed so the apices