34300-478B Tapered roller bearing
Cage: steel cage;
Type: 302xx; 303xx; 313xx; 320xx; 322xx; 323xx; 329xx; 330xx;331xx; 332xx
Double row: D / CD
Four row: 331202 E/C550 331480 G etc..
Advantages:
Strong Combined Load Capacity: Can handle very high combined radial and axial loads simultaneously, ideal for applications with overturning moments.
Easy Adjustment: Internal clearance or preload can be set by adjusting the axial distance between the cups and cones.
Typical Applications: Standard in automotive wheel hubs, gearboxes, and rolling mill roll necks.
Tapered roller bearings are widely used in the automotive, rolling mill, mining, metallurgy, and plastics machinery industries.
34300-478B Tapered roller bearing
d | 76.2 mm | Bore diameter |
D | 121.44 mm | Outside diameter |
T | 11.91 mm | Total width |
d1 | ≈106.1 mm | Shoulder diameter of inner ring |
B | 23.01 mm | Width of inner ring |
C | 17.46 mm | Width of outer ring |
C0 | 82 kN | Basic dynamic load rating |
C0r | 113 kN | Basic static load rating |
≈m | 0.958 kg | Weight |


