34307/34478 Tapered Roller Bearing Specifications
Bore d (mm)
77.788
Outer D (mm)
121.442
Width B (mm)
24.608
Dynamic rating Cr (kN)
94.6
Static rating Cor (kN)
136
Grease limit speed (r/min)
—
Oil limit speed (r/min)
—
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 34307/34478?
RUIST 34307/34478 Tapered Roller Bearing: bore d = 77.788 mm, outer diameter D = 121.442 mm, width/height B = 24.608 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 34307/34478 carry?
Dynamic load rating Cr = 94.6 kN and static load rating Cor = 136 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 34307/34478 typically used?
Tapered Roller Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST 34307/34478 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 77.788 mm, OD 121.442 mm and width 24.608 mm match ISO dimensions, 34307/34478 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.