34274/34478D Tapered Roller Bearing Specifications
Bore d (mm)
69.952
Outer D (mm)
121.442
Width B (mm)
38.1
Dynamic rating Cr (kN)
165
Static rating Cor (kN)
42.7
Grease limit speed (r/min)
—
Oil limit speed (r/min)
—
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 34274/34478D?
RUIST 34274/34478D Tapered Roller Bearing: bore d = 69.952 mm, outer diameter D = 121.442 mm, width/height B = 38.1 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 34274/34478D carry?
Dynamic load rating Cr = 165 kN and static load rating Cor = 42.7 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 34274/34478D 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 34274/34478D replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 69.952 mm, OD 121.442 mm and width 38.1 mm match ISO dimensions, 34274/34478D is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.