HR31321J Tapered Roller Bearing Specifications
Bore d (mm)
105
Outer D (mm)
225
Width B (mm)
58
Dynamic rating Cr (kN)
510
Static rating Cor (kN)
540
Grease limit speed (r/min)
1500
Oil limit speed (r/min)
2000
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST HR31321J?
RUIST HR31321J Tapered Roller Bearing: bore d = 105 mm, outer diameter D = 225 mm, width/height B = 58 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST HR31321J carry?
Dynamic load rating Cr = 510 kN and static load rating Cor = 540 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST HR31321J 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 HR31321J replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 105 mm, OD 225 mm and width 58 mm match ISO dimensions, HR31321J is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.