QJ321 Angular Contact Ball Bearing Specifications
Bore d (mm)
105
Outer D (mm)
225
Width B (mm)
49
Dynamic rating Cr (kN)
335
Static rating Cor (kN)
640
Grease limit speed (r/min)
2400
Oil limit speed (r/min)
3200
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST QJ321?
RUIST QJ321 Angular Contact Ball Bearing: bore d = 105 mm, outer diameter D = 225 mm, width/height B = 49 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST QJ321 carry?
Dynamic load rating Cr = 335 kN and static load rating Cor = 640 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST QJ321 typically used?
Angular Contact Ball Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST QJ321 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 105 mm, OD 225 mm and width 49 mm match ISO dimensions, QJ321 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.