QJ228 Angular Contact Ball Bearing Specifications
Bore d (mm)
140
Outer D (mm)
250
Width B (mm)
42
Dynamic rating Cr (kN)
350
Static rating Cor (kN)
775
Grease limit speed (r/min)
2000
Oil limit speed (r/min)
2800
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST QJ228?
RUIST QJ228 Angular Contact Ball Bearing: bore d = 140 mm, outer diameter D = 250 mm, width/height B = 42 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST QJ228 carry?
Dynamic load rating Cr = 350 kN and static load rating Cor = 775 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST QJ228 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 QJ228 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 140 mm, OD 250 mm and width 42 mm match ISO dimensions, QJ228 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.