QJ312 Angular Contact Ball Bearing Specifications
Bore d (mm)
60
Outer D (mm)
130
Width B (mm)
31
Dynamic rating Cr (kN)
148
Static rating Cor (kN)
217
Grease limit speed (r/min)
4300
Oil limit speed (r/min)
5600
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST QJ312?
RUIST QJ312 Angular Contact Ball Bearing: bore d = 60 mm, outer diameter D = 130 mm, width/height B = 31 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST QJ312 carry?
Dynamic load rating Cr = 148 kN and static load rating Cor = 217 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST QJ312 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 QJ312 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 60 mm, OD 130 mm and width 31 mm match ISO dimensions, QJ312 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.