7980A Angular Contact Ball Bearing Specifications
Bore d (mm)
400
Outer D (mm)
540
Width B (mm)
65
Dynamic rating Cr (kN)
495
Static rating Cor (kN)
750
Grease limit speed (r/min)
1400
Oil limit speed (r/min)
2000
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 7980A?
RUIST 7980A Angular Contact Ball Bearing: bore d = 400 mm, outer diameter D = 540 mm, width/height B = 65 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 7980A carry?
Dynamic load rating Cr = 495 kN and static load rating Cor = 750 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 7980A 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 7980A replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 400 mm, OD 540 mm and width 65 mm match ISO dimensions, 7980A is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.