71980AC Angular Contact Ball Bearing Specifications
Bore d (mm)
400
Outer D (mm)
540
Width B (mm)
65
Dynamic rating Cr (kN)
420
Static rating Cor (kN)
780
Grease limit speed (r/min)
800
Oil limit speed (r/min)
1100
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 71980AC?
RUIST 71980AC 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 71980AC carry?
Dynamic load rating Cr = 420 kN and static load rating Cor = 780 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 71980AC 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 71980AC replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 400 mm, OD 540 mm and width 65 mm match ISO dimensions, 71980AC is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.