81256F1 Thrust Ball Bearing Specifications
Bore d (mm)
280
Outer D (mm)
380
Width B (mm)
80
Dynamic rating Cr (kN)
1130
Static rating Cor (kN)
5280
Grease limit speed (r/min)
250
Oil limit speed (r/min)
350
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 81256F1?
RUIST 81256F1 Thrust Ball Bearing: bore d = 280 mm, outer diameter D = 380 mm, width/height B = 80 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 81256F1 carry?
Dynamic load rating Cr = 1130 kN and static load rating Cor = 5280 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 81256F1 typically used?
Thrust Ball Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST 81256F1 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 280 mm, OD 380 mm and width 80 mm match ISO dimensions, 81256F1 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.