53256X Bearing Specifications
Bore d (mm)
280
Outer D (mm)
380
Width B (mm)
85
Dynamic rating Cr (kN)
450
Static rating Cor (kN)
1950
Grease limit speed (r/min)
530
Oil limit speed (r/min)
800
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 53256X?
RUIST 53256X Bearing: bore d = 280 mm, outer diameter D = 380 mm, width/height B = 85 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 53256X carry?
Dynamic load rating Cr = 450 kN and static load rating Cor = 1950 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 53256X typically used?
Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST 53256X replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 280 mm, OD 380 mm and width 85 mm match ISO dimensions, 53256X is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.