51244J Thrust Ball Bearing Specifications
Bore d (mm)
220
Outer D (mm)
300
Width B (mm)
63
Dynamic rating Cr (kN)
365
Static rating Cor (kN)
1430
Grease limit speed (r/min)
700
Oil limit speed (r/min)
950
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 51244J?
RUIST 51244J Thrust Ball Bearing: bore d = 220 mm, outer diameter D = 300 mm, width/height B = 63 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 51244J carry?
Dynamic load rating Cr = 365 kN and static load rating Cor = 1430 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 51244J 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 51244J replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 220 mm, OD 300 mm and width 63 mm match ISO dimensions, 51244J is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.