BSN2557 Angular Contact Ball Bearing Specifications
Bore d (mm)
25
Outer D (mm)
57
Width B (mm)
28
Dynamic rating Cr (kN)
34
Static rating Cor (kN)
48
Grease limit speed (r/min)
5100
Oil limit speed (r/min)
5100
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST BSN2557?
RUIST BSN2557 Angular Contact Ball Bearing: bore d = 25 mm, outer diameter D = 57 mm, width/height B = 28 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST BSN2557 carry?
Dynamic load rating Cr = 34 kN and static load rating Cor = 48 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST BSN2557 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 BSN2557 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 25 mm, OD 57 mm and width 28 mm match ISO dimensions, BSN2557 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.