15578/15520/B Tapered Roller Bearing Specifications
Bore d (mm)
25.4
Outer D (mm)
57.15
Width B (mm)
17.462
Dynamic rating Cr (kN)
42.6
Static rating Cor (kN)
50.1
Grease limit speed (r/min)
—
Oil limit speed (r/min)
—
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 15578/15520/B?
RUIST 15578/15520/B Tapered Roller Bearing: bore d = 25.4 mm, outer diameter D = 57.15 mm, width/height B = 17.462 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 15578/15520/B carry?
Dynamic load rating Cr = 42.6 kN and static load rating Cor = 50.1 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 15578/15520/B typically used?
Tapered Roller Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST 15578/15520/B replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 25.4 mm, OD 57.15 mm and width 17.462 mm match ISO dimensions, 15578/15520/B is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.