555/S/553A Tapered Roller Bearing Specifications
Bore d (mm)
57.15
Outer D (mm)
125
Width B (mm)
38.1
Dynamic rating Cr (kN)
177
Static rating Cor (kN)
248
Grease limit speed (r/min)
—
Oil limit speed (r/min)
—
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 555/S/553A?
RUIST 555/S/553A Tapered Roller Bearing: bore d = 57.15 mm, outer diameter D = 125 mm, width/height B = 38.1 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 555/S/553A carry?
Dynamic load rating Cr = 177 kN and static load rating Cor = 248 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 555/S/553A 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 555/S/553A replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 57.15 mm, OD 125 mm and width 38.1 mm match ISO dimensions, 555/S/553A is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.