30611B Tapered Roller Bearing Specifications
Bore d (mm)
55
Outer D (mm)
125
Width B (mm)
37
Dynamic rating Cr (kN)
148
Static rating Cor (kN)
172
Grease limit speed (r/min)
2800
Oil limit speed (r/min)
3800
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 30611B?
RUIST 30611B Tapered Roller Bearing: bore d = 55 mm, outer diameter D = 125 mm, width/height B = 37 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 30611B carry?
Dynamic load rating Cr = 148 kN and static load rating Cor = 172 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 30611B 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 30611B replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 55 mm, OD 125 mm and width 37 mm match ISO dimensions, 30611B is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.