31309 Tapered Roller Bearing Specifications
Bore d (mm)
45
Outer D (mm)
100
Width B (mm)
27.25
Dynamic rating Cr (kN)
97.9
Static rating Cor (kN)
113
Grease limit speed (r/min)
—
Oil limit speed (r/min)
—
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 31309?
RUIST 31309 Tapered Roller Bearing: bore d = 45 mm, outer diameter D = 100 mm, width/height B = 27.25 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 31309 carry?
Dynamic load rating Cr = 97.9 kN and static load rating Cor = 113 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 31309 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 31309 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 45 mm, OD 100 mm and width 27.25 mm match ISO dimensions, 31309 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.