5309 Bearing Specifications
Bore d (mm)
45
Outer D (mm)
100
Width B (mm)
39.7
Dynamic rating Cr (kN)
75.5
Static rating Cor (kN)
51
Grease limit speed (r/min)
4500
Oil limit speed (r/min)
6000
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 5309?
RUIST 5309 Bearing: bore d = 45 mm, outer diameter D = 100 mm, width/height B = 39.7 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 5309 carry?
Dynamic load rating Cr = 75.5 kN and static load rating Cor = 51 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 5309 typically used?
Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST 5309 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 45 mm, OD 100 mm and width 39.7 mm match ISO dimensions, 5309 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.