309U2 Deep Groove Ball Bearing Specifications
Bore d (mm)
45
Outer D (mm)
100
Width B (mm)
25
Dynamic rating Cr (kN)
52.6
Static rating Cor (kN)
30.1
Grease limit speed (r/min)
6700
Oil limit speed (r/min)
8000
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 309U2?
RUIST 309U2 Deep Groove Ball Bearing: bore d = 45 mm, outer diameter D = 100 mm, width/height B = 25 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 309U2 carry?
Dynamic load rating Cr = 52.6 kN and static load rating Cor = 30.1 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 309U2 typically used?
Deep Groove Ball Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST 309U2 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 45 mm, OD 100 mm and width 25 mm match ISO dimensions, 309U2 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.