2304 Self-Aligning Ball Bearing Specifications
Bore d (mm)
20
Outer D (mm)
52
Width B (mm)
21
Dynamic rating Cr (kN)
20.3
Static rating Cor (kN)
4.7
Grease limit speed (r/min)
11000
Oil limit speed (r/min)
14000
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 2304?
RUIST 2304 Self-Aligning Ball Bearing: bore d = 20 mm, outer diameter D = 52 mm, width/height B = 21 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 2304 carry?
Dynamic load rating Cr = 20.3 kN and static load rating Cor = 4.7 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 2304 typically used?
Self-Aligning Ball Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST 2304 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 20 mm, OD 52 mm and width 21 mm match ISO dimensions, 2304 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.