1304K Self-Aligning Ball Bearing Specifications
Bore d (mm)
20
Outer D (mm)
52
Width B (mm)
15
Dynamic rating Cr (kN)
13.8
Static rating Cor (kN)
3.35
Grease limit speed (r/min)
12000
Oil limit speed (r/min)
15000
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 1304K?
RUIST 1304K Self-Aligning Ball Bearing: bore d = 20 mm, outer diameter D = 52 mm, width/height B = 15 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 1304K carry?
Dynamic load rating Cr = 13.8 kN and static load rating Cor = 3.35 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 1304K 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 1304K replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 20 mm, OD 52 mm and width 15 mm match ISO dimensions, 1304K is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.