53311U Bearing Specifications
Bore d (mm)
55
Outer D (mm)
105
Width B (mm)
39.3
Dynamic rating Cr (kN)
115
Static rating Cor (kN)
244
Grease limit speed (r/min)
1600
Oil limit speed (r/min)
2400
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 53311U?
RUIST 53311U Bearing: bore d = 55 mm, outer diameter D = 105 mm, width/height B = 39.3 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 53311U carry?
Dynamic load rating Cr = 115 kN and static load rating Cor = 244 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 53311U typically used?
Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST 53311U replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 55 mm, OD 105 mm and width 39.3 mm match ISO dimensions, 53311U is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.