53218U Bearing Specifications
Bore d (mm)
90
Outer D (mm)
135
Width B (mm)
38.5
Dynamic rating Cr (kN)
114
Static rating Cor (kN)
310
Grease limit speed (r/min)
1400
Oil limit speed (r/min)
2200
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 53218U?
RUIST 53218U Bearing: bore d = 90 mm, outer diameter D = 135 mm, width/height B = 38.5 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 53218U carry?
Dynamic load rating Cr = 114 kN and static load rating Cor = 310 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 53218U typically used?
Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST 53218U replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 90 mm, OD 135 mm and width 38.5 mm match ISO dimensions, 53218U is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.