51218 Bearing Specifications
Bore d (mm)
90
Outer D (mm)
135
Width B (mm)
35
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 51218?
RUIST 51218 Bearing: bore d = 90 mm, outer diameter D = 135 mm, width/height B = 35 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 51218 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 51218 typically used?
Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST 51218 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 90 mm, OD 135 mm and width 35 mm match ISO dimensions, 51218 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.