NU311EW Cylindrical Roller Bearing Specifications
Bore d (mm)
55
Outer D (mm)
120
Width B (mm)
29
Dynamic rating Cr (kN)
169
Static rating Cor (kN)
143
Grease limit speed (r/min)
4500
Oil limit speed (r/min)
5600
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST NU311EW?
RUIST NU311EW Cylindrical Roller Bearing: bore d = 55 mm, outer diameter D = 120 mm, width/height B = 29 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST NU311EW carry?
Dynamic load rating Cr = 169 kN and static load rating Cor = 143 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST NU311EW typically used?
Cylindrical Roller Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST NU311EW replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 55 mm, OD 120 mm and width 29 mm match ISO dimensions, NU311EW is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.