NJ228EM Cylindrical Roller Bearing Specifications
Bore d (mm)
140
Outer D (mm)
250
Width B (mm)
42
Dynamic rating Cr (kN)
485
Static rating Cor (kN)
515
Grease limit speed (r/min)
2400
Oil limit speed (r/min)
3000
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST NJ228EM?
RUIST NJ228EM Cylindrical Roller Bearing: bore d = 140 mm, outer diameter D = 250 mm, width/height B = 42 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST NJ228EM carry?
Dynamic load rating Cr = 485 kN and static load rating Cor = 515 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST NJ228EM 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 NJ228EM replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 140 mm, OD 250 mm and width 42 mm match ISO dimensions, NJ228EM is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.