NJ221EM Cylindrical Roller Bearing Specifications
Bore d (mm)
105
Outer D (mm)
190
Width B (mm)
36
Dynamic rating Cr (kN)
320
Static rating Cor (kN)
310
Grease limit speed (r/min)
3400
Oil limit speed (r/min)
4000
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST NJ221EM?
RUIST NJ221EM Cylindrical Roller Bearing: bore d = 105 mm, outer diameter D = 190 mm, width/height B = 36 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST NJ221EM carry?
Dynamic load rating Cr = 320 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 NJ221EM 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 NJ221EM replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 105 mm, OD 190 mm and width 36 mm match ISO dimensions, NJ221EM is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.