NF321M Cylindrical Roller Bearing Specifications
Bore d (mm)
105
Outer D (mm)
225
Width B (mm)
49
Dynamic rating Cr (kN)
420
Static rating Cor (kN)
390
Grease limit speed (r/min)
2600
Oil limit speed (r/min)
3200
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST NF321M?
RUIST NF321M Cylindrical Roller Bearing: bore d = 105 mm, outer diameter D = 225 mm, width/height B = 49 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST NF321M carry?
Dynamic load rating Cr = 420 kN and static load rating Cor = 390 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST NF321M 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 NF321M replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 105 mm, OD 225 mm and width 49 mm match ISO dimensions, NF321M is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.