NN4920MB Cylindrical Roller Bearing Specifications
Bore d (mm)
100
Outer D (mm)
140
Width B (mm)
40
Dynamic rating Cr (kN)
178
Static rating Cor (kN)
295
Grease limit speed (r/min)
6300
Oil limit speed (r/min)
7500
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST NN4920MB?
RUIST NN4920MB Cylindrical Roller Bearing: bore d = 100 mm, outer diameter D = 140 mm, width/height B = 40 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST NN4920MB carry?
Dynamic load rating Cr = 178 kN and static load rating Cor = 295 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST NN4920MB 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 NN4920MB replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 100 mm, OD 140 mm and width 40 mm match ISO dimensions, NN4920MB is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.