NN3940MB Cylindrical Roller Bearing Specifications
Bore d (mm)
200
Outer D (mm)
280
Width B (mm)
60
Dynamic rating Cr (kN)
480
Static rating Cor (kN)
815
Grease limit speed (r/min)
3200
Oil limit speed (r/min)
3800
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST NN3940MB?
RUIST NN3940MB Cylindrical Roller Bearing: bore d = 200 mm, outer diameter D = 280 mm, width/height B = 60 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST NN3940MB carry?
Dynamic load rating Cr = 480 kN and static load rating Cor = 815 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST NN3940MB 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 NN3940MB replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 200 mm, OD 280 mm and width 60 mm match ISO dimensions, NN3940MB is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.