NN3944MBKR Cylindrical Roller Bearing Specifications
Bore d (mm)
220
Outer D (mm)
300
Width B (mm)
60
Dynamic rating Cr (kN)
505
Static rating Cor (kN)
895
Grease limit speed (r/min)
2500
Oil limit speed (r/min)
3100
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST NN3944MBKR?
RUIST NN3944MBKR Cylindrical Roller Bearing: bore d = 220 mm, outer diameter D = 300 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 NN3944MBKR carry?
Dynamic load rating Cr = 505 kN and static load rating Cor = 895 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST NN3944MBKR 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 NN3944MBKR replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 220 mm, OD 300 mm and width 60 mm match ISO dimensions, NN3944MBKR is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.