NN4948MB Cylindrical Roller Bearing Specifications
Bore d (mm)
240
Outer D (mm)
320
Width B (mm)
80
Dynamic rating Cr (kN)
720
Static rating Cor (kN)
1450
Grease limit speed (r/min)
2400
Oil limit speed (r/min)
2900
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST NN4948MB?
RUIST NN4948MB Cylindrical Roller Bearing: bore d = 240 mm, outer diameter D = 320 mm, width/height B = 80 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST NN4948MB carry?
Dynamic load rating Cr = 720 kN and static load rating Cor = 1450 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST NN4948MB 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 NN4948MB replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 240 mm, OD 320 mm and width 80 mm match ISO dimensions, NN4948MB is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.