NNU4948 Cylindrical Roller Bearing Specifications
Bore d (mm)
240
Outer D (mm)
320
Width B (mm)
80
Dynamic rating Cr (kN)
770
Static rating Cor (kN)
1450
Grease limit speed (r/min)
1600
Oil limit speed (r/min)
2000
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST NNU4948?
RUIST NNU4948 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 NNU4948 carry?
Dynamic load rating Cr = 770 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 NNU4948 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 NNU4948 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 240 mm, OD 320 mm and width 80 mm match ISO dimensions, NNU4948 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.