NNU4956 Cylindrical Roller Bearing Specifications
Bore d (mm)
280
Outer D (mm)
380
Width B (mm)
100
Dynamic rating Cr (kN)
1180
Static rating Cor (kN)
2230
Grease limit speed (r/min)
1300
Oil limit speed (r/min)
1700
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST NNU4956?
RUIST NNU4956 Cylindrical Roller Bearing: bore d = 280 mm, outer diameter D = 380 mm, width/height B = 100 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST NNU4956 carry?
Dynamic load rating Cr = 1180 kN and static load rating Cor = 2230 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST NNU4956 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 NNU4956 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 280 mm, OD 380 mm and width 100 mm match ISO dimensions, NNU4956 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.