NNU4972KR Cylindrical Roller Bearing Specifications
Bore d (mm)
360
Outer D (mm)
480
Width B (mm)
118
Dynamic rating Cr (kN)
1390
Static rating Cor (kN)
3550
Grease limit speed (r/min)
1600
Oil limit speed (r/min)
1900
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST NNU4972KR?
RUIST NNU4972KR Cylindrical Roller Bearing: bore d = 360 mm, outer diameter D = 480 mm, width/height B = 118 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST NNU4972KR carry?
Dynamic load rating Cr = 1390 kN and static load rating Cor = 3550 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST NNU4972KR 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 NNU4972KR replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 360 mm, OD 480 mm and width 118 mm match ISO dimensions, NNU4972KR is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.