31980X2 Tapered Roller Bearing Specifications
Bore d (mm)
400
Outer D (mm)
540
Width B (mm)
70
Dynamic rating Cr (kN)
1040
Static rating Cor (kN)
2320
Grease limit speed (r/min)
350
Oil limit speed (r/min)
450
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 31980X2?
RUIST 31980X2 Tapered Roller Bearing: bore d = 400 mm, outer diameter D = 540 mm, width/height B = 70 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 31980X2 carry?
Dynamic load rating Cr = 1040 kN and static load rating Cor = 2320 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 31980X2 typically used?
Tapered Roller Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST 31980X2 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 400 mm, OD 540 mm and width 70 mm match ISO dimensions, 31980X2 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.