HR30311DJ Tapered Roller Bearing Specifications
Bore d (mm)
55
Outer D (mm)
120
Width B (mm)
31.5
Dynamic rating Cr (kN)
161
Static rating Cor (kN)
153
Grease limit speed (r/min)
2800
Oil limit speed (r/min)
4000
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST HR30311DJ?
RUIST HR30311DJ Tapered Roller Bearing: bore d = 55 mm, outer diameter D = 120 mm, width/height B = 31.5 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST HR30311DJ carry?
Dynamic load rating Cr = 161 kN and static load rating Cor = 153 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST HR30311DJ 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 HR30311DJ replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 55 mm, OD 120 mm and width 31.5 mm match ISO dimensions, HR30311DJ is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.