3984/3920 Tapered Roller Bearing Specifications
Bore d (mm)
66.675
Outer D (mm)
112.712
Width B (mm)
30.162
Dynamic rating Cr (kN)
129
Static rating Cor (kN)
191
Grease limit speed (r/min)
—
Oil limit speed (r/min)
—
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 3984/3920?
RUIST 3984/3920 Tapered Roller Bearing: bore d = 66.675 mm, outer diameter D = 112.712 mm, width/height B = 30.162 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 3984/3920 carry?
Dynamic load rating Cr = 129 kN and static load rating Cor = 191 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 3984/3920 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 3984/3920 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 66.675 mm, OD 112.712 mm and width 30.162 mm match ISO dimensions, 3984/3920 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.