389A/384D Tapered Roller Bearing Specifications
Bore d (mm)
53.975
Outer D (mm)
100
Width B (mm)
42.862
Dynamic rating Cr (kN)
147
Static rating Cor (kN)
38
Grease limit speed (r/min)
—
Oil limit speed (r/min)
—
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 389A/384D?
RUIST 389A/384D Tapered Roller Bearing: bore d = 53.975 mm, outer diameter D = 100 mm, width/height B = 42.862 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 389A/384D carry?
Dynamic load rating Cr = 147 kN and static load rating Cor = 38 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 389A/384D 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 389A/384D replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 53.975 mm, OD 100 mm and width 42.862 mm match ISO dimensions, 389A/384D is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.