639/632D Tapered Roller Bearing Specifications
Bore d (mm)
63.5
Outer D (mm)
136.525
Width B (mm)
76.2
Dynamic rating Cr (kN)
376
Static rating Cor (kN)
97.4
Grease limit speed (r/min)
—
Oil limit speed (r/min)
—
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 639/632D?
RUIST 639/632D Tapered Roller Bearing: bore d = 63.5 mm, outer diameter D = 136.525 mm, width/height B = 76.2 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 639/632D carry?
Dynamic load rating Cr = 376 kN and static load rating Cor = 97.4 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 639/632D 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 639/632D replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 63.5 mm, OD 136.525 mm and width 76.2 mm match ISO dimensions, 639/632D is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.