639/177 Tapered Roller Bearing Specifications
Bore d (mm)
20
Outer D (mm)
43
Width B (mm)
13.25
Dynamic rating Cr (kN)
16.5
Static rating Cor (kN)
—
Grease limit speed (r/min)
—
Oil limit speed (r/min)
—
Frequently Asked Questions / FAQ
What are the exact dimensions of RAYSDE 639/177?
RAYSDE 639/177 Tapered Roller Bearing: bore d = 20 mm, outer diameter D = 43 mm, width/height B = 13.25 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RAYSDE 639/177 carry?
Dynamic load rating Cr = 16.5 kN and static load rating Cor = — kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RAYSDE 639/177 typically used?
Tapered Roller Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RAYSDE 639/177 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 20 mm, OD 43 mm and width 13.25 mm match ISO dimensions, 639/177 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.