A4059/A4138 Tapered Roller Bearing Specifications
Bore d (mm)
14.987
Outer D (mm)
34.988
Width B (mm)
10.998
Dynamic rating Cr (kN)
12.2
Static rating Cor (kN)
11.5
Grease limit speed (r/min)
—
Oil limit speed (r/min)
—
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST A4059/A4138?
RUIST A4059/A4138 Tapered Roller Bearing: bore d = 14.987 mm, outer diameter D = 34.988 mm, width/height B = 10.998 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST A4059/A4138 carry?
Dynamic load rating Cr = 12.2 kN and static load rating Cor = 11.5 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST A4059/A4138 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 A4059/A4138 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 14.987 mm, OD 34.988 mm and width 10.998 mm match ISO dimensions, A4059/A4138 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.