15101/250R

Manufacturer-published tapered-roller dimensions, load ratings, fatigue load limit, and limiting speed.

Bore d25.4 mmOutside diameter D63.5 mmOverall width T19.05 mmDynamic rating Cr55.7 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

Inch family

Designation: 15101/250R
Family: Inch Tapered Roller Bearings
Bore d: 25.4 mm
Outside diameter D: 63.5 mm
Overall width T: 19.05 mm
Inner ring width B: 20.638 mm
Minimum corner radius r: 0.8 mm
Minimum corner radius r1: 1.2 mm
Dynamic load rating Cr: 55.7 kN
Static load rating C0r: 50.7 kN
Fatigue load limit Cu: 7.3 kN
Grease limiting speed: 6,400 rpm
Published row text: 15101/250R | 25.4 | 63.5 | 19.05 | 20.638 | 0.8 | 1.2 | 55.7 | 50.7 | 7.3 | 6400

Verification boundary

Do not infer interchange

Exact set architectureConfirm metric versus inch family, cone/cup identity, series, and complete designation.

Fits and geometryVerify shaft/housing seats, shoulders, fillets, preload/endplay, and mounting arrangement.

DutyCheck combined radial/axial loading, lubrication, speed, temperature, contamination, and required life.

Current manufacturer dataUse the linked JTEKT/Koyo calculation and CAD tools before ordering.

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