28137/300

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

Bore d34.925 mmOutside diameter D76.2 mmOverall width T20.638 mmDynamic rating Cr71.6 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

Inch family

Designation: 28137/300
Family: Inch Tapered Roller Bearings
Bore d: 34.925 mm
Outside diameter D: 76.2 mm
Overall width T: 20.638 mm
Inner ring width B: 20.94 mm
Minimum corner radius r: 1.6 mm
Minimum corner radius r1: 1.2 mm
Dynamic load rating Cr: 71.6 kN
Static load rating C0r: 65.9 kN
Fatigue load limit Cu: 9.7 kN
Grease limiting speed: 5,300 rpm
Published row text: 28137/300 | 34.925 | 76.2 | 20.638 | 20.94 | 1.6 | 1.2 | 71.6 | 65.9 | 9.7 | 5300

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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