13687/21

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

Bore d38.1 mmOutside diameter D69.012 mmOverall width T19.05 mmDynamic rating Cr61.7 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

Inch family

Designation: 13687/21
Family: Inch Tapered Roller Bearings
Bore d: 38.1 mm
Outside diameter D: 69.012 mm
Overall width T: 19.05 mm
Inner ring width B: 19.05 mm
Minimum corner radius r: 2 mm
Minimum corner radius r1: 2.4 mm
Dynamic load rating Cr: 61.7 kN
Static load rating C0r: 62 kN
Fatigue load limit Cu: 8.95 kN
Grease limiting speed: 5,600 rpm
Published row text: 13687/21 | 38.1 | 69.012 | 19.05 | 19.05 | 2 | 2.4 | 61.7 | 62 | 8.95 | 5600

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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