M86643R/10

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

Bore d25.4 mmOutside diameter D64.292 mmOverall width T21.432 mmDynamic rating Cr69.1 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

Inch family

Designation: M86643R/10
Family: Inch Tapered Roller Bearings
Bore d: 25.4 mm
Outside diameter D: 64.292 mm
Overall width T: 21.432 mm
Inner ring width B: 21.432 mm
Minimum corner radius r: 1.6 mm
Minimum corner radius r1: 1.6 mm
Dynamic load rating Cr: 69.1 kN
Static load rating C0r: 70.7 kN
Fatigue load limit Cu: 9.9 kN
Grease limiting speed: 6,400 rpm
Published row text: M86643R/10 | 25.4 | 64.292 | 21.432 | 21.432 | 1.6 | 1.6 | 69.1 | 70.7 | 9.9 | 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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