M12649/10

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

Bore d21.43 mmOutside diameter D50.005 mmOverall width T17.526 mmDynamic rating Cr48.8 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

Inch family

Designation: M12649/10
Family: Inch Tapered Roller Bearings
Bore d: 21.43 mm
Outside diameter D: 50.005 mm
Overall width T: 17.526 mm
Inner ring width B: 18.288 mm
Minimum corner radius r: 1.2 mm
Minimum corner radius r1: 1.2 mm
Dynamic load rating Cr: 48.8 kN
Static load rating C0r: 40.7 kN
Fatigue load limit Cu: 5.8 kN
Grease limiting speed: 8,500 rpm
Published row text: M12649/10 | 21.43 | 50.005 | 17.526 | 18.288 | 1.2 | 1.2 | 48.8 | 40.7 | 5.8 | 8500

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.