21063/212

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

Bore d15.875 mmOutside diameter D53.975 mmOverall width T22.225 mmDynamic rating Cr52.6 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

Inch family

Designation: 21063/212
Family: Inch Tapered Roller Bearings
Bore d: 15.875 mm
Outside diameter D: 53.975 mm
Overall width T: 22.225 mm
Inner ring width B: 21.839 mm
Minimum corner radius r: 0.8 mm
Minimum corner radius r1: 2.4 mm
Dynamic load rating Cr: 52.6 kN
Static load rating C0r: 41.2 kN
Fatigue load limit Cu: 5.65 kN
Grease limiting speed: 8,400 rpm
Published row text: 21063/212 | 15.875 | 53.975 | 22.225 | 21.839 | 0.8 | 2.4 | 52.6 | 41.2 | 5.65 | 8400

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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