344A/332

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

Bore d40 mmOutside diameter D80 mmOverall width T21 mmDynamic rating Cr85 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

Inch family

Designation: 344A/332
Family: Inch Tapered Roller Bearings
Bore d: 40 mm
Outside diameter D: 80 mm
Overall width T: 21 mm
Inner ring width B: 22.403 mm
Minimum corner radius r: 0.8 mm
Minimum corner radius r1: 1.2 mm
Dynamic load rating Cr: 85 kN
Static load rating C0r: 74.8 kN
Fatigue load limit Cu: 11.4 kN
Grease limiting speed: 4,900 rpm
Published row text: 344A/332 | 40 | 80 | 21 | 22.403 | 0.8 | 1.2 | 85 | 74.8 | 11.4 | 4900

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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