3386/20

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

Bore d39.688 mmOutside diameter D80.167 mmOverall width T29.37 mmDynamic rating Cr114 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

Inch family

Designation: 3386/20
Family: Inch Tapered Roller Bearings
Bore d: 39.688 mm
Outside diameter D: 80.167 mm
Overall width T: 29.37 mm
Inner ring width B: 30.391 mm
Minimum corner radius r: 0.8 mm
Minimum corner radius r1: 3.2 mm
Dynamic load rating Cr: 114 kN
Static load rating C0r: 106 kN
Fatigue load limit Cu: 16.2 kN
Grease limiting speed: 5,000 rpm
Published row text: 3386/20 | 39.688 | 80.167 | 29.37 | 30.391 | 0.8 | 3.2 | 114 | 106 | 16.2 | 5000

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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