30303JR

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

Bore d17 mmOutside diameter D47 mmOverall width T15.25 mmDynamic rating Cr34.2 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

Metric family

Designation: 30303JR
Family: Metric Tapered Roller Bearings
Bore d: 17 mm
Outside diameter D: 47 mm
Overall width T: 15.25 mm
Inner ring width B: 14 mm
Minimum corner radius r: 1 mm
Minimum corner radius r1: 1 mm
Dynamic load rating Cr: 34.2 kN
Static load rating C0r: 24.5 kN
Fatigue load limit Cu: 3.45 kN
Grease limiting speed: 9,200 rpm
Published row text: 30303JR | 17 | 47 | 15.25 | 14 | 1 | 1 | 34.2 | 24.5 | 3.45 | 9200

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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