30302JR

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

Bore d15 mmOutside diameter D42 mmOverall width T14.25 mmDynamic rating Cr27.4 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

Metric family

Designation: 30302JR
Family: Metric Tapered Roller Bearings
Bore d: 15 mm
Outside diameter D: 42 mm
Overall width T: 14.25 mm
Inner ring width B: 13 mm
Minimum corner radius r: 1 mm
Minimum corner radius r1: 1 mm
Dynamic load rating Cr: 27.4 kN
Static load rating C0r: 19.2 kN
Fatigue load limit Cu: 2.65 kN
Grease limiting speed: 10,000 rpm
Published row text: 30302JR | 15 | 42 | 14.25 | 13 | 1 | 1 | 27.4 | 19.2 | 2.65 | 10000

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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