30307XR

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

Bore d35 mmOutside diameter D80 mmOverall width T22.75 mmDynamic rating Cr87.2 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

Metric family

Designation: 30307XR
Family: Metric Tapered Roller Bearings
Bore d: 35 mm
Outside diameter D: 80 mm
Overall width T: 22.75 mm
Inner ring width B: 21 mm
Minimum corner radius r: 2 mm
Minimum corner radius r1: 1.5 mm
Dynamic load rating Cr: 87.2 kN
Static load rating C0r: 77.8 kN
Fatigue load limit Cu: 11.4 kN
Grease limiting speed: 5,200 rpm
Published row text: 30307XR | 35 | 80 | 22.75 | 21 | 2 | 1.5 | 87.2 | 77.8 | 11.4 | 5200

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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