32004JR

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

Bore d20 mmOutside diameter D42 mmOverall width T15 mmDynamic rating Cr34.1 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

Metric family

Designation: 32004JR
Family: Metric Tapered Roller Bearings
Bore d: 20 mm
Outside diameter D: 42 mm
Overall width T: 15 mm
Inner ring width B: 15 mm
Minimum corner radius r: 0.6 mm
Minimum corner radius r1: 0.6 mm
Dynamic load rating Cr: 34.1 kN
Static load rating C0r: 31.5 kN
Fatigue load limit Cu: 4.35 kN
Grease limiting speed: 9,700 rpm
Published row text: 32004JR | 20 | 42 | 15 | 15 | 0.6 | 0.6 | 34.1 | 31.5 | 4.35 | 9700

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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