1988R/22

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

Bore d28.575 mmOutside diameter D57.15 mmOverall width T19.845 mmDynamic rating Cr60.8 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

Inch family

Designation: 1988R/22
Family: Inch Tapered Roller Bearings
Bore d: 28.575 mm
Outside diameter D: 57.15 mm
Overall width T: 19.845 mm
Inner ring width B: 19.355 mm
Minimum corner radius r: 3.6 mm
Minimum corner radius r1: 1.6 mm
Dynamic load rating Cr: 60.8 kN
Static load rating C0r: 57.1 kN
Fatigue load limit Cu: 8.25 kN
Grease limiting speed: 7,000 rpm
Published row text: 1988R/22 | 28.575 | 57.15 | 19.845 | 19.355 | 3.6 | 1.6 | 60.8 | 57.1 | 8.25 | 7000

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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