25590/26

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

Bore d45.618 mmOutside diameter D85 mmOverall width T23.812 mmDynamic rating Cr96.8 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

Inch family

Designation: 25590/26
Family: Inch Tapered Roller Bearings
Bore d: 45.618 mm
Outside diameter D: 85 mm
Overall width T: 23.812 mm
Inner ring width B: 25.4 mm
Minimum corner radius r: 3.6 mm
Minimum corner radius r1: 2.4 mm
Dynamic load rating Cr: 96.8 kN
Static load rating C0r: 100 kN
Fatigue load limit Cu: 15.1 kN
Grease limiting speed: 4,800 rpm
Published row text: 25590/26 | 45.618 | 85 | 23.812 | 25.4 | 3.6 | 2.4 | 96.8 | 100 | 15.1 | 4800

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.