Industrial replacement referenceSource-backed records · No compatibility guesswork

JTEKT/Koyo Inch Tapered Roller Bearings · live catalog page 2

15101/243

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

Bore d25.4 mmOutside diameter D61.912 mmOverall width T19.05 mmDynamic rating Cr55.7 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

Inch family
Designation
15101/243
Family
Inch Tapered Roller Bearings
Bore d
25.4 mm
Outside diameter D
61.912 mm
Overall width T
19.05 mm
Inner ring width B
20.638 mm
Minimum corner radius r
0.8 mm
Minimum corner radius r1
2 mm
Dynamic load rating Cr
55.7 kN
Static load rating C0r
50.7 kN
Fatigue load limit Cu
7.3 kN
Grease limiting speed
6,400 rpm
Published row text
15101/243 | 25.4 | 61.912 | 19.05 | 20.638 | 0.8 | 2 | 55.7 | 50.7 | 7.3 | 6400
Open Koyo CAD ↗

Verification boundary

What still needs to match

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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