2578/2523

Manufacturer-published cone/cup set dimensions and radial load ratings.

Bore B1.125 in / 28.575 mmOutside diameter D2.75 in / 69.85 mmWidth W0.9375 in / 23.812 mmDynamic rating69,000 NNTN item page ↗

Live manufacturer row

Published specifications

NTN Bearing Finder

Set number: 2578/2523
Bore B: 1.125 in / 28.575 mm
Outside diameter D: 2.75 in / 69.85 mm
Width W: 0.9375 in / 23.812 mm
Minimum corner radius r: 0.05 in / 1.3 mm
Static load rating: 18,300 lbf / 81,500 N
Dynamic load rating: 15,500 lbf / 69,000 N
Published row text: 2578/2523 | N/A 1.1250 in 28.575 mm | N/A 2.7500 in 69.850 mm | N/A 0.9375 in 23.812 mm | N/A 0.0500 in 1.300 mm | N/A 18300 lbf 81500 N 81.50 kN | N/A 15500 lbf 69000 N 69.00 kN

Verification boundary

Do not infer interchange

Exact cone/cup setConfirm both members of the set and exact series/designation.

Fits and geometryVerify shaft and housing seats, shoulders, fillets, preload/endplay, and mounting arrangement.

DutyCheck radial and axial loading, speed, lubrication, temperature, contamination, and required life.

Current dataConfirm the exact set in NTN Bearing Finder before ordering.

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