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NTN 2558/2523: bore d 1.1875 in, outside diameter D 2.7500 in, width W 0.9375 in, drawn to scaled 1.1875 inD 2.7500 inW 0.9375 in
Drawing: BearingLookup, to the printed bore d, outside diameter D and width W cited in the specifications below; internal detail is illustrative.

NTN 2558/2523 inch tapered roller bearing

NTN 2558/2523 inch tapered roller bearing: bore d 1.1875 in (30.162 mm), outside diameter D 2.7500 in (69.850 mm), width 0.9375 in (23.812 mm).

Inch tapered roller bearings · All NTN part numbers

Rendering of a tapered roller bearing with the outer cup separated from the cone and its ring of tapered rollers
A typical inch tapered roller bearing — not necessarily this part. Photo: “Tapered-roller-bearing din720 ex” by Silberwolf, CC BY 2.5, via Wikimedia Commons (resized).

Specifications

Bore d1.1875 in (30.162 mm)
Outside diameter D2.7500 in (69.850 mm)
Width0.9375 in (23.812 mm)
Basic dynamic load rating Cr69.00 kN
Basic static load rating C0r81.50 kN

All specifications: Verified printed in NTN’s own product listing

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