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NTN 2580/2520: bore d 1.2500 in, outside diameter D 2.6150 in, width W 1.0000 in, drawn to scaled 1.2500 inD 2.6150 inW 1.0000 in
Drawing: BearingLookup, to the printed bore d, outside diameter D and width W cited in the specifications below; internal detail is illustrative.

NTN 2580/2520 inch tapered roller bearing

NTN 2580/2520 inch tapered roller bearing: bore d 1.2500 in (31.750 mm), outside diameter D 2.6150 in (66.421 mm), width 1.0000 in (25.400 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 d1.2500 in (31.750 mm)
Outside diameter D2.6150 in (66.421 mm)
Width1.0000 in (25.400 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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