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NTN 25577/25521: bore d 1.6880 in, outside diameter D 3.2700 in, width W 0.9375 in, drawn to scaled 1.6880 inD 3.2700 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 25577/25521 inch tapered roller bearing

NTN 25577/25521 inch tapered roller bearing: bore d 1.6880 in (42.875 mm), outside diameter D 3.2700 in (83.058 mm), width 0.9375 in (23.813 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 d1.6880 in (42.875 mm)
Outside diameter D3.2700 in (83.058 mm)
Width0.9375 in (23.813 mm)
Basic dynamic load rating Cr76.00 kN
Basic static load rating C0r98.00 kN

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

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