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NTN 08125/08231: bore d 1.2500 in, outside diameter D 2.3125 in, width W 0.5781 in, drawn to scaled 1.2500 inD 2.3125 inW 0.5781 in
Drawing: BearingLookup, to the printed bore d, outside diameter D and width W cited in the specifications below; internal detail is illustrative.

NTN 08125/08231 inch tapered roller bearing

NTN 08125/08231 inch tapered roller bearing: bore d 1.2500 in (31.750 mm), outside diameter D 2.3125 in (58.738 mm), width 0.5781 in (14.683 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 D2.3125 in (58.738 mm)
Width0.5781 in (14.683 mm)
Basic dynamic load rating Cr28.20 kN
Basic static load rating C0r32.50 kN

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

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