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NTN 12175/12303: bore d 1.7500 in, outside diameter D 3.0312 in, width W 0.6875 in, drawn to scaled 1.7500 inD 3.0312 inW 0.6875 in
Drawing: BearingLookup, to the printed bore d, outside diameter D and width W cited in the specifications below; internal detail is illustrative.

NTN 12175/12303 inch tapered roller bearing

NTN 12175/12303 inch tapered roller bearing: bore d 1.7500 in (44.450 mm), outside diameter D 3.0312 in (76.992 mm), width 0.6875 in (17.462 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 d1.7500 in (44.450 mm)
Outside diameter D3.0312 in (76.992 mm)
Width0.6875 in (17.462 mm)
Basic dynamic load rating Cr44.00 kN
Basic static load rating C0r54.00 kN

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

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