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NTN 43131/43312: bore d 1.3125 in, outside diameter D 3.1250 in, width W 1.0000 in, drawn to scaled 1.3125 inD 3.1250 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 43131/43312 inch tapered roller bearing

NTN 43131/43312 inch tapered roller bearing: bore d 1.3125 in (33.338 mm), outside diameter D 3.1250 in (79.375 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 d1.3125 in (33.338 mm)
Outside diameter D3.1250 in (79.375 mm)
Width1.0000 in (25.400 mm)
Basic dynamic load rating Cr65.50 kN
Basic static load rating C0r67.00 kN

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

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