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NTN 3479/3420: bore d 1.4375 in, outside diameter D 3.1250 in, width W 1.1563 in, drawn to scaled 1.4375 inD 3.1250 inW 1.1563 in
Drawing: BearingLookup, to the printed bore d, outside diameter D and width W cited in the specifications below; internal detail is illustrative.

NTN 3479/3420 inch tapered roller bearing

NTN 3479/3420 inch tapered roller bearing: bore d 1.4375 in (36.512 mm), outside diameter D 3.1250 in (79.375 mm), width 1.1563 in (29.370 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 d1.4375 in (36.512 mm)
Outside diameter D3.1250 in (79.375 mm)
Width1.1563 in (29.370 mm)
Basic dynamic load rating Cr93.00 kN
Basic static load rating C0r114.00 kN

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

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