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NTN 34307/34478: bore d 3.0625 in, outside diameter D 4.7812 in, width W 0.9688 in, drawn to scaled 3.0625 inD 4.7812 inW 0.9688 in
Drawing: BearingLookup, to the printed bore d, outside diameter D and width W cited in the specifications below; internal detail is illustrative.

NTN 34307/34478 inch tapered roller bearing

NTN 34307/34478 inch tapered roller bearing: bore d 3.0625 in (77.788 mm), outside diameter D 4.7812 in (121.442 mm), width 0.9688 in (24.608 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 d3.0625 in (77.788 mm)
Outside diameter D4.7812 in (121.442 mm)
Width0.9688 in (24.608 mm)
Basic dynamic load rating Cr93.50 kN
Basic static load rating C0r136.00 kN

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

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