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NTN 3880/3820: bore d 1.6250 in, outside diameter D 3.3750 in, width W 1.1875 in, drawn to scaled 1.6250 inD 3.3750 inW 1.1875 in
Drawing: BearingLookup, to the printed bore d, outside diameter D and width W cited in the specifications below; internal detail is illustrative.

NTN 3880/3820 inch tapered roller bearing

NTN 3880/3820 inch tapered roller bearing: bore d 1.6250 in (41.275 mm), outside diameter D 3.3750 in (85.725 mm), width 1.1875 in (30.162 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 d1.6250 in (41.275 mm)
Outside diameter D3.3750 in (85.725 mm)
Width1.1875 in (30.162 mm)
Basic dynamic load rating Cr105.00 kN
Basic static load rating C0r132.00 kN

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

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