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NTN 02878/02820: bore d 1.3750 in, outside diameter D 2.8750 in, width W 0.8750 in, drawn to scaled 1.3750 inD 2.8750 inW 0.8750 in
Drawing: BearingLookup, to the printed bore d, outside diameter D and width W cited in the specifications below; internal detail is illustrative.

NTN 02878/02820 inch tapered roller bearing

NTN 02878/02820 inch tapered roller bearing: bore d 1.3750 in (34.925 mm), outside diameter D 2.8750 in (73.025 mm), width 0.8750 in (22.225 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 d1.3750 in (34.925 mm)
Outside diameter D2.8750 in (73.025 mm)
Width0.8750 in (22.225 mm)
Basic dynamic load rating Cr56.50 kN
Basic static load rating C0r68.00 kN

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

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