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NTN 18590/18520: bore d 1.6250 in, outside diameter D 2.8750 in, width W 0.6562 in, drawn to scaled 1.6250 inD 2.8750 inW 0.6562 in
Drawing: BearingLookup, to the printed bore d, outside diameter D and width W cited in the specifications below; internal detail is illustrative.

NTN 18590/18520 inch tapered roller bearing

NTN 18590/18520 inch tapered roller bearing: bore d 1.6250 in (41.275 mm), outside diameter D 2.8750 in (73.025 mm), width 0.6562 in (16.667 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 D2.8750 in (73.025 mm)
Width0.6562 in (16.667 mm)
Basic dynamic load rating Cr46.00 kN
Basic static load rating C0r55.50 kN

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

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