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NTN 390A/394CS: bore d 2.5000 in, outside diameter D 4.4680 in, width W 0.8661 in, drawn to scaled 2.5000 inD 4.4680 inW 0.8661 in
Drawing: BearingLookup, to the printed bore d, outside diameter D and width W cited in the specifications below; internal detail is illustrative.

NTN 390A/394CS inch tapered roller bearing

NTN 390A/394CS inch tapered roller bearing: bore d 2.5000 in (63.500 mm), outside diameter D 4.4680 in (113.487 mm), width 0.8661 in (22.000 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 d2.5000 in (63.500 mm)
Outside diameter D4.4680 in (113.487 mm)
Width0.8661 in (22.000 mm)
Basic dynamic load rating Cr90.00 kN
Basic static load rating C0r123.00 kN

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

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