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NTN 5557/5521: bore d 2.6875 in, outside diameter D 5.1181 in, width W 1.7500 in, drawn to scaled 2.6875 inD 5.1181 inW 1.7500 in
Drawing: BearingLookup, to the printed bore d, outside diameter D and width W cited in the specifications below; internal detail is illustrative.

NTN 5557/5521 inch tapered roller bearing

NTN 5557/5521 inch tapered roller bearing: bore d 2.6875 in (68.263 mm), outside diameter D 5.1181 in (130.000 mm), width 1.7500 in (44.450 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 d2.6875 in (68.263 mm)
Outside diameter D5.1181 in (130.000 mm)
Width1.7500 in (44.450 mm)
Basic dynamic load rating Cr210.00 kN
Basic static load rating C0r320.00 kN

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

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