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NTN 557S/552: bore d 2.1250 in, outside diameter D 4.8750 in, width W 1.5000 in, drawn to scaled 2.1250 inD 4.8750 inW 1.5000 in
Drawing: BearingLookup, to the printed bore d, outside diameter D and width W cited in the specifications below; internal detail is illustrative.

NTN 557S/552 inch tapered roller bearing

NTN 557S/552 inch tapered roller bearing: bore d 2.1250 in (53.975 mm), outside diameter D 4.8750 in (123.825 mm), width 1.5000 in (38.100 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 d2.1250 in (53.975 mm)
Outside diameter D4.8750 in (123.825 mm)
Width1.5000 in (38.100 mm)
Basic dynamic load rating Cr173.00 kN
Basic static load rating C0r245.00 kN

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

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