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NTN 49577/49520: bore d 1.7500 in, outside diameter D 4.0000 in, width W 1.2500 in, drawn to scaled 1.7500 inD 4.0000 inW 1.2500 in
Drawing: BearingLookup, to the printed bore d, outside diameter D and width W cited in the specifications below; internal detail is illustrative.

NTN 49577/49520 inch tapered roller bearing

NTN 49577/49520 inch tapered roller bearing: bore d 1.7500 in (44.450 mm), outside diameter D 4.0000 in (101.600 mm), width 1.2500 in (31.750 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 d1.7500 in (44.450 mm)
Outside diameter D4.0000 in (101.600 mm)
Width1.2500 in (31.750 mm)
Basic dynamic load rating Cr122.00 kN
Basic static load rating C0r156.00 kN

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

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