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NTN 525/522: bore d 1.5000 in, outside diameter D 4.0000 in, width W 1.3750 in, drawn to scaled 1.5000 inD 4.0000 inW 1.3750 in
Drawing: BearingLookup, to the printed bore d, outside diameter D and width W cited in the specifications below; internal detail is illustrative.

NTN 525/522 inch tapered roller bearing

NTN 525/522 inch tapered roller bearing: bore d 1.5000 in (38.100 mm), outside diameter D 4.0000 in (101.600 mm), width 1.3750 in (34.925 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 d1.5000 in (38.100 mm)
Outside diameter D4.0000 in (101.600 mm)
Width1.3750 in (34.925 mm)
Basic dynamic load rating Cr148.00 kN
Basic static load rating C0r187.00 kN

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

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