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NTN 52401/52639: bore d 4.0000 in, outside diameter D 6.3750 in, width W 1.6250 in, drawn to scaled 4.0000 inD 6.3750 inW 1.6250 in
Drawing: BearingLookup, to the printed bore d, outside diameter D and width W cited in the specifications below; internal detail is illustrative.

NTN 52401/52639 inch tapered roller bearing

NTN 52401/52639 inch tapered roller bearing: bore d 4.0000 in (101.600 mm), outside diameter D 6.3750 in (161.925 mm), width 1.6250 in (41.275 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 d4.0000 in (101.600 mm)
Outside diameter D6.3750 in (161.925 mm)
Width1.6250 in (41.275 mm)
Basic dynamic load rating Cr205.00 kN
Basic static load rating C0r345.00 kN

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

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