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NTN 30308: bore d 40.000 mm, outside diameter D 90.000 mm, width T 25.250 mm, drawn to scaled 40.000 mmD 90.000 mmT 25.250 mm
Drawing: BearingLookup, to the printed bore d, outside diameter D and width T cited in the specifications below; internal detail is illustrative.

NTN 30308 metric tapered roller bearing

NTN 30308 metric tapered roller bearing: bore d 40.000 mm (1.5748 in), outside diameter D 90.000 mm (3.5433 in), width 25.250 mm (0.9941 in).

Metric tapered roller bearings · All NTN part numbers

Cutaway rendering of a tapered roller bearing with the cup pulled away to show the tapered rollers on the cone
A typical metric tapered roller bearing — not necessarily this part. Photo: “Tapered-roller-bearing din720 120-ex” by Silberwolf, CC BY 2.5, via Wikimedia Commons (resized).

Specifications

Bore d40.000 mm (1.5748 in)
Outside diameter D90.000 mm (3.5433 in)
Width25.250 mm (0.9941 in)
Basic dynamic load rating Cr91.50 kN
Basic static load rating C0r102.00 kN

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

Same size, other makers and types (40 × 90 × 25.25 mm)

PartManufacturerType
30308DJRKoyometric tapered roller bearing
30308JRKoyometric tapered roller bearing
30308XRKoyometric tapered roller bearing

These match this part on the dimensions each maker prints. A size match is not a stated interchange: check the other specifications before substituting.

Related parts

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