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NTN 30318D: bore d 90.000 mm, outside diameter D 190.000 mm, width T 46.500 mm, drawn to scaled 90.000 mmD 190.000 mmT 46.500 mm
Drawing: BearingLookup, to the printed bore d, outside diameter D and width T cited in the specifications below; internal detail is illustrative.

NTN 30318D metric tapered roller bearing

NTN 30318D metric tapered roller bearing: bore d 90.000 mm (3.5433 in), outside diameter D 190.000 mm (7.4803 in), width 46.500 mm (1.8307 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 d90.000 mm (3.5433 in)
Outside diameter D190.000 mm (7.4803 in)
Width46.500 mm (1.8307 in)
Basic dynamic load rating Cr270.00 kN
Basic static load rating C0r320.00 kN

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

Same size, other makers and types (90 × 190 × 46.5 mm)

PartManufacturerType
30318DJRKoyometric tapered roller bearing
30318DRKoyometric tapered roller bearing
30318JRKoyometric tapered roller bearing
30318RKoyometric 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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