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NTN 31310A: bore d 50.000 mm, outside diameter D 110.000 mm, width T 29.250 mm, drawn to scaled 50.000 mmD 110.000 mmT 29.250 mm
Drawing: BearingLookup, to the printed bore d, outside diameter D and width T cited in the specifications below; internal detail is illustrative.

NTN 31310A metric tapered roller bearing

NTN 31310A metric tapered roller bearing: bore d 50.000 mm (1.9685 in), outside diameter D 110.000 mm (4.3307 in), width 29.250 mm (1.1516 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 d50.000 mm (1.9685 in)
Outside diameter D110.000 mm (4.3307 in)
Width29.250 mm (1.1516 in)
Basic dynamic load rating Cr116.00 kN
Basic static load rating C0r130.00 kN

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

Same size, other makers and types (50 × 110 × 29.25 mm)

PartManufacturerType
30310CRKoyometric tapered roller bearing
30310DJRKoyometric tapered roller bearing
30310JRKoyometric 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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