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NTN 6318LUN: bore d 90.000 mm, outside diameter D 190.000 mm, width B 43.000 mm, drawn to scaled 90.000 mmD 190.000 mmB 43.000 mmSingle Sealed
Drawing: BearingLookup, to the printed bore d, outside diameter D and width B cited in the specifications below; internal detail is illustrative.

NTN 6318LUN deep groove ball bearing

NTN 6318LUN deep groove ball bearing Single Sealed CN (NTN Bearing Finder: Item # 6318LUN): bore d 90.000 mm (3.5433 in), outside diameter D 190.000 mm (7.4803 in), width 43.000 mm (1.6929 in).

Deep groove ball bearings · All NTN part numbers

Open deep groove ball bearing with its steel balls visible
A typical deep groove ball bearing — not necessarily this part. Photo: “1984 deep groove ball bearing UR 6304 made in Czechoslovakia by ZKL” by R. Henrik Nilsson, CC BY 4.0, via Wikimedia Commons (resized).

Specifications

Bore d90.000 mm (3.5433 in)
Outside diameter D190.000 mm (7.4803 in)
Width43.000 mm (1.6929 in)
Basic dynamic load rating Cr158.00 kN
Basic static load rating C0r107.00 kN
Limiting speed, grease lubrication2400 RPM
EnclosureSingle Sealed
Radial internal clearanceCN
Cage typePressed
Cage materialSteel
Bore typeRound
PrecisionClass 0
MaterialHigh Carbon Chrome Steel
TypeBall Bearing

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

Same size, other makers and types (90 × 190 × 43 mm)

PartManufacturerType
7318Koyoangular contact ball bearing
7318BKoyoangular contact ball bearing
7318CKoyoangular contact ball bearing
N318Koyocylindrical roller bearing
NF318Koyocylindrical roller bearing
NJ318RKoyocylindrical roller bearing
NU318RKoyocylindrical roller bearing
NUP318RKoyocylindrical roller bearing
6318 2RSKoyodeep groove ball bearing
6318 2RUKoyodeep groove ball bearing
6318 ZZXKoyodeep groove ball bearing
6318Koyodeep groove ball 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. 6 more share this size.

Related parts

Sources