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NTN 6911ZN: bore d 55.000 mm, outside diameter D 80.000 mm, width B 13.000 mm, drawn to scaled 55.000 mmD 80.000 mmB 13.000 mm
Drawing: BearingLookup, to the printed bore d, outside diameter D and width B cited in the specifications below; internal detail is illustrative; seals or shields, if any, are not shown.

NTN 6911ZN deep groove ball bearing

NTN 6911ZN deep groove ball bearing: bore d 55.000 mm (2.1654 in), outside diameter D 80.000 mm (3.1496 in), width 13.000 mm (0.5118 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 d55.000 mm (2.1654 in)
Outside diameter D80.000 mm (3.1496 in)
Width13.000 mm (0.5118 in)
Basic dynamic load rating Cr17.70 kN
Basic static load rating C0r13.30 kN

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

Same size, other makers and types (55 × 80 × 13 mm)

PartManufacturerType
7911CKoyoangular contact ball bearing
6911 2RDKoyodeep groove ball bearing
6911 2RSKoyodeep groove ball bearing
6911 2RUKoyodeep groove ball bearing
6911 ZZKoyodeep groove ball bearing
6911Koyodeep 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.

Related parts

Sources