NSK 2318-KC3 Self-Aligning Ball Bearing - 90 mm ID, 190 mm OD, 64 mm Width
NSK box for the 2311-M Self-Aligning Ball Bearing
    NSK 2318-KC3 Self-Aligning Ball Bearing - 90 mm ID, 190 mm OD, 64 mm Width
    NSK box for the 2311-M Self-Aligning Ball Bearing
NSK 2318-KC3 Self-Aligning Ball Bearing - 90 mm ID, 190 mm OD, 64 mm Width
NSK box for the 2311-M Self-Aligning Ball Bearing
NSK 2318-KC3 Self-Aligning Ball Bearing - 90 mm ID, 190 mm OD, 64 mm Width
NSK box for the 2311-M Self-Aligning Ball Bearing
    NSK 2318-KC3 Self-Aligning Ball Bearing - 90 mm ID, 190 mm OD, 64 mm Width
    NSK box for the 2311-M Self-Aligning Ball Bearing
NSK 2318-KC3 Self-Aligning Ball Bearing - 90 mm ID, 190 mm OD, 64 mm Width
NSK box for the 2311-M Self-Aligning Ball Bearing

NSK 2311-M Self-Aligning Ball Bearing - 55 mm ID, 120 mm OD, 43 mm Width

  • d 55 mm
  • D 120 mm
  • B 43 mm
  • Open (None)
  • C0 - Normal
Brand: NSK

Genuine NSK product, NSK

$471.26
$471.26
$147.60
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Bearings from Apollo Industries, Oxford, Michigan

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Oxford, MI 48370
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Overview

NSK 2311-M Self-aligning ball bearing

Self-Aligning Ball Bearing

NSK self-aligning ball bearings have two rows of balls and a common spherical outer raceway. They tolerate shaft and housing misalignment and accommodate moderate radial loads with low friction. They are ideal for applications where shaft deflection or mounting errors are expected.

Key features

  • Tolerates shaft misalignment
  • Low friction operation
  • Two rows of balls on a spherical raceway
  • Suitable for high speeds
  • Long service life with low maintenance

Specifications

NSK 2311-M dimensions & specifications

Drawing of the NSK 2311-M, bore d 55 mm, outside diameter D 120 mm, width B 43 mm B 43 mm D 120 mm d 55 mm
Drawn to scale from the catalog dimensions.
Bearing type
Self-aligning ball bearing
Bore diameter d
55 mm (2.165 in)
Outside diameter D
120 mm (4.724 in)
Width B
43 mm (1.693 in)
Seals / shields
Open (None)
Internal clearance
C0 - Normal
Weight
5.29 lb
Brand
NSK
Part number
2311-M also written 2311M

All specifications

Dimensions

Bore Diameter55 mm
Outside Diameter120 mm
Width43 mm

Properties

MaterialStandard bearing steel
CageBrass cage
SealNone, open bearing
BoreCylindrical bore
ClearanceNormal radial clearance
Inner ringStandard version
Tolerance classTolerance class P0/PN2 / ABEC 1
Temperature range-30 to +150 °C
Ball rowsDouble row bearing

Logistics

Product Net Weight2.4

Cross reference

2311-M cross reference & equivalents

Bearings from other brands with the same boundary dimensions. Check seals, clearance, cage and precision class before you order.

Reference data only. Verify specifications before you order.

Search more equivalents in the Apollo Bearing Index

Tools & lubrication

Complete the job for your 2311-M

Mount it without damage and keep it lubricated. Tick what you need and add it with one click.

Part number decoded

What every part of 2311-M means

23
23xx self-aligning ball, wide medium (dimension series 23)
11
Bore code 11 × 5 = 55 mm (ISO convention)
M
Machined brass (copper alloy) solid cage
Decode another part number

Catalogs & documents

NSK 2311-M catalogs & documents

Official catalogs and data from the manufacturer. They open as PDFs in a new tab.

About the brand

About NSK

Japan's first bearing maker, since 1916.

NSK was founded in Tokyo on 8 November 1916 and mass-produced bearings in its founding year, a first in Japan. In 1918 it built Japan's first large thrust bearings. NSK Americas was founded in 1997.

Genuine NSK product

Explore NSK bearingsShop all NSK

  • Founded

    1916

  • Headquarters

    Tokyo, Japan

Known for

  • Deep groove ball bearings
  • NSKHPS spherical and cylindrical roller bearings
  • Super precision bearings
  • Linear guides
NSK website (opens in a new tab)

Disclaimer: Apollo Industries is not an authorized distributor, reseller, or representative of NSK. All NSK trademarks and product names are the property of their respective owners. We sell genuine NSK products purchased through independent channels.

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Apollo USA Bearing Search Tool

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Learn More

FAQ

2311-M questions & answers

What are the dimensions of the NSK 2311-M?

The NSK 2311-M has a 55 mm bore (d), a 120 mm outside diameter (D) and a 43 mm width (B). In inches: 2.165 × 4.724 × 1.693 in.

What type of bearing is the 2311-M?

The NSK 2311-M is a self-aligning ball bearing.

Is the 2311-M sealed or shielded?

The NSK 2311-M is an open bearing (Open (None)): it has no seals or shields.

What internal clearance does the 2311-M have?

The NSK 2311-M has C0 - Normal internal clearance.

What can I use instead of the NSK 2311-M?

Equivalents with the same boundary dimensions include SKF 2311, MRC 2311, Consolidated 2311, NTN 2311, Timken 2311. Check the seals, internal clearance, cage and precision class before you order.

Is this a genuine NSK bearing?

Yes. Apollo Industries sells genuine NSK products, purchased through independent channels. Apollo is not an authorized distributor, reseller, or representative of NSK.

Do you ship the 2311-M the same day?

In-stock orders placed by 3 PM EST ship the same day. All orders over $100 ship free by ground with code FREESHIP.

Can I get quantity pricing or buy tax-exempt?

Yes. Apollo offers special rates for businesses and bulk orders. Use Request a quote on this page or call (248) 429-9073.

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