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Product Series of Automation-Related Precision Ball Screws and Linear Rails – High-Precision Ball Screws

Product Overview

NSK Bearings Self-Aligning Ball Bearings 2311

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Self-Aligning Ball Bearings/Bearings

2311

Self-Aligning Ball Bearing (NSK Authorized Distributor, Taiwan)

Bore d55 mm
Width B43 mm

Product Features

NSK self-aligning ball bearing (2311 series), model 2311: 55 mm bore, 120 mm OD, 43 mm width, cylindrical bore (no K)
Basic dynamic load rating Cr 84 kN, basic static load rating C0r 24 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 4800 min⁻¹ (grease), 6000 min⁻¹ (oil)
Double-row balls on a spherical outer raceway self-align for shaft misalignment; lower friction and higher speed capability than a spherical roller bearing
Nahshon is NSK's authorized distributor in Taiwan — add the part number to your inquiry list

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Product Specifications

Specification	Unit	2311
Series	-	2311 series
Bore d	mm	55
Outer diameter D	mm	120
Width B	mm	43
Min. chamfer r	mm	2
Bore type	-	cylindrical bore (no K)
Basic dynamic load rating Cr	kN	84
Basic static load rating C0r	kN	24
Limiting speed (grease)	min⁻¹	4800
Limiting speed (oil)	min⁻¹	6000

Product Description

The 2311 is an NSK self-aligning ball bearing from the 2311 series: 55 mm bore, 120 mm outer diameter, 43 mm width, cylindrical bore (no K). Basic dynamic load rating Cr is 84 kN and basic static load rating C0r is 24 kN (NSK official catalog CAT. No. E1103d). Self-aligning ball bearings use double-row balls on a spherical outer raceway, self-aligning for minor shaft misalignment with lower friction and higher speed capability than a spherical roller bearing, at the cost of lower radial load capacity.

Inquiries & customization

Add this part number to your inquiry list — Nahshon is NSK's authorized distributor in Taiwan and works directly with the factory to confirm specifications, stock and pricing.