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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 1311

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Self-Aligning Ball Bearings/Bearings

1311

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

Bore d55 mm
Width B29 mm

Product Features

NSK self-aligning ball bearing (1311 series), model 1311: 55 mm bore, 120 mm OD, 29 mm width, cylindrical bore (no K)
Basic dynamic load rating Cr 57 kN, basic static load rating C0r 17.9 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 5000 min⁻¹ (grease), 6300 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	1311
Series	-	1311 series
Bore d	mm	55
Outer diameter D	mm	120
Width B	mm	29
Min. chamfer r	mm	2
Bore type	-	cylindrical bore (no K)
Basic dynamic load rating Cr	kN	57
Basic static load rating C0r	kN	17.9
Limiting speed (grease)	min⁻¹	5000
Limiting speed (oil)	min⁻¹	6300

Product Description

The 1311 is an NSK self-aligning ball bearing from the 1311 series: 55 mm bore, 120 mm outer diameter, 29 mm width, cylindrical bore (no K). Basic dynamic load rating Cr is 57 kN and basic static load rating C0r is 17.9 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.