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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 1211

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Self-Aligning Ball Bearings/Bearings

1211

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

Bore d55 mm
Width B21 mm

Product Features

NSK self-aligning ball bearing (1211 series), model 1211: 55 mm bore, 100 mm OD, 21 mm width, cylindrical bore (no K)
Basic dynamic load rating Cr 29.6 kN, basic static load rating C0r 10 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 6000 min⁻¹ (grease), 7100 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	1211
Series	-	1211 series
Bore d	mm	55
Outer diameter D	mm	100
Width B	mm	21
Min. chamfer r	mm	1.5
Bore type	-	cylindrical bore (no K)
Basic dynamic load rating Cr	kN	29.6
Basic static load rating C0r	kN	10
Limiting speed (grease)	min⁻¹	6000
Limiting speed (oil)	min⁻¹	7100

Product Description

The 1211 is an NSK self-aligning ball bearing from the 1211 series: 55 mm bore, 100 mm outer diameter, 21 mm width, cylindrical bore (no K). Basic dynamic load rating Cr is 29.6 kN and basic static load rating C0r is 10 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.