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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 2304

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Self-Aligning Ball Bearings/Bearings

2304

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

Bore d20 mm
Width B21 mm

Product Features

NSK self-aligning ball bearing (2304 series), model 2304: 20 mm bore, 52 mm OD, 21 mm width, cylindrical bore (no K)
Basic dynamic load rating Cr 20.3 kN, basic static load rating C0r 4.7 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 11000 min⁻¹ (grease), 14000 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	2304
Series	-	2304 series
Bore d	mm	20
Outer diameter D	mm	52
Width B	mm	21
Min. chamfer r	mm	1.1
Bore type	-	cylindrical bore (no K)
Basic dynamic load rating Cr	kN	20.3
Basic static load rating C0r	kN	4.7
Limiting speed (grease)	min⁻¹	11000
Limiting speed (oil)	min⁻¹	14000

Product Description

The 2304 is an NSK self-aligning ball bearing from the 2304 series: 20 mm bore, 52 mm outer diameter, 21 mm width, cylindrical bore (no K). Basic dynamic load rating Cr is 20.3 kN and basic static load rating C0r is 4.7 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.