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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 1304

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Self-Aligning Ball Bearings/Bearings

1304

Self-Aligning Ball Bearing

Bore d20 mm
Width B15 mm

Product Features

NSK self-aligning ball bearing (1304 series), model 1304: 20 mm bore, 52 mm OD, 15 mm width, cylindrical bore (no K)
Basic dynamic load rating Cr 13.8 kN, basic static load rating C0r 3.35 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 12000 min⁻¹ (grease), 15000 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 distributor in Taiwan — add the part number to your inquiry list

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Product Specifications

Specification	Unit	1304
Series	-	1304 series
Bore d	mm	20
Outer diameter D	mm	52
Width B	mm	15
Min. chamfer r	mm	1.1
Bore type	-	cylindrical bore (no K)
Basic dynamic load rating Cr	kN	13.8
Basic static load rating C0r	kN	3.35
Limiting speed (grease)	min⁻¹	12000
Limiting speed (oil)	min⁻¹	15000

Product Description

The 1304 is an NSK self-aligning ball bearing from the 1304 series: 20 mm bore, 52 mm outer diameter, 15 mm width, cylindrical bore (no K). Basic dynamic load rating Cr is 13.8 kN and basic static load rating C0r is 3.35 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 distributor in Taiwan and works directly with the factory to confirm specifications, stock and pricing.