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

NSK Bearings Self-Aligning Ball Bearings 2308

Product Overview

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Self-Aligning Ball Bearings/Bearings

2308

Self-Aligning Ball Bearing

Bore d40 mm
Width B33 mm

Product Features

NSK self-aligning ball bearing (2308 series), model 2308: 40 mm bore, 90 mm OD, 33 mm width, cylindrical bore (no K)
Basic dynamic load rating Cr 50 kN, basic static load rating C0r 13.5 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 6300 min⁻¹ (grease), 8000 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	2308
Series	-	2308 series
Bore d	mm	40
Outer diameter D	mm	90
Width B	mm	33
Min. chamfer r	mm	1.5
Bore type	-	cylindrical bore (no K)
Basic dynamic load rating Cr	kN	50
Basic static load rating C0r	kN	13.5
Limiting speed (grease)	min⁻¹	6300
Limiting speed (oil)	min⁻¹	8000

Product Description

The 2308 is an NSK self-aligning ball bearing from the 2308 series: 40 mm bore, 90 mm outer diameter, 33 mm width, cylindrical bore (no K). Basic dynamic load rating Cr is 50 kN and basic static load rating C0r is 13.5 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.