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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 2308K

Product Overview

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Self-Aligning Ball Bearings/Bearings

2308K

Self-Aligning Ball Bearing

Bore d40 mm
Width B33 mm

Product Features

NSK self-aligning ball bearing (2308 series), model 2308K: 40 mm bore, 90 mm OD, 33 mm width, tapered bore (K, 1:12 taper)
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	2308K
Series	-	2308 series
Bore d	mm	40
Outer diameter D	mm	90
Width B	mm	33
Min. chamfer r	mm	1.5
Bore type	-	tapered bore (K, 1:12 taper)
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 2308K is an NSK self-aligning ball bearing from the 2308 series: 40 mm bore, 90 mm outer diameter, 33 mm width, tapered bore (K, 1:12 taper). 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.