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

NSK Bearings Spherical Roller Bearings 23218

Product Overview

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Spherical Roller Bearings/Bearings

23218

Spherical Roller Bearing

Bore d90 mm
Width B52.4 mm

Product Features

NSK spherical roller bearing (23218 series), model 23218: 90 mm bore, 160 mm OD, 52.4 mm width, cylindrical bore (no K)
Basic dynamic load rating Cr 340 kN, basic static load rating C0r 490 kN (NSK official catalog; current-generation equivalent 23218CE4, Cr/C0r figures above are taken from that higher-capacity current design)
Thermal speed rating approx. 2800 min⁻¹, limiting speed (grease) approx. 1800 min⁻¹
Double-row rollers on a spherical outer raceway self-align for misalignment and shaft deflection — suited to long shafts and heavy-duty drives
Nahshon is NSK's distributor in Taiwan — add the part number to your inquiry list

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Product Specifications

Specification	Unit	23218
Series	-	23218 series
Bore d	mm	90
Outer diameter D	mm	160
Width B	mm	52.4
Min. chamfer r	mm	2
Bore type	-	cylindrical bore (no K)
Basic dynamic load rating Cr	kN	340
Basic static load rating C0r	kN	490
Thermal speed rating	min⁻¹	2800
Limiting speed (grease)	min⁻¹	1800

Product Description

The 23218 is an NSK spherical roller bearing from the 23218 series: 90 mm bore, 160 mm outer diameter, 52.4 mm width, cylindrical bore (no K). Basic dynamic load rating Cr is 340 kN and basic static load rating C0r is 490 kN (NSK official catalog CAT. No. E1103d; current-generation equivalent 23218CE4, Cr/C0r figures above are taken from that higher-capacity current design). Spherical roller bearings use double-row rollers on a spherical outer raceway that self-aligns for misalignment and shaft deflection while carrying heavy radial and bidirectional axial loads — common in gear reducers, conveyor rollers, paper machinery and wind-turbine main shafts.

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.