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

NSK Bearings Spherical Roller Bearings 22318

Product Overview

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Spherical Roller Bearings/Bearings

22318

Spherical Roller Bearing

NSK Distributor Taiwan

Bore d90 mm
Width B64 mm

Product Features

NSK spherical roller bearing (22318 series), model 22318: 90 mm bore, 190 mm OD, 64 mm width, cylindrical bore (no K)
Basic dynamic load rating Cr 665 kN, basic static load rating C0r 705 kN (NSK official catalog; current-generation equivalent 22318EAE4, Cr/C0r figures above are taken from that higher-capacity current design)
Thermal speed rating approx. 2800 min⁻¹, limiting speed (grease) approx. 2400 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 Description

The 22318 is an NSK spherical roller bearing from the 22318 series: 90 mm bore, 190 mm outer diameter, 64 mm width, cylindrical bore (no K). Basic dynamic load rating Cr is 665 kN and basic static load rating C0r is 705 kN (NSK official catalog CAT. No. E1103d; current-generation equivalent 22318EAE4, 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.

Product Specifications

Specification	Unit	22318
Series	-	22318 series
Bore d	mm	90
Outer diameter D	mm	190
Width B	mm	64
Min. chamfer r	mm	3
Bore type	-	cylindrical bore (no K)
Basic dynamic load rating Cr	kN	665
Basic static load rating C0r	kN	705
Thermal speed rating	min⁻¹	2800
Limiting speed (grease)	min⁻¹	2400

FAQ

What's the difference between the Z, ZZ and DDU suffixes?

Z means a single-side steel shield, ZZ means steel shields on both sides, and DDU means contact rubber seals on both sides. Shields suit general environments and high speeds; rubber seals give better dust and water protection with slightly higher friction torque — choose based on your dust exposure and lubrication method.

When should I choose C3 clearance instead of standard clearance?

For motors or other applications with noticeable temperature rise, or high-speed operation, the inner ring expands from heat and reduces the clearance — choose C3 in that case. Standard clearance is fine for general room-temperature, low-speed use. See Nahshon's technical resources for a clearance selection guide.

Is 22318 in stock in Taiwan? What is the lead time?

Nahshon is the NSK distributor in Taiwan and keeps stock of some commonly used items. Add 22318 to your inquiry list or give us a call, and we'll confirm stock, lead time and quote.

Series Models

Spherical Roller Bearings・22318 series

22313 22313K 22314 22314K 22315 22315K 22316 22316K 22317 22317K22318（This page）22318K 22319 22319K 22320

View All Spherical Roller Bearings Models →