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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 1318

Product Overview

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Self-Aligning Ball Bearings/Bearings

1318

Self-Aligning Ball Bearing

NSK Distributor Taiwan

Bore d90 mm
Width B43 mm

Product Features

NSK self-aligning ball bearing (1318 series), model 1318: 90 mm bore, 190 mm OD, 43 mm width, cylindrical bore (no K)
Basic dynamic load rating Cr 129 kN, basic static load rating C0r 44.5 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 3200 min⁻¹ (grease), 3800 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 Description

The 1318 is an NSK self-aligning ball bearing from the 1318 series: 90 mm bore, 190 mm outer diameter, 43 mm width, cylindrical bore (no K). Basic dynamic load rating Cr is 129 kN and basic static load rating C0r is 44.5 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.

Product Specifications

Specification	Unit	1318
Series	-	1318 series
Bore d	mm	90
Outer diameter D	mm	190
Width B	mm	43
Min. chamfer r	mm	3
Bore type	-	cylindrical bore (no K)
Basic dynamic load rating Cr	kN	129
Basic static load rating C0r	kN	44.5
Limiting speed (grease)	min⁻¹	3200
Limiting speed (oil)	min⁻¹	3800

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 1318 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 1318 to your inquiry list or give us a call, and we'll confirm stock, lead time and quote.

Series Models

Self-Aligning Ball Bearings・1318 series

1312K 1313 1313K 1314 1315 1315K 1316 1316K 1317 1317K1318（This page）1318K 1319 1319K 1320 1320K 2202 2203 2204 2205 2205K

View All Self-Aligning Ball Bearings Models →