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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 1215K

Product Overview

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Self-Aligning Ball Bearings/Bearings

1215K

Self-Aligning Ball Bearing

NSK Distributor Taiwan

Bore d75 mm
Width B25 mm

Product Features

NSK self-aligning ball bearing (1215 series), model 1215K: 75 mm bore, 130 mm OD, 25 mm width, tapered bore (K, 1:12 taper)
Basic dynamic load rating Cr 43 kN, basic static load rating C0r 15.7 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 4300 min⁻¹ (grease), 5300 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 1215K is an NSK self-aligning ball bearing from the 1215 series: 75 mm bore, 130 mm outer diameter, 25 mm width, tapered bore (K, 1:12 taper). Basic dynamic load rating Cr is 43 kN and basic static load rating C0r is 15.7 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	1215K
Series	-	1215 series
Bore d	mm	75
Outer diameter D	mm	130
Width B	mm	25
Min. chamfer r	mm	1.5
Bore type	-	tapered bore (K, 1:12 taper)
Basic dynamic load rating Cr	kN	43
Basic static load rating C0r	kN	15.7
Limiting speed (grease)	min⁻¹	4300
Limiting speed (oil)	min⁻¹	5300

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 1215K 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 1215K to your inquiry list or give us a call, and we'll confirm stock, lead time and quote.

Series Models

Self-Aligning Ball Bearings・1215 series

1210 1210K 1211 1211K 1212 1212K 1213 1213K 1214 12151215K（This page）1216 1216K 1217 1217K 1218 1218K 1219 1219K 1220 1220K

View All Self-Aligning Ball Bearings Models →