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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 2315K

Product Overview

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Self-Aligning Ball Bearings/Bearings

2315K

Self-Aligning Ball Bearing

NSK Distributor Taiwan

Bore d75 mm
Width B55 mm

Product Features

NSK self-aligning ball bearing (2315 series), model 2315K: 75 mm bore, 160 mm OD, 55 mm width, tapered bore (K, 1:12 taper)
Basic dynamic load rating Cr 137 kN, basic static load rating C0r 43 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 3400 min⁻¹ (grease), 4300 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 2315K is an NSK self-aligning ball bearing from the 2315 series: 75 mm bore, 160 mm outer diameter, 55 mm width, tapered bore (K, 1:12 taper). Basic dynamic load rating Cr is 137 kN and basic static load rating C0r is 43 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	2315K
Series	-	2315 series
Bore d	mm	75
Outer diameter D	mm	160
Width B	mm	55
Min. chamfer r	mm	2.1
Bore type	-	tapered bore (K, 1:12 taper)
Basic dynamic load rating Cr	kN	137
Basic static load rating C0r	kN	43
Limiting speed (grease)	min⁻¹	3400
Limiting speed (oil)	min⁻¹	4300

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 2315K 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 2315K to your inquiry list or give us a call, and we'll confirm stock, lead time and quote.