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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 2309K

Product Overview

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Self-Aligning Ball Bearings/Bearings

2309K

Self-Aligning Ball Bearing

NSK Distributor Taiwan

Bore d45 mm
Width B36 mm

Product Features

NSK self-aligning ball bearing (2309 series), model 2309K: 45 mm bore, 100 mm OD, 36 mm width, tapered bore (K, 1:12 taper)
Basic dynamic load rating Cr 60.5 kN, basic static load rating C0r 16.7 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 5600 min⁻¹ (grease), 7100 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 2309K is an NSK self-aligning ball bearing from the 2309 series: 45 mm bore, 100 mm outer diameter, 36 mm width, tapered bore (K, 1:12 taper). Basic dynamic load rating Cr is 60.5 kN and basic static load rating C0r is 16.7 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	2309K
Series	-	2309 series
Bore d	mm	45
Outer diameter D	mm	100
Width B	mm	36
Min. chamfer r	mm	1.5
Bore type	-	tapered bore (K, 1:12 taper)
Basic dynamic load rating Cr	kN	60.5
Basic static load rating C0r	kN	16.7
Limiting speed (grease)	min⁻¹	5600
Limiting speed (oil)	min⁻¹	7100

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 2309K 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 2309K to your inquiry list or give us a call, and we'll confirm stock, lead time and quote.