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

NSK Bearings Angular Contact Ball Bearings 5309

Product Overview

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Angular Contact Ball Bearings/Bearings

5309

Angular Contact Ball Bearing

NSK Distributor Taiwan

Bore d45 mm
Width B39.7 mm

Product Features

NSK double-row angular contact ball bearing (5309 series), model 5309: 45 mm bore, 100 mm OD, 39.7 mm width, open type
Basic dynamic load rating Cr 75.5 kN, basic static load rating C0r 51 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 4500 min⁻¹ (grease), 6000 min⁻¹ (oil)
Inner and outer rings are each integrated into one piece, equivalent to two back-to-back single-row bearings — carries bidirectional axial load and moment loads as a single unit
Nahshon is NSK's distributor in Taiwan — add the part number to your inquiry list

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Product Description

The 5309 is an NSK double-row angular contact ball bearing from the 5309 series: 45 mm bore, 100 mm outer diameter, 39.7 mm width, open type. Basic dynamic load rating Cr is 75.5 kN and basic static load rating C0r is 51 kN (NSK official catalog CAT. No. E1103d). Inner and outer rings are each integrated into one piece, equivalent to a back-to-back pair of single-row angular contact bearings — a single unit carries bidirectional axial load, radial load and moment loading, common in machine-tool spindles, printing machinery and pumps as a fixed-end bearing.

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	5309
Series	-	5309 series (double row)
Bore d	mm	45
Outer diameter D	mm	100
Width B	mm	39.7
Min. chamfer r	mm	1.5
Type	-	Open
Basic dynamic load rating Cr	kN	75.5
Basic static load rating C0r	kN	51
Limiting speed (grease)	min⁻¹	4500
Limiting speed (oil)	min⁻¹	6000

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 5309 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 5309 to your inquiry list or give us a call, and we'll confirm stock, lead time and quote.

Series Models

Angular Contact Ball Bearings・5309 series (double row)

5211 5212 5213 5214 5215 5304 5305 5306 5307 53085309（This page）5310 5311 5312 7200BW 7201BW 7202BW 7203BW 7204BW 7205BW 7206BW

View All Angular Contact Ball Bearings Models →