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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 5306

Product Overview

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Angular Contact Ball Bearings/Bearings

5306

Angular Contact Ball Bearing

NSK Distributor Taiwan

Bore d30 mm
Width B30.2 mm

Product Features

NSK double-row angular contact ball bearing (5306 series), model 5306: 30 mm bore, 72 mm OD, 30.2 mm width, open type
Basic dynamic load rating Cr 45 kN, basic static load rating C0r 28.1 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 6300 min⁻¹ (grease), 8500 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 5306 is an NSK double-row angular contact ball bearing from the 5306 series: 30 mm bore, 72 mm outer diameter, 30.2 mm width, open type. Basic dynamic load rating Cr is 45 kN and basic static load rating C0r is 28.1 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	5306
Series	-	5306 series (double row)
Bore d	mm	30
Outer diameter D	mm	72
Width B	mm	30.2
Min. chamfer r	mm	1.1
Type	-	Open
Basic dynamic load rating Cr	kN	45
Basic static load rating C0r	kN	28.1
Limiting speed (grease)	min⁻¹	6300
Limiting speed (oil)	min⁻¹	8500

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 5306 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 5306 to your inquiry list or give us a call, and we'll confirm stock, lead time and quote.

Series Models

Angular Contact Ball Bearings・5306 series (double row)

5208 5209 5210 5211 5212 5213 5214 5215 5304 53055306（This page）5307 5308 5309 5310 5311 5312 7200BW 7201BW 7202BW 7203BW

View All Angular Contact Ball Bearings Models →