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

NSK Bearings Spherical Roller Bearings 22308K

Product Overview

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Spherical Roller Bearings/Bearings

22308K

Spherical Roller Bearing

NSK Distributor Taiwan

Bore d40 mm
Width B33 mm

Product Features

NSK spherical roller bearing (22308 series), model 22308K: 40 mm bore, 90 mm OD, 33 mm width, tapered bore (K, 1:12 taper)
Basic dynamic load rating Cr 170 kN, basic static load rating C0r 153 kN (NSK official catalog; current-generation equivalent 22308EAKE4, Cr/C0r figures above are taken from that higher-capacity current design)
Thermal speed rating approx. 5600 min⁻¹, limiting speed (grease) approx. 5300 min⁻¹
Double-row rollers on a spherical outer raceway self-align for misalignment and shaft deflection — suited to long shafts and heavy-duty drives
Nahshon is NSK's distributor in Taiwan — add the part number to your inquiry list

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Product Description

The 22308K is an NSK spherical roller bearing from the 22308 series: 40 mm bore, 90 mm outer diameter, 33 mm width, tapered bore (K, 1:12 taper). Basic dynamic load rating Cr is 170 kN and basic static load rating C0r is 153 kN (NSK official catalog CAT. No. E1103d; current-generation equivalent 22308EAKE4, Cr/C0r figures above are taken from that higher-capacity current design). Spherical roller bearings use double-row rollers on a spherical outer raceway that self-aligns for misalignment and shaft deflection while carrying heavy radial and bidirectional axial loads — common in gear reducers, conveyor rollers, paper machinery and wind-turbine main shafts.

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	22308K
Series	-	22308 series
Bore d	mm	40
Outer diameter D	mm	90
Width B	mm	33
Min. chamfer r	mm	1.5
Bore type	-	tapered bore (K, 1:12 taper)
Basic dynamic load rating Cr	kN	170
Basic static load rating C0r	kN	153
Thermal speed rating	min⁻¹	5600
Limiting speed (grease)	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 22308K 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 22308K to your inquiry list or give us a call, and we'll confirm stock, lead time and quote.

Series Models

Spherical Roller Bearings・22308 series

22228K 22230 22230K 22232 22232K 22234 22234K 22236 22236K 2230822308K（This page）22309 22309K 22310 22310K 22311 22311K 22312 22312K 22313 22313K

View All Spherical Roller Bearings Models →