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

NSK Bearings Spherical Roller Bearings 22228

Product Overview

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Spherical Roller Bearings/Bearings

22228

Spherical Roller Bearing

Bore d140 mm
Width B68 mm

Product Features

NSK spherical roller bearing (22228 series), model 22228: 140 mm bore, 250 mm OD, 68 mm width, cylindrical bore (no K)
Basic dynamic load rating Cr 645 kN, basic static load rating C0r 930 kN (NSK official catalog; current-generation equivalent 22228CDE4, Cr/C0r figures above are taken from that higher-capacity current design)
Thermal speed rating approx. 2400 min⁻¹, limiting speed (grease) approx. 1400 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 Specifications

Specification	Unit	22228
Series	-	22228 series
Bore d	mm	140
Outer diameter D	mm	250
Width B	mm	68
Min. chamfer r	mm	3
Bore type	-	cylindrical bore (no K)
Basic dynamic load rating Cr	kN	645
Basic static load rating C0r	kN	930
Thermal speed rating	min⁻¹	2400
Limiting speed (grease)	min⁻¹	1400

Product Description

The 22228 is an NSK spherical roller bearing from the 22228 series: 140 mm bore, 250 mm outer diameter, 68 mm width, cylindrical bore (no K). Basic dynamic load rating Cr is 645 kN and basic static load rating C0r is 930 kN (NSK official catalog CAT. No. E1103d; current-generation equivalent 22228CDE4, 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.