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

NSK Bearings Spherical Roller Bearings 23128

Product Overview

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Spherical Roller Bearings/Bearings

23128

Spherical Roller Bearing

Bore d140 mm
Width B68 mm

Product Features

NSK spherical roller bearing (23128 series), model 23128: 140 mm bore, 225 mm OD, 68 mm width, cylindrical bore (no K)
Basic dynamic load rating Cr 725 kN, basic static load rating C0r 945 kN (NSK official catalog; current-generation equivalent 23128CE4, Cr/C0r figures above are taken from that higher-capacity current design)
Thermal speed rating approx. 2400 min⁻¹, limiting speed (grease) approx. 1200 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	23128
Series	-	23128 series
Bore d	mm	140
Outer diameter D	mm	225
Width B	mm	68
Min. chamfer r	mm	2.1
Bore type	-	cylindrical bore (no K)
Basic dynamic load rating Cr	kN	725
Basic static load rating C0r	kN	945
Thermal speed rating	min⁻¹	2400
Limiting speed (grease)	min⁻¹	1200

Product Description

The 23128 is an NSK spherical roller bearing from the 23128 series: 140 mm bore, 225 mm outer diameter, 68 mm width, cylindrical bore (no K). Basic dynamic load rating Cr is 725 kN and basic static load rating C0r is 945 kN (NSK official catalog CAT. No. E1103d; current-generation equivalent 23128CE4, 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.