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

NSK Bearings Tapered Roller Bearings 32311

Product Overview

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Tapered Roller Bearings/Bearings

32311

Tapered Roller Bearing

Bore d55 mm
Width T45.5 mm

Product Features

NSK tapered roller bearing (32311 series), model 32311: 55 mm bore, 120 mm OD, 45.5 mm width
Basic dynamic load rating Cr 251 kN, basic static load rating C0r 258 kN (NSK official catalog; current-generation equivalent HR32311J, Cr/C0r figures above are taken from that current design)
Limiting speed approx. 3200 min⁻¹ (grease), 4300 min⁻¹ (oil)
Carries combined radial load and axial load in one direction; inner and outer rings are separable for easy mounting and service
Nahshon is NSK's distributor in Taiwan — add the part number to your inquiry list

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Product Specifications

Specification	Unit	32311
Series	-	32311 series
Bore d	mm	55
Outer diameter D	mm	120
Width T	mm	45.5
Min. chamfer r	mm	2.5
Basic dynamic load rating Cr	kN	251
Basic static load rating C0r	kN	258
Limiting speed (grease)	min⁻¹	3200
Limiting speed (oil)	min⁻¹	4300

Product Description

The 32311 is an NSK tapered roller bearing from the 32311 series: 55 mm bore, 120 mm outer diameter, 45.5 mm width. Tapered roller bearings use a tapered inner ring, rollers and outer raceway so a single bearing carries combined radial load and axial load in one direction; inner and outer rings are separable, giving flexible mounting and clearance adjustment. Basic dynamic load rating Cr is 251 kN and basic static load rating C0r is 258 kN (NSK official catalog CAT. No. E1103d; current-generation equivalent HR32311J, Cr/C0r figures above are taken from that current design).

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.