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

NSK Bearings Cylindrical Roller Bearings NU312W

Product Overview

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Cylindrical Roller Bearings/Bearings

NU312W

Cylindrical Roller Bearing

Bore d60 mm
Width B31 mm

Product Features

NSK cylindrical roller bearing (NU312 series), model NU312W: 60 mm bore, 130 mm OD, 31 mm width, NU type, W pressed-steel cage
Basic dynamic load rating Cr 152 kN, basic static load rating C0r 126 kN (NSK official catalog)
Limiting speed approx. 3800 min⁻¹ (grease), 4500 min⁻¹ (oil)
no ribs on inner ring, two ribs on outer ring; inner ring can float axially, no axial load capacity; line contact between rollers and raceways gives high radial load capacity and low friction, suited to high-speed 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	NU312W
Series	-	NU312 series (NU type)
Bore d	mm	60
Outer diameter D	mm	130
Width B	mm	31
Min. chamfer r	mm	2.1
Cage	-	W (pressed steel)
Basic dynamic load rating Cr	kN	152
Basic static load rating C0r	kN	126
Limiting speed (grease)	min⁻¹	3800
Limiting speed (oil)	min⁻¹	4500

Product Description

The NU312W is an NSK cylindrical roller bearing from the NU312 series (NU type): 60 mm bore, 130 mm outer diameter, 31 mm width, W pressed-steel cage. Basic dynamic load rating Cr is 152 kN and basic static load rating C0r is 126 kN (NSK official catalog CAT. No. E1103d). Cylindrical roller bearings use line contact between rollers and raceways for high radial load capacity and low friction — suited to high-speed, heavy-duty drives such as gear reducers, motors and machine-tool spindles.

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.