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

NSK Bearings Cylindrical Roller Bearings N304W

Product Overview

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Cylindrical Roller Bearings/Bearings

N304W

Cylindrical Roller Bearing

Bore d20 mm
Width B15 mm

Product Features

NSK cylindrical roller bearing (N304 series), model N304W: 20 mm bore, 52 mm OD, 15 mm width, N type, W pressed-steel cage
Basic dynamic load rating Cr 26.3 kN, basic static load rating C0r 17.3 kN (NSK official catalog)
Limiting speed approx. 10000 min⁻¹ (grease), 12000 min⁻¹ (oil)
no ribs on outer ring, two ribs on inner ring; outer 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	N304W
Series	-	N304 series (N type)
Bore d	mm	20
Outer diameter D	mm	52
Width B	mm	15
Min. chamfer r	mm	1.1
Cage	-	W (pressed steel)
Basic dynamic load rating Cr	kN	26.3
Basic static load rating C0r	kN	17.3
Limiting speed (grease)	min⁻¹	10000
Limiting speed (oil)	min⁻¹	12000

Product Description

The N304W is an NSK cylindrical roller bearing from the N304 series (N type): 20 mm bore, 52 mm outer diameter, 15 mm width, W pressed-steel cage. Basic dynamic load rating Cr is 26.3 kN and basic static load rating C0r is 17.3 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.