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

NSK Bearings Cylindrical Roller Bearings N307W

Product Overview

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Cylindrical Roller Bearings/Bearings

N307W

Cylindrical Roller Bearing

Bore d35 mm
Width B21 mm

Product Features

NSK cylindrical roller bearing (N307 series), model N307W: 35 mm bore, 80 mm OD, 21 mm width, N type, W pressed-steel cage
Basic dynamic load rating Cr 61 kN, basic static load rating C0r 47 kN (NSK official catalog)
Limiting speed approx. 6300 min⁻¹ (grease), 7500 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	N307W
Series	-	N307 series (N type)
Bore d	mm	35
Outer diameter D	mm	80
Width B	mm	21
Min. chamfer r	mm	1.5
Cage	-	W (pressed steel)
Basic dynamic load rating Cr	kN	61
Basic static load rating C0r	kN	47
Limiting speed (grease)	min⁻¹	6300
Limiting speed (oil)	min⁻¹	7500

Product Description

The N307W is an NSK cylindrical roller bearing from the N307 series (N type): 35 mm bore, 80 mm outer diameter, 21 mm width, W pressed-steel cage. Basic dynamic load rating Cr is 61 kN and basic static load rating C0r is 47 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.