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

Product Overview

NSK Bearings Deep Groove Ball Bearings 6304

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Deep Groove Ball Bearings/Bearings

6304

Deep Groove Ball Bearing (NSK Authorized Distributor, Taiwan)

Bore d20 mm
Width B15 mm

Product Features

NSK deep groove ball bearing (6304 series), model 6304: 20 mm bore, 52 mm outer diameter, 15 mm width, open type (no shield, no seal)
Basic dynamic load rating Cr 17.5 kN, basic static load rating C0r 7.9 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 16000 min⁻¹ (grease), 19000 min⁻¹ (oil)
Simple, low-friction, high-speed design carrying radial load plus moderate bidirectional axial load — the most widely used bearing type
Nahshon is NSK's authorized distributor in Taiwan — add the part number to your inquiry list for a direct quote

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Product Specifications

Specification	Unit	6304
Series	-	6304 series
Bore d	mm	20
Outer diameter D	mm	52
Width B	mm	15
Min. chamfer r	mm	1.1
Seal / shield	-	open type (no shield, no seal)
Basic dynamic load rating Cr	kN	17.5
Basic static load rating C0r	kN	7.9
Limiting speed (grease)	min⁻¹	16000
Limiting speed (oil)	min⁻¹	19000

Product Description

The 6304 is an NSK deep groove ball bearing from the 6304 series: 20 mm bore, 52 mm outer diameter, 15 mm width, open type (no shield, no seal). Basic dynamic load rating Cr is 17.5 kN and basic static load rating C0r is 7.9 kN (NSK official catalog CAT. No. E1103d). Deep groove ball bearings are simple, low-friction and capable of high speeds while carrying both radial and moderate bidirectional axial loads — the most widely used bearing type, common in motors, gear reducers, pumps, fans and general machinery.

Inquiries & customization

Add this part number to your inquiry list — Nahshon is NSK's authorized distributor in Taiwan and works directly with the factory to confirm specifications, stock and pricing.