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

NSK Bearings Tapered Roller Bearings 30304

Product Overview

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Tapered Roller Bearings/Bearings

30304

Tapered Roller Bearing

Bore d20 mm
Width T16.25 mm

Product Features

NSK tapered roller bearing (30304 series), model 30304: 20 mm bore, 52 mm OD, 16.25 mm width
Basic dynamic load rating Cr 43 kN, basic static load rating C0r 33.5 kN (NSK official catalog; current-generation equivalent HR30304J, Cr/C0r figures above are taken from that current design)
Limiting speed approx. 7500 min⁻¹ (grease), 10000 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	30304
Series	-	30304 series
Bore d	mm	20
Outer diameter D	mm	52
Width T	mm	16.25
Min. chamfer r	mm	1.5
Basic dynamic load rating Cr	kN	43
Basic static load rating C0r	kN	33.5
Limiting speed (grease)	min⁻¹	7500
Limiting speed (oil)	min⁻¹	10000

Product Description

The 30304 is an NSK tapered roller bearing from the 30304 series: 20 mm bore, 52 mm outer diameter, 16.25 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 43 kN and basic static load rating C0r is 33.5 kN (NSK official catalog CAT. No. E1103d; current-generation equivalent HR30304J, 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.