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

NSK Bearings Tapered Roller Bearings 30306D

Product Overview

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Tapered Roller Bearings/Bearings

30306D

Tapered Roller Bearing

Bore d30 mm
Width T20.75 mm

Product Features

NSK tapered roller bearing (30306 series), model 30306D: 30 mm bore, 72 mm OD, 20.75 mm width
Basic dynamic load rating Cr 60.5 kN, basic static load rating C0r 52.5 kN (NSK official catalog; current-generation equivalent HR30306DJ, Cr/C0r figures above are taken from that current design)
Limiting speed approx. 4800 min⁻¹ (grease), 6700 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	30306D
Series	-	30306 series
Bore d	mm	30
Outer diameter D	mm	72
Width T	mm	20.75
Min. chamfer r	mm	1.5
Basic dynamic load rating Cr	kN	60.5
Basic static load rating C0r	kN	52.5
Limiting speed (grease)	min⁻¹	4800
Limiting speed (oil)	min⁻¹	6700

Product Description

The 30306D is an NSK tapered roller bearing from the 30306 series: 30 mm bore, 72 mm outer diameter, 20.75 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 60.5 kN and basic static load rating C0r is 52.5 kN (NSK official catalog CAT. No. E1103d; current-generation equivalent HR30306DJ, 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.