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

NSK Bearings Tapered Roller Bearings 30312D

Product Overview

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Tapered Roller Bearings/Bearings

30312D

Tapered Roller Bearing

Bore d60 mm
Width T33.5 mm

Product Features

NSK tapered roller bearing (30312 series), model 30312D: 60 mm bore, 130 mm OD, 33.5 mm width
Basic dynamic load rating Cr 186 kN, basic static load rating C0r 177 kN (NSK official catalog; current-generation equivalent HR30312DJ, Cr/C0r figures above are taken from that current design)
Limiting speed approx. 2600 min⁻¹ (grease), 3800 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	30312D
Series	-	30312 series
Bore d	mm	60
Outer diameter D	mm	130
Width T	mm	33.5
Min. chamfer r	mm	3
Basic dynamic load rating Cr	kN	186
Basic static load rating C0r	kN	177
Limiting speed (grease)	min⁻¹	2600
Limiting speed (oil)	min⁻¹	3800

Product Description

The 30312D is an NSK tapered roller bearing from the 30312 series: 60 mm bore, 130 mm outer diameter, 33.5 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 186 kN and basic static load rating C0r is 177 kN (NSK official catalog CAT. No. E1103d; current-generation equivalent HR30312DJ, 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.