L
o
a
d
i
n
g
.
.
.

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

NSK Bearings Tapered Roller Bearings 30310D

Product Overview

L
o
a
d
i
n
g
.
.
.

Tapered Roller Bearings/Bearings

30310D

Tapered Roller Bearing

NSK Distributor Taiwan

Bore d50 mm
Width T29.25 mm

Product Features

NSK tapered roller bearing (30310 series), model 30310D: 50 mm bore, 110 mm OD, 29.25 mm width
Basic dynamic load rating Cr 141 kN, basic static load rating C0r 132 kN (NSK official catalog; current-generation equivalent HR30310DJ, Cr/C0r figures above are taken from that current design)
Limiting speed approx. 3200 min⁻¹ (grease), 4300 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

Quantity

Quick Inquiry

Call UsEmail UsChat on LINE Contact Us About This Product

Product Description

The 30310D is an NSK tapered roller bearing from the 30310 series: 50 mm bore, 110 mm outer diameter, 29.25 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 141 kN and basic static load rating C0r is 132 kN (NSK official catalog CAT. No. E1103d; current-generation equivalent HR30310DJ, 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.

Product Specifications

Specification	Unit	30310D
Series	-	30310 series
Bore d	mm	50
Outer diameter D	mm	110
Width T	mm	29.25
Min. chamfer r	mm	2.5
Basic dynamic load rating Cr	kN	141
Basic static load rating C0r	kN	132
Limiting speed (grease)	min⁻¹	3200
Limiting speed (oil)	min⁻¹	4300

FAQ

What's the difference between the Z, ZZ and DDU suffixes?

Z means a single-side steel shield, ZZ means steel shields on both sides, and DDU means contact rubber seals on both sides. Shields suit general environments and high speeds; rubber seals give better dust and water protection with slightly higher friction torque — choose based on your dust exposure and lubrication method.

When should I choose C3 clearance instead of standard clearance?

For motors or other applications with noticeable temperature rise, or high-speed operation, the inner ring expands from heat and reduces the clearance — choose C3 in that case. Standard clearance is fine for general room-temperature, low-speed use. See Nahshon's technical resources for a clearance selection guide.

Is 30310D in stock in Taiwan? What is the lead time?

Nahshon is the NSK distributor in Taiwan and keeps stock of some commonly used items. Add 30310D to your inquiry list or give us a call, and we'll confirm stock, lead time and quote.

Series Models

Tapered Roller Bearings・30310 series

30305D 30306 30306D 30307 30307D 30308 30308D 30309 30309D 3031030310D（This page）30311 30311D 30312 30312D 30313 30313D 30314 30314D 30315 30315D

View All Tapered Roller Bearings Models →