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

NSK Bearings Tapered Roller Bearings 30320

Product Overview

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Tapered Roller Bearings/Bearings

30320

Tapered Roller Bearing

NSK Distributor Taiwan

Bore d100 mm
Width T51.5 mm

Product Features

NSK tapered roller bearing (30320 series), model 30320: 100 mm bore, 215 mm OD, 51.5 mm width
Basic dynamic load rating Cr 520 kN, basic static load rating C0r 525 kN (NSK official catalog; current-generation equivalent HR30320J, Cr/C0r figures above are taken from that current design)
Limiting speed approx. 1700 min⁻¹ (grease), 2400 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 Description

The 30320 is an NSK tapered roller bearing from the 30320 series: 100 mm bore, 215 mm outer diameter, 51.5 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 520 kN and basic static load rating C0r is 525 kN (NSK official catalog CAT. No. E1103d; current-generation equivalent HR30320J, 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	30320
Series	-	30320 series
Bore d	mm	100
Outer diameter D	mm	215
Width T	mm	51.5
Min. chamfer r	mm	4
Basic dynamic load rating Cr	kN	520
Basic static load rating C0r	kN	525
Limiting speed (grease)	min⁻¹	1700
Limiting speed (oil)	min⁻¹	2400

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 30320 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 30320 to your inquiry list or give us a call, and we'll confirm stock, lead time and quote.

Series Models

Tapered Roller Bearings・30320 series

30313D 30314 30314D 30315 30315D 30316 30316D 30317 30318 3031930320（This page）32004X 32005X 32006X 32007X 32008X 32009X 32010X 32011X 32012X 32013X

View All Tapered Roller Bearings Models →