Saturday 19/10/2019

Bookmark and Share
 
 
Daily News
  PandCT RSS Daily News feed
New NSK bearings for rolling mills offer long service life

7 October 2019

NSK has developed its latest four-row tapered roller bearings for rolling mills to offer a number of class-leading performance and environmental benefits. The work roll bearings use newly developed, water-resistant grease that is fully sealed into the confines of the bearing. With the new bearings, service life is typically doubled in challenging conditions such as those where there is a high risk of water penetration. In addition, the sealed design means that grease consumption is far less than that exhibited by a conventional 'open' bearing, while the risk of contaminating the environment is greatly reduced.

NSK's new long-life, four-row, sealed tapered roller bearings with new AQGRD grease deliver on a primary demand of rolling mill applications: the requirement for work roll bearings that last. Rolling mills typically use pairs of work rolls to roll slabs of steel or other metals into specific shapes, such as sheets. This work is particularly demanding on the bearings, which have to bear heavy loads at high speeds and temperatures, and endure constant exposure to water sprays and metal particles.

These severe operating conditions can lead to premature bearing failure due to flaws such as flaking. Flaking occurs when fatigue causes small pieces of bearing material to separate from the smooth surface of the raceway. This effect creates coarse regions that eventually make the bearing inoperable.

The principal innovation designed to help combat such issues is the newly developed AQGRD water-resistant grease. Optimised grease composition creates a thicker oil film and protective layer between the raceway and rollers, inhibiting direct contact without lubrication, as well as preventing corrosion. Rust prevention is important as harmful defects such as flaking, which compromise bearing life, stem from areas of corrosion. Ultimately, longer service life reduces maintenance costs and increases operational efficiency. Moreover, since the bearings need less frequent replacement, they help to minimise carbon footprint and resource consumption.

Aside from the long service life benefits, reduced material and energy consumption will also result in relation to the replacement cycles of conventional bearings, which in turn helps to lower CO2 emissions.

Moving forward, NSK will continue developing and manufacturing products geared toward realising a sustainable society.

For more information, please contact:

Marie-Dominique Pilath
NSK Deutschland GmbH
Harkortstraße 15
40880 Ratingen
Germany
Tel:  +49 2102 4811280
Email: pilath-m@nsk.com
Web:  www.
PandCT.com are not responsible for the content of submitted or externally produced articles and images.
Click here to email PandCT about any errors or omissions contained within this article.
     
Send this page
To send this page to a colleague or friend,
fill in the email addresses below...
Your email address
Their email address:
Page to be sent: shownews.asp?ID=54450

Company gateway pages
for NSK Europe Ltd:
FREE Information on the products in this article
To request more information,
fill in your email address below.
Your email address
 
     
Bookmark and Share
Product categories: Accelerometers | Actuators | Agitators | Analysers | Bearings | Compressors | Controllers | Conveyors | Drives | Enclosures | Flowmeters | Heat Exchangers | Motors | Pumps | Relays | Sensors | Transducers | Transmitters | Valves | Weighing
(c) Copyright 1999-2019 Process and Control Today Ltd  |  Reg. no 3733110  |  Email Editor  |  Email Webmaster  |  Sitemap  |  Privacy Policy