ISUTAMI BEARINGS
en
NSK Develops Highly Reliable Anti-Creep Design Tapered Roller Bearing For Mining Dump Trucks
ISUTAMI BEARINGS

NSK Develops Highly Reliable Anti-Creep Design Tapered Roller Bearing For Mining Dump Trucks

NSK Develops Highly Reliable Anti-Creep Design Tapered Roller Bearing For Mining Dump Trucks
Earlier this month NSK announced that it has developed a highly reliable anti-creep design roller bearing for preventing the axle wear due to inner ring creep*1 that occurs in tapered roller bearings used in the wheels of dump trucks for mining operations. With the development of this product, NSK will contribute to improved maintainability and higher reliability. NSK is targeting one billion yen in sales for this product in 2016. 

1: Inner ring creep: Slip phenomenon that occurs between the inner ring and the axle. Creep can lead to wear between the axle and the bearing bore. 

1. Development background 
With the continuing global trend toward urbanization, global demand for natural resources continues to expand, especially among the BRICs (Brazil, Russia, India and China) and in developing countries. In recent years, this had led to mining operations running 24 hours a day, 365 days a year, which in turn requires equipment that is highly reliable under such extreme conditions. Normal tapered roller bearings are commonly used in the wheels of mining dump trucks, but inner ring creep can easily occur, resulting in axle wear. Repair of the axle wear, in turn, requires frequent maintenance time and extra expense.

As a conventional countermeasure for this, dedicated anti-creep mechanisms have sometimes been used. However, thanks to its advanced analysis technology, testing and state-of-the-art production technology, NSK has produced a solution that involves only a specification change to the bearing itself. The result of this approach is eight times the anti-creep performance of conventional products, reduced axle wear and improved maintainability. Furthermore, NSK employs a special heat treatment process to realize increased resistance to surface fatigue on both the inner and outer ring, resulting in equivalent and greater life compared to conventional products.

2. New product features
(1) Optimal anti-creep design
Through analysis of the tapered roller bearings often used on mining dump trucks, NSK realized that local deformation was occurring in the inner ring when the rolling element passes under a high level of load, which was resulting in inner ring creep. As a result, NSK increased the thickness of the inner ring and increased the number of rollers to reduce the load on the rolling element, thereby reducing local deformation in the inner ring and significantly limiting creep.

(2) NSK long-life technology
NSK applies a special heat treatment process for increased toughness against surface fatigue on both the inner and outer ring, resulting in equivalent and greater life compared to conventional products.

3. New product benefits
This product achieves improved maintainability and higher reliability for mining dump truck wheels, which in turn results in better productivity.
Related News
  • Linear Bearings Application

    Linear Bearings Application

    February 26, 2019Linear Bearings is designed to provide free motion in one dimension. It is widely used in mining, machinery, automotive, textile and chemical industries. ISUTAMI mainly supplies stainless steel linear...view
  • Analysis Of China Bearing Industry In 2011

    Analysis Of China Bearing Industry In 2011

    August 30, 2018OverviewAccording to the statistics supplied by China Bearing Industry Association after their research on the key bearing enterprises, the total sales value of China' s bearing industry in 2011 reach...view
  • Global Bearing Demand To Increase 8.5 Percent Annually Through 2014

    Global Bearing Demand To Increase 8.5 Percent Annually Through 2014

    August 30, 2018Global demand for ball, roller and plain bearings is expected to increase 8.5 percent per year through 2014 to $76 billion. Market gains will be supported by ongoing economic growth and improved fixed...view
  • Application Characteristics of Agricultural Bearings

    Application Characteristics of Agricultural Bearings

    April 4, 2019Bearings play a major role in supporting and reducing friction in machinery. The accuracy and noise of bearings are directly related to the service life of machinery. As an indispensable part of agric...view
  • Introduction to Cheap Rod Ends Joint Bearings

    Introduction to Cheap Rod Ends Joint Bearings

    April 4, 2019(1) SI... Type E is GE... E-type bearing and rod end assembly. The end of the rod has internal threads, and the material is carbon structural steel; there is no lubricating oil groove. It can withstan...view
  • Deep Groove Ball Bearings: Structure, Types And Features

    Deep Groove Ball Bearings: Structure, Types And Features

    February 26, 2019IntroductionDeep groove ball bearing is one of the most widely used bearings in almost all industry machines and components, so it is the most common bearing type. Deep groove ball bearings are also m...view
  • TEL:+86-574-6399-8066
  • FAX:+86-574-6399 8025
  • EMAIL: sales@isutami.com
  • ADDRESS:No.500, North 3rd Ring Road West, Cixi, Ningbo, 315300, China