MENU EU/ENEU/EN Search NSK - Motion & Control

Introduction

An international manufacturer of angle gears was experiencing frequent and irregular failures on gearboxes fitted to a bus application. NSK investigated this and found the bearing arrangement was complex involving many components from alternative suppliers. As a result, NSK proposed a customised solution with an integrated flanged bearing arrangement which simplified the assembly and gave superior performance. A trial proved this to be successful. The solution was adopted by the customer, resulting in reduced parts needed, consistent performance and guaranteed assembly. This gave the customer a significant cost saving with reduced maintenance costs and improved product performance.

Key Facts

  • Bus gearbox
  • Irregular and unscheduled failures
  • Failures through complex and often incorrect assembly of bearings and components
  • Demand for increased service life
  • Trials with NSK flanged bearing units
  • Approval of NSK product and adaption into production
  • Result: reduction of assembly costs and labour costs

Bus drive gear Bus drive gear
NSK Flanged Bearings for gearboxes NSK Flanged Bearings for gearboxes

Background Information

  • Sector: Power Transmission
  • Country: Germany
  • End product: Bus
  • Application: Drive gear

  • Number of gearboxes: 4,000
  • Approx. lifetime: 27 weeks
  • Problem: failures through complex and often incorrect assembly

Value Proposals

  • NSK’s investigation showed that problems arose during installation of the bearings 
  • NSK training of employees in the installation and removal of bearings
  • Special NSK design solution using flanged bearing units

  • Reduction of assembly costs and labour costs
  • Great improvement in the bearing performance and reliability
  • Cost savings of approx. €37,667 per annum

Product Features

  • 35° contact angle for high axial forces
  • Compact design
  • Special shaft seal with vent hole

  • Negative operating clearance
  • Housing coated against rust
  • Housing sealed by O-ring

Cost Saving Breakdown

Before Cost p.a. NSK Solution Cost p.a.
Bearing costs (incl. parts) €112.000 Costs of NSK flanged bearings €146.000
Assembly costs (4.000 x 466h) €16.333 Assembly costs (4.000 x 133h) €4.666
Labour costs for replacing bearings €60.000 Labour costs for replacing bearings €0
Total Costs €188.333 €150.666

Reference: SS-E-1004

* To save as PDF select PDF as your print device

Cookies on the NSK website

We use cookies to ensure that we give you the best experience on our websites and web applications. We use cookies to ensure that we give you the best experience on our websites and web applications. By continuing without changing your browser settings, we assume you give your consent to receive cookies. However, you can change your browser cookie setting at any time.