Schaeffler India

 
 
 
 
 
Yoke and stud type track rollers, needle roller type

Improved Seal Design

The new plastic axial washer

The new plastic axial washer has two functions:

  • multi-stage sealing
  • improved axial running
 
 

Multi-stage sealing

  • Gap seal (1)
  • Lip seal (2)
  • Axial spring seal (3)
 
 

Axial Running

Improved axial running

  • by optimum sliding contact surface with favourable friction coefficient and low grease consumption
 
Operating Life

The improved axial running increase the mean operating life of the track roller when subjected to misalignment. The previous design without the axial plain washer does not achieve, either with or without relubrication, the mean running time of the new track roller with the axial plain washer with initial greasing but without relubrication.

  • without relubrication (1)
  • with relubrication (2)
  • without relubrication (3)

  • with plastic axial
    plain washer (A)
  • without axial plain washer (B)

y: Mean running time [%]  
 


y: Mean running time [%]
Temperature Behaviour
  • An evaluation of the temperature behaviour of titled bearings shows that the previous version without the axial plain washer maintains its temperature level until failure. The temperature level of the new track roller with the plasticaxial plain washer falls to a lower value after a running-in phase. This places less strain on the grease and extends the operating life.

  • with plastic axial plain washer (A)
  • without axial plain washer (B)