Schaeffler North America

 
 
 
 
 
 
Balancer shaft drive

Tensioning and guide rails

 

Although balancer shaft drives generally bridge only small distances, they should contain guide rails that calm the chain in the areas between the sprockets. Furthermore, depending on the type of tensioner (linear or rotary tensioner), tensioning rails or pads are used to transmit the force of the tensioning element to the chain. The chain slides with little friction and wear over a plastic sliding layer. Both the available space and the loads acting on the rail are decisive in determining the material to be used for the load-bearing substructure of the rail.

The following options are available:

  • single component load-bearing body made from plastic
  • load-bearing body made from fibre-reinforced plastic
  • load-bearing body made from aluminium
  • load-bearing body made from sheet steel

Finite element calculations and related analyses can be used to achieve maximum rigidity while maintaining minimal cost and design space. Mounting on the engine is matched individually to the conditions present.