Schaeffler North America

 
 
 
 
 
 
Components with mechanical valve lash setting

Mechanical tappet

 
  • Steel body
  • Valve directly activated
  • Valve lash mechanically adjusted
 
 

Mechanical tappet with top shim

  • Loosely inserted in tappet body
  • Supplied in various thicknesses
  • Material and heat treatment can be selected as required

Valve lash is adjusted by means of the shim thickness.

 
 

Mechanical tappet with bottom shim

  • Defined lash between cam base circle and tappet body outside surface - due to shim thickness
  • Very low tappet mass > reduced valve spring forces and thus frictional power
  • Large contact surface for cam
 
 

Mechanical tappet with graded base thickness

Shim:

  • Valve lash adjusted by means of the tappet base thickness
  • Very low tappet mass
  • Reduced valve spring forces and thus frictional power
  • Large contact surface for cam
  • Very economical manufacture feasible