Rocker arm / Roller cam follower

Precise control of inlet and outlet valves is crucial for the performance and efficiency of modern combustion engines. In automotive technology, four valves per cylinder are usually used – two for the intake of fresh air or air-fuel mixture, two for the exhaust gas outlet. Depending on the engine concept, rocker arms or (roller) cam followers are used for valve operation. The aim is to minimise friction and wear and tear for moving components. The valve clearance can be adjusted precisely using built-in setting discs to ensure a stable combustion process and prevent engine damage.
Component with locating bore and bearing bore for precise positioning and support

Key features

  1. Precision fit bore
  2. Bearing bore

PROCESS CONDITIONS
  • Diameter tolerances in H7 range
  • Surface requirement in Rz 3 μm range
  • Circularity in range of few μm
  • Fluctuating casting quality

1. Precision fit bore

Tools for precision finishing of fitted bores and holes.

Finishing 
Indexable insert fine boring tool

  • Guided fine boring tool with adjustable inserts for the most stringent Quality requirements.

or

HPR replaceable head reamer

  • Multi-blade regrindable reamer with HFS connection for a simplified tool change.

2. Bearing bore

Tools for precision finishing of bearing bores

Finishing 
HPR replaceable head reamer

  • Multi-blade regrindable replaceable-head reamer with HFS connection for rapid tool change in the machine.

or


Indexable insert fine boring tool

  • Guide pad and adjustable indexable inserts for the most stringent quality requirements.