Development aims

SA253 has better wear resistance and compatible with engines with cast iron shaft.

Development concept

Improved wear resistance through the Si particle coarsening
Improved fatigue resistance by increasing the strength of the aluminum alloy lining


Increment of strengthening components compensates for the decrease of fatigue resistance caused by the Si particle coarsening.


Resistance wear

Seizure resistance

Shaft material: Hardened shaft

     Non-hardened shaft

Application example

  • Connecting rod bearing
  • Main bearing
  • Crankwasher