Use cases of Piston with pin hole bushing

The piston pin bore is an area of ​​the piston that bears the load from the piston pin, so it must be strong enough to withstand the extreme pressures exerted on it. Therefore, in high-load diesel engines where the piston is subjected to extreme pressures and high temperatures, a non-homogeneous bushing is used inside the piston pin bore.

Piston sample of engines: OM521, MAN DSC14.13 ,14.15 E2, SEATEK 820 PLUS