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Connecting rods (rod, crankpin, axial)

Frequently asked questions

They are made from metal alloys in multiple layers. The base is usually steel for structural strength, over which friction-resistant layers of aluminum, copper, or lead are applied.

Wear is generally caused by poor lubrication, contaminated oil, overheating, or heavy loads. Combustion imbalances or sealing losses at the level of cylinder heads and gaskets for machinery accelerate wear.

They are replaced during major repairs, regrinding, or when knocking, filing, and low pressure occur, with inspection being necessary after a few thousand hours of operation, depending on the manufacturer’s recommendations and working conditions.