The connecting rod is best known through its use in internal combustion engines. It is connected by bearings to the piston and the crankshaft. The bearing is a device supporting a mechanical element and providing its movement relatively to another element with a minimum power loss. The rotating components of internal combustion engines are equipped with sleeve type sliding bearings. The reciprocating engines are characterised by cycling loading of their parts including bearings. These loads are a result of alternating pressure of combustion gases in the cylinders. The bearings protect and support the conrod and crankshaft and allow the parts to spin freely with the minimum of friction.
Characteristics of the Conrod bearing
Connecting rod bearings provide rotating motion of the crank within the connecting rod. This transmits cycling loads applied to the piston. The connecting rod bearings are mounted in the big end side of the connecting rod and consist of two halves for installation purposes. They are sliding bearings as these can provide a distribution of the applied load over a relatively wide area. Roller bearings with their relatively small area of load on the ring surface are not suitable for the internal combustion engine. The manufacturer has purposely chosen the size and materials which best work in their engine. This will differ from manufacturer to manufacturer as the engine components differ widely. Always replace any engine components with reliable quality parts.
Symptoms of failure of conrod bearings
Replacing the connecting rod bearings timeously can save your engine from expensive repairs. When worn or damaged they can provoke a dull banging noise eventually rising to a hard banging sound. This happens when the big ends have no bearing material to work on. The rod knock is a sure indication that the bearings are failing and need immediate replacement. Failure to do so will result in the engine ripping itself apart and the engine will need to be replaced as the damage can be so severe that repair is not an option. To order a KRP3022 IEP Conrod Bearing, contact IEP Power Products today.