CRANKSHAFT MACHINING

Within our machine park, we have machines manufactured by Berco and AZ, with which we process crankshafts up to 3.5 m in working length.

What is a crankshaft and what is its role?

Crankshaft is a rotating shaft that converts the rectilinear movement of the pistons into a circular motion and transmits their power to the transmission system (gearbox). The pistons are connected to the crankshaft via a connecting rod, and the crankshaft itself is installed in the engine block.

How does a hazard occur and how is it resolved?

Since the crankshaft represents the “backbone” of an engine, any kind of hazard may lead to serious issues to the engine. Crankshaft failures are mainly caused by poor engine lubrication, but also by operating at very high engine temperatures. Depending on the degree of damage, the crankshaft can be processed to an oversize. This specifically means that the damaged layer of the crankshaft sleeves is removed through the grinding process, and that same layer is replaced by the installation of adequate reinforced bearings.

Since the crankshaft represents the “backbone” of an engine, any kind of hazard may lead to serious issues to the engine. Crankshaft failures are mainly caused by poor engine lubrication, but also by operating at very high engine temperatures. Depending on the degree of damage, the crankshaft can be processed to an oversize. This specifically means that the damaged layer of the crankshaft sleeves is removed through the grinding process, and that same layer is replaced by the installation of adequate reinforced bearing

Available operations are:

  • Rod bearing journals grinding
  • Main bearing journals grinding
  • Polishing
  • Magnetic flux testing

 

Check out our processes.

Prijem radilice na rad WORK ORDER CREATION In order to speed up the process of finding adequate spare parts, we advise you to prepare the engine number of your car. It can be found in your vehicle's license card. (Only for Serbian clients). Pripremno pranje radilice FIRST WASH In order to give an accurate reviwew, the process of cleaning the crankshaft is the starting point. The crankshaft is washed in special machines in order to remove the rust and deposits of crusty oil. Defektaza radilice REVIEW After the crankshaft is thoroughly washed, it is ready for precise measurement. During the review, the degree of damage to the sleeves, its potential curvature, as well as whether there are other damages on the crankshaft itself, are determined. Obrada radilice MAIN AND ROD JOURNAL GRINDING Based on the degree of damage, the crankshaft is processed to the manufacturer's catalogue measure. In the case of certain crankshafts, it is advisable to process the journals according to the bearings themselves, which will be installed when assembling the engine. Merenje i kontrola radilice motora MEASUREMENT CONTROL After the crankshaft is grinded, the measures and their tolerances are checked. All measurements are performed on measuring tools of the renowned Japanese brand Mitutoyo. Pakovanje radilice motora PACKAGING In order to prevent foreign materials from entering the spaces of the oil channels, the crankshaft is lubricated after processing and preserved in our protective packaging. Inside the package, you can also find our warranty card/measuring sheet with the exact machining measures.