What are the types of crankshafts

1、 Ordinary crankshaft

A regular crankshaft is the most basic form of crankshaft, consisting of one or more connecting rods. Its main characteristics are simple structure and low manufacturing cost, but it is prone to vibration and imbalance during high-speed and high-power operation, which will have adverse effects on the stability and service life of the engine. Therefore, in high-performance engines, ordinary crankshafts have gradually been replaced by balanced crankshafts and cast crankshafts.

2、 Balanced crankshaft

A balanced crankshaft is an improved crankshaft based on a regular crankshaft, mainly achieved by adding counterweights to balance the crankshaft and reduce vibration and imbalance. Balanced crankshafts are widely used in high-performance engines, which can improve engine performance and lifespan. However, the manufacturing of balanced crankshafts is more complex than ordinary crankshafts, and the cost also increases accordingly.

3、 Casting crankshaft

Casting crankshaft is a crankshaft manufactured using casting technology, which has the advantages of low manufacturing cost and high production efficiency. Casting crankshafts can be divided into two types: pressure shell type and cast steel casting type. Cast crankshafts are widely used in low-power engines and large-scale production due to their low manufacturing cost. However, the strength and reliability of cast crankshafts are not as good as steel crankshafts and are not suitable for use in high-power, high-speed engines.

In summary, the types of crankshafts mainly include ordinary crankshafts, balanced crankshafts, and cast crankshafts, each with its own characteristics and applicability. When selecting a crankshaft, it is necessary to consider the specific application requirements and economic benefits, and choose the most suitable type.