Types of Crankshafts Used in Industrial Machinery


A crankshaft is a vital component in any type of internal combustion engine, and plays a crucial role in converting linear motion into rotational motion. Crankshafts are commonly used in industrial machinery, ranging from large trucks and heavy-duty construction equipment to smaller handheld power tools. These crankshafts are designed to withstand high torque and frequent use, making them an essential part of any industrial machine.

There are several types of crankshafts used in industrial machinery, each with their own unique characteristics and applications. In this article, we will discuss the different types of crankshafts and their uses in industrial machinery.

1. Forged crankshafts
Forged crankshafts are the most commonly used crankshafts in industrial machinery. They are made by heating and shaping a solid piece of steel using a forging process. This process aligns the grain of the steel, making it stronger and more durable than cast crankshafts. Forged crankshafts are usually used in high-performance engines that require high strength and reliability. They can also withstand high temperatures and heavy loads, making them suitable for heavy-duty applications.

2. Cast iron crankshafts
Cast iron crankshafts are made by pouring molten iron into a mold and allowing it to cool and solidify. Cast iron crankshafts are less expensive to produce compared to forged crankshafts, making them a popular choice in budget-friendly industrial machinery. However, they are not as strong and resilient as forged crankshafts, and are best suited for low to medium load applications.

3. Billet crankshafts
Billet crankshafts are made from a solid block of steel, which is then machined into shape. They are typically used in high-performance and racing engines, where every component needs to withstand extreme forces and deliver maximum power. Billet crankshafts are known for their precision and high strength, making them the top choice for performance-driven industrial machinery.

4. Nitrided crankshafts
Nitriding is a surface hardening process used to strengthen the crankshaft. During this process, the crankshaft is heated in a nitrogen-rich environment, which causes nitrogen to penetrate the surface of the steel and form a hardened layer. Nitrided crankshafts are less prone to wear and tear, making them ideal for high-speed engines that require frequent use.

5. Enamel-coated crankshafts
Enamel-coated crankshafts are typically used in marine and mining equipment, where they are exposed to harsh and corrosive environments. These crankshafts are coated with a layer of enamel, which helps protect them from rust and corrosion. Enamel-coated crankshafts are also known for their high tensile strength, making them suitable for heavy-duty applications.

In conclusion, the type of crankshaft used in industrial machinery depends on the specific requirements of the engine and the type of application it will be used for. Each type of crankshaft has its own strengths and weaknesses, and it is essential to choose the right one to ensure optimal performance and durability. Whether it’s a forged crankshaft for high-stress applications or an enamel-coated one for harsh environments, the right type of crankshaft is crucial for the smooth operation of any industrial machine.