Draaistang

Draaistang is a Dutch term that translates to "crankshaft" in English. A crankshaft is a shaft with a non-circular shape, most commonly one with offset portions or "cranks" that convert a linear or reciprocating motion into a rotational motion. This is fundamental to the operation of many engines and machines.

In internal combustion engines, the crankshaft is a crucial component. It is connected to the pistons via connecting rods. As the pistons move up and down due to the combustion of fuel, the connecting rods push and pull on the offset sections of the crankshaft, causing it to rotate. This rotational motion is then transferred to the drivetrain of the vehicle to propel it.

Beyond engines, crankshafts are also found in various mechanical devices. For example, they are used in reciprocating pumps to drive the pump mechanism, in some types of compressors, and in certain industrial machinery where linear motion needs to be converted to rotary motion. The design and material of a crankshaft are critical for its durability and performance, as it is subjected to significant stress and torque. Materials commonly used include cast iron and forged steel, chosen for their strength and resistance to fatigue. The precise engineering of the crank throws and journals ensures smooth operation and efficient power transfer.