noun
- a shaft with one or more cranks that converts reciprocating motion into rotary motion or vice versa, especially in an internal combustion engine
Usage: mechanical engineering
Examples
- The mechanic replaced the damaged crankshaft in the car’s engine.
- A broken crankshaft can cause serious engine problems.
- The crankshaft rotates as the pistons move up and down.
- Modern crankshafts are made from forged steel for durability.
- The engine seized when the crankshaft bearing failed.
- Each cylinder’s connecting rod attaches to the crankshaft.