Introduction to the cylinder

Cylinder refers to the cylindrical metal parts that guide the piston to perform linear reciprocating motion in the cylinder. Air expands in the engine cylinders to convert thermal energy into mechanical energy; gas is compressed by pistons in the compressor cylinders to increase its pressure.
The housings of turbines, rotary piston engines, etc. are often also referred to as "cylinders". The application fields of the cylinder: printing (tension control), semiconductor (spot welding machine, chip grinding), automation control, robot and so on.