These shoes, which are formed form bearings, they move back and forth on the guiding board Cross Head. That this long guide plate is screwed and connected to the vertical direction frame of the engine. These plates are located between the two cylinders.
This model is used for linear compressors. Cross heads are usually produced in two types, either in a harmony or in a installable shoe, and are manufactured in two types of metal and Babbitt, or non-Babbitt cast Iron.