Moving assembly traveling along a Z-axis.

Servo motor providing precise Z-axis control.

Stepper motor controlling Z-axis positioning.

Bearing enabling smooth Z-axis travel.

Structure supporting Z-axis hardware.

Coupling connecting a Z-axis motor to a screw.

Mechanical guide for Z-direction movement.

Switch detecting the limit of Z-axis travel.

Sensor measuring Z-axis position.

Mechanical platform providing Z-direction positioning.