Belt transmitting motion to a Z-axis mechanism.

Ring securing a shaft or setting shaft position.

Stepper motor controlling Z-axis positioning.

Wheel transmitting belt motion in a Z-axis system.

Rotating or translating shaft used in Z-axis motion.

Servo motor providing precise Z-axis control.

Mechanism maintaining proper Z-axis belt tension.

Mechanical connector between Z-axis shafts.

Moving assembly traveling along a Z-axis.

Sensor defining the Z-axis home position.