CNC Shark Terminology

1. Gantry
The bridge-like structure that spans across the machine and carries the X-axis assembly. It moves along the Y-axis rails.

2. Base
The main frame of the machine that supports all components and provides structural stability.

3. Xbox (Z-Carriage)
The vertical moving assembly mounted to the gantry that holds the router/spindle and controls up-and-down (Z-axis) motion.

4. Y-Spar
The long u-shaped structural beam running front-to-back that supports the gantry and guides Y-axis movement.

5. Lead Screw
A threaded drive shaft that converts motor rotation into precise linear movement of an axis located in each axis (X,Y,Z). The HD644 has (2) Y lead screws.

6. Anti-Backlash Nut (T-Nut)
A precision threaded component that engages the lead screw to translate rotational motion into controlled linear travel of the machine axis. There is a T-Nut for each lead screw on the machine.

7. Coupler
A precision connector that joins a motor shaft to a lead screw so rotational motion can be transferred accurately. Each coupler is connected to its corresponding motor. The X and Y axes of a Shark CNC use a 3-piece jaw coupling, while the Z axis uses a rigid shaft coupling.

8. Linear Rail
A precision metal track with a bearing carriage that provides rigid, smooth, and accurate linear motion. There are (2) located on the X and Z axis. Each rail includes a carriage bearing.

9. Linear Rod (not in image)
A hardened round guide shaft that supports linear bearings for smooth axis movement. These rods are located in the Y axis of each machine, attached to the bottom of the base. Each rod includes a shaft bearing.

10. Motor
An electric stepper motor that drives axis movement by rotating in controlled increments. There is a motor located at each axis.

11. Encoder (Not in image)
A sensor attached to a motor that monitors position and movement to ensure accurate axis control. Available on PRO versions of the CNC Shark

12. Base Cover
A protective panel that encloses internal mechanical and electrical components within the machine base.

13. Router or Spindle Clamp
An extruded clamp used to hold the router/spindle and a main tramming component.

14. Homing Magnet (not in image)
A small magnet attached to a moving axis that triggers the homing sensor to establish machine position.

15. Homing Switch (not in image)
A position sensor that detects the homing magnet to define the machine’s reference (home) location.

16. Base Table (Extrusion)

The aluminum slotted platform mounted to the machine base that supports the workpiece and allows clamps and fixtures to be secured.