Mill CNC Upgrade Kit with Stepper Motors


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Product Description

If you already have a Sherline mill and would like the components needed to add stepper motors and upgrade it to CNC, but you want to use your own computer, this kit will make it easier for you. Included will be a retrofit kit to add stepper motor mounts to the X, Y, and Z axes of your mill. A new Z-axis leadscrew is included, while the X and Y screws are reused. Also included are three standard stepper motors with plugs and a 4-axis driver box. The 4-axis driver box includes a power supply and all cables necessary to connect with your computer and with your 3 stepper motors. Also included is the Sherline Linux/EMC control program on CD should you wish to install it on your computer.


If you are converting a manual mill to CNC, you will also need to purchase the Mill CNC Z-Axis Backlash Adjustment Kit to upgrade your Z-axis saddle nut.

Mill CNC Z-Axis Backlash Adjustment Upgrade
How to Adjust Your Saddle Nut Instructions

Each upgrade kit will include the following in addition to the stepper motors and driver box

  • 3 stepper motor mounts
  • CNC  Z-axis Screw
  • 2 CNC-RH Coupling Preload Nuts
  • CNC-LH Coupling Preload Nut
  • CNC Template, Bed Bushing
  • CNC Template, Slide Bushing
  • All the nuts and screws for motor mount attachment
  • Conversion and assembly instructions

NOTE: Any new Sherline machine can also be ordered from the factory with stepper motor mounts already installed. Go to the Lathes or Mills pages for descriptions and prices

The improper use of machine tools and their accessories can result in serious injury. Before using this tool, thoroughly read the instructions and make sure you understand its proper and safe use.


Always wear safety glasses when operating machine tools.

Download PDF Assembly and Instruction Guide

Instructions PDF Download

Download MILL CNC Upgrade Instructions

Instructions PDF Download