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4'x8' Heavy Duty CNC Machine Kit (greenBull 4X) - with 2.2kW Spindle
This kit comes with everything included in the base kit and adds a 2.2KW Spindle with 220V inverter. Contact us if you need a 110V version.
4'x8' Heavy Duty CNC Machine (greenBull 4X) with 2.2kW Spindle - Assembled Version.
This includes everything in the base kit including the 2.2kW Spindle. This version is assembled, meaning we put the gantry together and ship it out to you. You then just need to build your table and attach the rails, bearings, and gantry.

Perfect for standard 4'x8' sheets, the greenBull 4X Heavy Duty CNC machine is great for all you machining needs. Don't let the wooden structure fool you. The greenBull can tackle almost every job you throw at it with precision and accuracy. Great for wood, acrylic and even light aluminum. We also offer a Long Z option that has the capabilities to machine thick foam. Table or Torsion Box Not Included


Big Business Production. Small Business Cost.

The greenBull Heavy Duty CNC is a fully equipped CNC machine kit that will allow you to mill full length 4' x 8' sheets. We stand by our conviction that this machine is the most affordably priced, heavy duty CNC kit on the market today.

How do we know for sure? Because we use it every day in our shop. That's right. Our greenBull 4X self-replicates daily, building a clone army to equip the masses with the tools to achieve industrial dominance across the globe.

The greenBull series, like all our machines, is American-made in the great state of Texas. Whether you're looking to automate the process for general woodworking applications, cabinetry, sign-making, construction, or milling other material like acrylic or light aluminum, the greenBull has the power to significantly reduce your production time.

Did we mention we can also throw a laser on it? You bet. All machines in the greenBull series come with the option to equip a 40W CO2 laser tube on the gantry so you can cut and burn on the same machine.

Purchasing Guide

Basic Kit – with 2.2kW Spindle - Includes everything in the basic kit and a 2.2kW Spindle with 220V Inverter. Does not include: Table, Computer, Software, Bits (end mills) Spindle is water-cooled and requires some additional wires and plumbing equipment. We recommend you seek a licensed electrician for installation. Note: If you don’t have access to 220V power, we can provide you with a 110V inverter. Contact us for a custom quote.

Assembled Version – with 2.2kW Spindle - Includes everything in the basic kit – with 2.2kW 110v/220v Spindle. We assemble the gantry for you and ship it to you in a crate via freight carrier (you choose during checkout). You will still need to construct your own table for the gantry and install the aluminum rail on it.

Computer and Control Box Options - This is not necessary if you purchase the assembled version. The electronics are mounted on the gantry of the machine.

Basic Assembled Control Box redFly – with this option we install and wire the electronics in a custom-made control box. This is a great option if you want to save the time of wiring and mounting the electronics yourself.

Assembled Control Box with Deluxe Computer – Includes the control box option plus an integrated computer built into the control box. The computer features an Intel Pentium 3.0 GHz processor with 2GB of RAM and a Seagate 1TB Internal Hard Drive. This package includes Mach3 CNC software and a Windows 7 Professional license, which we will register in your name and pre-install on the computer for you.

Technical Stuff

  • Actual table dimension for the 4'x8' are 55.25"x123" (this will create a 1 inch overhang on both sides).
  • The overall design has increased rigidity for the new routing/milling area but still maintains the aesthetics that are common across all of the machines on this site.
  • To guarantee that the gantry doesn't flex at all, a series of ribs were added within the gantry box making the entire gantry very similar to a torsion box.
  • The motors selected for all of the axes are NEMA 34 with 1/2" shafts (driven by 6.0 amp drivers).
  • The dust shoe is redesigned to provide better dust extraction capability.

Important Things to Know:

  • The entire machine kit will take about 10-14 business days to produce and send out under normal circumstances. During busy periods this could increase to 15-21 business days. You can always contact us for an accurate estimate before purchasing. Assembled Machines will take longer as they have to be produced to order. Expect a lead time of 3-4 weeks for assembled machines.
  • We include a standard amount of 50 feet of motor cable for the greenBull 4X. The recommended length is for systems in which the computer will be placed right next to the machine. If you plan on having the computer further away from the machine you will need to purchase longer cable lengths. If you are unsure about how many feet of cable you need, please call or email us and we will assist you.
  • The Spindle will require 12/3, 14/3, or 16/3 gauge cable for wiring from the inverter to the wall. You will also need 4 conductor wire for wiring the Spindle to the inverter as a 4th wire for ground is needed. It is important to understand the electrical requirements for wiring the Spindle, so for this reason we strongly recommend you check with a licensed electrician before attempting to wire it.

For International Buyers: Please do not use our shipping calculator if you are attempting to purchase a product that needs to be freighted and is outside of the United States. Please contact us and we will arrange a freight quote for you. Any products bought requiring freight will be subject to additional shipping charges if purchased without receiving a freight quote.

Wiring Diagrams and Tutorials:

2.2KW Spindle Wiring: Diagram

How to Program Inverter / VFD: Click Here

Mach3 USB Interface Board Wiring: Diagram

Parallel Breakout Board: Diagram | Video Tutorial

USB Breakout Board: Diagram | Video Tutorial

FOR ASSEMBLY INSTRUCTIONS: Please refer to the Instructions found on the greenBull 5X page (Scroll down to Instructions)

Some Image Examples from Customers:

Ask a question about the 4'x8' Heavy Duty CNC Machine:
Previously answered questions:

Click on the question to reveal the answer.
  • [4'x8' Heavy Duty CNC Machine] What is the Z-axis travel?

    The z-axis travel is 9 inches with the short Z-axis option capability which will largely be determined by how the table is made and if there is a depression built into the table.

    Click the link to add information to this solution:
    [514] What is the Z-axis travel?

  • [4'x8' Heavy Duty CNC Machine] Is it possible to add a 4th axis? Can on-site demo le he scheduled?

    Yes, a 4th axis can be installed on this machine. However, you will need to make the 4th axis at a different level than what the table surface is so you can maximize the reach of the machine and the size of the workpiece you affix to the 4th axis. One way to install a 4th axis would be to create a depressed portion of the table (like a trench) for the head stock and tail stock of the 4th axis. This depressed section should be large enough to provide for the typical workpiece clearance to rotate, and for the end mill on the spindle (router bit on the router) can reach the desired depth into the workpiece.

    Click the link to add information to this solution:
    [514] Is it possible to add a 4th axis? Can on-site demo le he scheduled?

  • [4'x8' Heavy Duty CNC Machine] What are shipping costs and duties to ship greenBull 4'x8'to Toronto, Canada?

    At the time of this writing (11/18/2021), the freight transport is between $600-$946 not including insurance. Insurance is around $100. The import duties are 5% for tax and Ontario has an HST of 13%.

    Click the link to add information to this solution:
    [514] What are shipping costs and duties to ship greenBull 4'x8'to Toronto, Canada?


Demonstration from one of our customers on how he uses the greenBull CNC router.


How to cut aluminum with the greenBull CNC router


greenBull spindle test full depth


the surfacing process that we use on our machines. This video shows the greenBull CNC router surfacing the spoilboard.

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