20%OFF US Stock xPROV5 GRBL Control QueenBee PRO CNC Router Machine Full Kit




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QueenBee PRO

Bulk-Man 3D is the largest wholesaler of Open Source CNC parts to the world. By having the parts produced ourselves, or sourcing the parts directly from the factory, we eliminate the middle man and in doing so are able to provide the best wholesale price direct to the public!

The Bulk-Man 3D QueenBee PRO CNC Machine is a linear rail upgrade based off the very popular Work-Bee CNC Machine.
The QueenBee Pro Full Kit is a self-assembly kit and comes with everything needed for building your CNC Machine. Other parts that are needed for you to perform your ‘first cut’ are: Baseboard, Endmills, Power cord and Software.

The  2.2KW Air  or  2.2kW Water Cooled Spindle Bundle contains all the hardware for mounting a the Spindle on your Work-Bee or other CNC machine.
The Cable Drag Chain bundle contains all the hardware for mounting Cable Drag Chains on your Work-Bee, Ox CNC or other CNC machine to help with cable management.

What’s Included In This Full Kit:

  • QueenBee PRO Mechanical Kit
  • 4 x Nema23 (2.45N.m) Stepper Motors
  • Cable Drag Chain System
  • Spindle Bundle (Optional)

– 2.2KW Water-Cooled 110V
– 2.2KW Air-Cooled 110v

  • xPROV5 GRBL Controller Bundle with Wiring Cable Kit
  • All Extrusions are M5 Tapped as where it is necessary

QueenBee PRO

The age old issue of flex in the X-Z axis on the WorkBee CNC was a common topic when considering upgrades for the machine. The main solution individuals came to was replacing the V-Wheels with Linear Rails to increase overall rigidity and accuracy as well as reduce chatter when working on metals.

After many CNC owners and members of the community approached us requesting a high quality linear rail solution for their machine at an affordable price, our technicians worked hard researching different options available and ways we can improve on existing designs. The result of the project is the QueenBee PRO CNC Machine.

What are Linear Rails and Bearings?BE0019 Linear Block 详情

Linear Rails consists of two parts, the rail and the bearing.
The Rail is a precision machined strengthened steel assembly that has twin parallel tracks to guide a bearing (also know as roller) along.
When combining the rail with the bearing you achieve low friction and high stiffness linear motion for loads ranging from 1kg to thousands of kilograms.

Why use Linear Rails?

There are many applications for using linear rails including; industry, medical, science, defence, mining, construction, transportation. The benefit of linear rails over other types of linear guides are the rigidity, accuracy and load capacity. Linear rails are designed to withstand force applied from loads in all directions, unlike other guides that are only designed to withstand a load in one direction.
Linear bearings use recirculating balls held in place under tensions for movement. The high strength construction of the bearings make them superior to previous wheel motion in respect to load capacity, displacement accuracy and rigidity.


Machine Capability

The QueenBee PRO is not only a machine capable of cutting through a wide diversity of materials. The QueenBee PRO CNC excels at Cutting and 3D Carving through plastics, foam, softwood, hardwood and even soft metal such as aluminium and brass.

Compatible Material for Cutting/Milling/Engraving: Aluminium / Hard Wood / Soft Wood / Oak / Plexi Glass / Delrin / HDPE / Foam and so on.

By using different Drill Bits & Milling Cutters: The QueenBee PRO can create intricate 3D carvings like wood artware, inlays, adverting logo, plaques, furniture, amazing art works and so much more. All the widely used applications can be achived here!

QueenBee PRO features

The QueenBee PRO has some very impressive features that have been introduced. Some examples include:

Upgraded Plate Set Design for all axis. The new plates have many key features including;

  • Increasing the workable height
  • Providing a solution for linear rail motion
  • Correctly aligning the lead screw motion system
  • Anodised thicker plates
  • Additional mounting options for increasing overall rigidity
  • Smarter design to allow for easy adjustments of parts after assembly
    High Quality Precision Linear Rails for the entire motion of the axis
    Upgraded Specialised Nut Block Spacer
    Reduces almost all X-Z Axis ‘flex’ with strengthen linear rails and additional bracing

    ‘PRO’ features

    The original QueenBee design was a good foundation for the Bulk-Man 3D linear rail upgrade, however it had some limiting features that were overlooked. After feedback we received from individuals upgrading their machines to linear rail, some features of the original design were identified as problems and we worked on creating solutions in order to make the QueenBee PRO an even more reliable and rigid design.

    Some upgrades to the original design include: 
    Standoffs for the ACME nut blocks.

    The original design spaced the nut blocks using the bolt and standard metric spacers. While this worked, the nut blocks were very easy to misalign and adverse movement of the nut blocks resulted in the feed rate being limited. The QueenBee PRO overcomes this issue by securing the nut blocks in place using a specialised spacer block. With our new specialised secure spacer block there is no unwanted movement in the nut blocks due to the extended standoff.

    The X and Z Plate design allows for easy adjustments of the ACME Nut Blocks after installation

    If you have assembled a CNC Machine you know there is nothing more frustrating then having to disassemble parts just so you can adjust one component. Our new design has worked to make adjustments easy even after assembly.

    Extrusion inserted inside the Y-Axis C-Beams making the axis stronger

    The empty space inside the C-Beam has been filled in to make a super rigid true 8040 profile.

    Y-Axis End Plates have been re-designed to increase the rigidity of Y-Axis, as well as correctly align the Lead Screw for the new HGR Rails

    With the HGR rails and bearings spacing the gantry further from the extrusion the ACME Lead Screw has been cleverly positioned accordingly.

    Y-Axis Gantry Plates have been re-designed to include additional mounting positions to secure X-Axis and increase Y-to-X Axis rigidity.

    A stronger Y-to-X Axis design has been introduced to reduce the chance of any axis ‘twist’.

    Extrusion secured to the back of the X-Axis to reduce flex and increase rigidity

    By fixing extrusion to the back of the X-Axis the overall rigidity has been increased substantially.

    All plates are designed for the Bulk-Man 3D Tingle Tensioning System

    Our Tingle Tension System to reduce lead screw ‘whip’ is a key feature in all new lead screw driven designs.

    New and improved rigid spoilerboard design

    A stronger spoilerboard makes the baseboard installation both easier, and more stable.

    Heavy Duty Slide in T-Nuts

    The Linear Rail is secured to the extrusion using Heavier Duty Slide in T-Nuts rather than the light duty Drop-In T-Nuts.

     xPROV5 Controller

    We are honoured to become a registered distributor of Spark Concepts’ xPRO V5, the most advanced GRBL based motion controller in the World!

    Our professional recommendation is the xPRO V5 CNC Controller  which is the most advanced GRBL CNC Controller of its class in the world. It has 6A silent stepper drivers, WiFi and off-line options, and 4x faster than our other controllers.

    Please note: xPROV5 is GRBL32(Firmware) processor, which does not recommend to upgrade the firmware to FluidNC. Please keep the existing GRBL32

    and existing files installed for use.

    • The CNC xPRO V5 is developed by Spark Concepts in USA who have been making GRBL CNC products for many years. It runs off a 32bit processor with over 4x faster the processing power of most other GRBL controllers.
    • The xPRO V5 is pre-assembled and pre-flashed with the latest GRBL version. We recommend the xPRO V5 as the best controller option available.
    • The stepper drivers are easily suitable for our High Torque
    • Stepper Motors and can even power stronger motor such as Nema34.


    •  32bit processor
    • High powered Trinamic 6A Stepper Drivers
    • Supports VFD control
    • Easy Plug and Play
    • SD Card which allows for offline use
    • Both Wi-Fi connection & USB connection (user choice)
    • This option is the best choice for both a novice starting out, and with people with experience and technical knowledge.

    If you are confused about the different controller options, please for more details!

    Component Specs

    2.2 KW Water Cooled Spindle 110V

    • Net weight (2.2kW Water-Cooled): 5.3kg
    • Spec(2.2kW Water-Cooled): φ 80 x 205mm
    • High Speed-7 series 4 Bearings
    • Power: 2.2 KW
    • Voltage: 110 V
    • Frequency: 400 Hz
    • Speed: 0-24000 R/min
    • Water Cooling
    • Run-out off: less than 0.005 mm
    • Grease Lubrication
    • VFD Inverter 2.2 kW 110 V
    • Collet: ER28 (28pcs/set, size from 1mm~13mm)

    2.2 KW Air Cooled Spindle 110V

    • Net weight(2.2kW Air-Cooled): 5.5kg
    • Spec(2.2kW Air-Cooled): φ 80x 205 mm
    • High Speed-7 series 4 Bearings
    • Power: 2.2kW
    • Voltage: 110 V
    • Frequency: 400 Hz
    • Speed: 0-24000 R/min
    • Air Cooling
    • Run-out off: less than 0.005 mm
    • Grease Lubrication
    • VFD Inverter 2.2kW 110 V
    • Collet:ER20 (28pcs/set from 1mm~13mm)

    Nema 23 High-Torque Stepper Motors

    • Step angle: 1.8°±5%
    • Phase number: 2
    • Insulation resistane: 100MΩ min.(500V DC)
    • Insulation class: Class B
    • Rotor inertia: 600g.cm2
    • Mass: 1.2kg
    • Rated voltage: 3.6V
    • Rated current: 3A
    • Resistance per phase: 1.2Ω±10%
    • Inductance per phase: 4mH±20%
    • Holding torque: 2.45N.m
    • Detent torque: 90mN.m
    • Suit for Controller: CNC xPROV5, UC300, High Current GRBL etc.

    Cable Drag Chain

    Our 15x30mm Cable Drag Chains have each individual link able to be opened up, this is an incredibly useful feature that the smaller drag chains do not have.

    Drag chains can be shortened or lengthened by simply removing or joining links of the chain.


    Dual Spindle Mount Kit

    Our router spindle mount kit provides all the mounting

    hardware required to securely attach a router. Dual spindle structure makes your Z axis running more steadily!


    More information about the QueenBee PRO

    About the ‘QueenBee’ name

    CNC Machine designs evolve through community modifications and version upgrades. The benefit of the nature of the OpenBuilds style CNC machines means that designs can always be upgraded and improved on.

    First there was the Shapeoko by Carbide 3D, then ROUTY by OpenBuilds followed by the famous Ox CNC which was a V-Slot machine based on the Shapeoko. After some time Ooznest developed the WorkBee which was based on the foundation the Ox design laid. The WorkBee has since gone through several versions, with the most recent version using the Tingle Tension System introduced to the market by Bulk-Man 3D. Working to create a linear rail upgrade CNC3D created the QueenBee upgrade as a linear rail option designed to work with Bulk-Man 3D WorkBee CNC Machines. We made this linear rail upgrade the foundation of our own linear rail upgrade, however we have made several changes to the design to improve the machine.

    There have been a few different ‘linear rail upgrade’ designs over the years to suit the WorkBee, Ox and Lead CNC Machines. A well known upgrade for the Bulk-Man 3D WorkBee CNC Machine was the QueenBee. The original QueenBee upgrade paved the way for the Bulk-Man 3D QueenBee PRO, and the name ‘QueenBee’ has become a common description for linear rail modified WorkBee machines.

    As this machine is still an upgraded linear rail WorkBee design, the name ‘QueenBee’ seems fitting however with the changes and improvements made to the new and improved Bulk-Man 3D design, the name given to this WorkBee Upgrade is the QueenBee PRO.

    What is the benefit of upgrading a WorkBee to a QueenBee PRO?

    The WorkBee is a very clever and strong design, it has been our recommended machine for many years and has served the CNC community well. However when the WorkBee was first designed, the frame size was 750mm along the longest axis. This worked very well when paired with a small router in a woodworking hobby application. The WorkBee design began to show some weaknesses when pushed beyond its original design as demand called for heavier spindles to be mounted to the machine, longer axis for enlarged workable areas, and capabilities of working with stronger materials such as aluminium.

    The QueenBee PRO is the perfect solution to these weaknesses. The upgraded strengthen plates and extrusion layout paired with the precision linear rail system allow for heavier tools such as a 2.2kW and even a 4kW Spindle to be mounted to the machine. The increased rigidity of the linear rails on all axis reduces twisting of the axis and flex in the gantry observed on the WorkBee due to heavier tools being used.

    The QueenBee PRO creates a smooth and precise finish when milling aluminium and other soft metals by reducing chatter. The common ‘lead in’ and ‘lead out’ trail observed with machines using V-Wheels operating at high feed rates has also been eliminated. Faster cut times and operating speeds are now possible.


    When upgrading an existing WorkBee to a QueenBee PRO design, the WorkBee will need to be almost completely disassembled.

    Lubricant for the bearings is applied when they are manufactured however routine maintenance and re-lubricating is recommended, especially in high dust applications such as MDF.


    Credit is owed to the the designers of previous machines that have paved the way for new designs that lead to our QueenBee PRO including, Carbide 3D, OpenBuilds LLC, Ooznest, CNC3D.

    “V-Slot” and ” C-Beam” are registered trademarks of OpenBuilds LLC as released under the Creative CommonsLicence “Attribution-ShareAlike”

    All our components are designed to work and are fully compatible with the products produced by OpenBuilds.

    Bulk-Man 3D is the largest wholesaler of Open Source CNC parts to the world. By having the parts produced ourselves, or sourcing the parts directly from the factory, we eliminate the middle man and in doing so are able to provide the best wholesale price direct to the public!

    Additional information

    Weight N/A
    Dimensions N/A
    Frame Size

    1000x1000mm, 1500x1500mm

    Spindle Option

    Water Cooled 2.2KW-110V, Air Cooled 2.2KW-110V

    Extrusion Color

    Sleek Silver, Industrial Black