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BulkMan3D WorkUltra CNC Complete Full Kit with Spindle &Controller |
The WorkUltra CNC machine design has evolved through iterative upgrades based on the traditional WB CNC framework (compression-type trapezoidal leadscrew design). All current WorkUltra cnc kits sold by Bulk Man 3D represent the latest version, featuring key improvements including the Tension System implementation and extended leadscrews for both X and Y axes. These enhancements effectively address the prevalent CNC industry challenge of leadscrew whipping during high-speed operations or long-travel applications.
Built upon a robust foundation of C-Beam structures, V-Slot rails, Xtreme Solid V-Wheels, and TR8x8(P2 leadscrews, this system delivers proven reliability. Through precision engineering, it achieves cutting accuracies of 0.1-0.2mm or better when processing materials ranging from foams and woods to plastics and aluminum.
The WorkUltra CNC operates as a 4-axis (3+1) system, comprising three primary physical axes (X, Y, Z) with an additional A-axis serving as the Y-axis slave. This configuration utilizes custom-length extrusions and purpose-engineered leadscrews for optimized performance.
Key Advantage: This updated kit incorporates our innovative Tension System technology to dramatically reduce leadscrew whip - a critical advancement for modern CNC operations!
This CNC Complete Kit Includes: | ![]() |
●WorkUltra CNC Mechanical Kit ●High Precise ACME T8 Leadscrews and shims ●Interior Opening Cable Drag Chain System ●Wiring Shielded Cable Kit ●High Torque 2.45N.m Stepper Motor with 5-meter Shielded Cables ●XYZ Touch Probe ●Options Mach3 Controller Kit ○Mach3 - UC300 Controller Kit ○No Controller Kit ●Options Different Spindle Kit with Dust Cover ○1.5KW Air-Cooled ○1.5KW Water-Cooled ○2.2KW-Air-Cooled ○2.2KW Water-Cooled ○No Spindle Kit ●Free-Gift High-Speed 4Flutes end mills from 1.5-6mm(10pcs) |
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Features of Spindle Motor |
Features of 2.2KW Water-Cooled Spindle Motor Kit | ||
●Net weight(1.5KW Water-Cooled): 4.2kg ●Specs(1.5KW Water-Cooled): ∅80 x 205mm ●Net weight(2.2KW Water-Cooled): 5.5kg ●Specs(2.2KW Water-Cooled): ∅80 x 238mm ●Material: The cover is made of 304 stainless steel, and the water jack is high compression casting aluminium tube, red copper coil ●High Speed-7 series 4 Bearings: 7005 bearings(3pcs)+7002 bearing(1pc) ●Coaxality: 0.025 mm (2.5 microns) ●Voltage: 220~250 V or 110 V ●AC Rated Current: 8 A ●Frequency: 0-400 Hz ●Max Rotation Speed: 24000 R/min ●Water Cooled Run out: 0.01 mm ●Collet Type for 1.5KW: ER11 (15pcs from 1mm-7mm) ●Collet Type for 2.2KW: ER20 (28pcs from 1mm-13mm) ●Power interface: GX16 water proof aviation plug marked with numbers 1, 2, 3, 4 (Numbers 1,2 and 3 are connected to the inverter power U, V, W respectively. Number 4 is connected to the Earth wire) ●Lubrication: High temperature resistance grease lubrication. |
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Features of 2.2KW Air-Cooled Spindle Motor Kit | ||
●Net weight(2.2KW Air-Cooled): 4.5kg ●Specs(2.2KW Air-Cooled): ∅80 x 195mm ●Material: The cover is made of 304 stainless steel, and the water jack is high compression casting aluminium tube, red copper coil ●High Speed-7 series 4 Bearings: 7005 bearings (3pcs) + 7002 bearing (1pc) ●Voltage: 220~250 V or 110 V ●AC Rated Current: 8 A ●Frequency: 0-400 Hz ●Max Rotation Speed: 24000 R/min ●Run out: Less than 0.005mm ●Collet Type for 2.2KW: ER20 (28pcs from 1mm-13mm) ●Power interface: GX16 water proof aviation plug marked with numbers 1, 2, 3, 4 (Numbers 1, 2 and 3 are connected to the inverter power U, V, W respectivey. Number 4 is connected to the Earth wire) ●Lubrication: High temperature resistance grease lubrication. |
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WorkUltra |
The WorkUltra is a culmination of all our experience, feedback, and suggestions from selling the OX CNC Machine.
Based on C-Beam, V-Slot, Xtreme Solid V-Wheels and Tr8*8(P2) Lead Screws it is strong, accurate and reliable.

Z Travel Explained The reason for the two configurations is that if the machine is always used to cut thin materials, for accuracy reasons it is better to have the work piece as close to the Z-Actuator as possible, so in this case the machine should be setup in the higher 66mm travel configuration.The higher configuration has a Z travel of 66mm, with a 12mm spoiler board, this will reduce the Z travel to 54mm. In this case 54mm is maximum thickness of material that will fit on the machine.To calculate the max cutting depth for a chosen piece of material it is: Z Height 54mm Or 94mm Travel, 27mm Or 47mm Workable depth, with a 12mm spoilerboard. The spoilerboard supports have two height configurations, these are the maximums for each configuration. Motion Drive System- ACME Lead Screws Or GT3 Timing BeltsLinear Guides- Polycarbonate wheels on anodised C-Beam V-Slot Extrusion.Motors- NEMA23 345oz Stepper Motors (X, Y & Z)Accuracy- 0.05 – 0.10mm (Screw Driven) Or 0.10 – 0.20mm (Belt Driven) Note Maximum recommended speed for Lead Screws 1000mm or greater is 400RPM. Credit ” V-Slot ” and ” C-Beam ” are registered trademarks of OpenBuilds LLC as released under the Creative Commons Licence “Attribution-ShareAlike” |




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