Hebei Juliang Technology Co., Ltd. is one of the leading manufacturers and suppliers of portable single arm cnc plasma cutting machine in China. Please feel free to buy CE approved machinery made in China here from our factory. All customized machines are with high quality and competitive price.
Product Description
A Portable Single Arm CNC Plasma Cutting Machine is a computer-controlled system that utilizes a cantilever arm, unlike typical dual-sided gantry designs. In this setup, the cutting torch travels along the arm while the material stays in place. Equipped with a plasma torch and capable of processing standard DXF and DWG files, it efficiently cuts through conductive metals such as carbon steel, stainless steel, and aluminum. Its single-arm construction makes it a lighter, more compact, and significantly more affordable alternative to full gantry systems, without compromising CNC accuracy.
Hebei Juliang Technology Co., Ltd. introduced these machines in response to feedback from numerous small business owners and mobile contractors. They expressed a strong need for CNC capabilities but found traditional double-sided gantry machines to be cost-prohibitive and demanding on space. The single-arm design was developed precisely to address these particular requirements.
How Does a Single-Arm Machine Work?
Similar to larger CNC cutting systems, but its single-arm design alters how the machine operates.
The main feature is the cantilever structure. Instead of a bridge across the table with drives on both sides, the arm extends from one side like a crane. The torch moves along this arm (X-axis), and the whole arm assembly travels along the table's length (Y-axis). This one-sided setup requires only one set of drive parts, cutting down on cost and weight.
Cutting is done by a plasma arc. Compressed air goes through a copper nozzle in the torch. An electric arc energizes the air, turning it into plasma at temperatures between 20,000°C and 30,000°C. This plasma melts the metal on contact, and the fast-moving gas blows away the melted material. The process works on all conductive metals, including carbon steel, stainless steel, aluminum, and copper.
The CNC controller reads design files from a USB. The operator chooses the material type and thickness on the screen, and the system sets the right cutting speed, gas pressure, and amperage. Some versions have built-in shape libraries for common designs like circles or rectangles, selectable right from the display.
The motion system uses stepper or servo motors with precise gears and racks. The single-drive setup means one motor controls movement for each axis. While not as sturdy as dual-drive gantries, for metal up to about 16mm thick, the cut quality difference is usually minor.
Torch height control, common on most models, keeps the torch at a steady distance from the work by monitoring arc voltage. This adjusts for any plate unevenness. Initial height sensing finds the plate surface and sets the correct piercing height before cutting starts.
Setup takes 15 to 30 minutes, varying by model. Its modular design lets the arm, console, and mechanical parts be put together separately. No foundation work, bolting, or floor prep is needed.
Single Arm vs. Double Gantry: Understanding the Trade-Offs
The choice between a single-arm machine and a full gantry system involves several trade-offs that potential buyers should understand.
Structural rigidity is the primary difference. Double gantry machines have drives on both sides, which keeps the beam more stable during cutting-especially at high speeds and on thick materials. Single-arm machines have the drive on one side, which can allow slight deflection under heavy loads. For materials up to approximately 16mm, the difference is minimal. For thicker materials or production applications where every cut must be perfect, a gantry machine maintains an advantage.
Cost is where the single-arm design shines. With only one set of drive components, the machine costs significantly less to manufacture. This saving is passed on to the buyer. Single-arm machines typically cost 30–50% less than comparable gantry systems.
Floor space is another advantage. Single-arm machines have a smaller footprint because they don't require rails on both sides of the table. They also take up less space when stored.
Weight and portability favor the single-arm design. With fewer components, the machine is lighter and easier to transport between job sites. The modular design means components can be packed separately for shipping.
Cutting area is more restricted on single-arm machines. The effective cutting width is limited by the arm length, typically ranging from 1000mm to 2500mm. Gantry machines can handle wider sheets. For most small to medium fabrication work, the single-arm width is sufficient.
Certificate Display
Customer Cases
Small Fabrication Shop, India
A fabrication shop in Pune was using manual cutting methods for custom gates, railings, and brackets. Quality varied between operators, and they were losing work to competitors with CNC capability. The owner couldn't justify the cost of a full gantry machine-it would have consumed most of his startup capital.
He purchased a Portable Single Arm CNC Plasma Cutting Machine with a 1500×3000mm cutting area and 60A plasma power. The machine fits in a corner of his workshop. Within three months, he was winning contracts he couldn't even bid on before. His quality improved, his turnaround times dropped, and his revenue increased by approximately 40% in the first year. The machine recovered its cost within eight months.
FAQs
A single-arm machine has the cutting arm extending from one side only, with a single drive system. A gantry machine spans across the table with drives on both sides. Single-arm machines are lighter, more affordable, and take up less space. Gantry machines are more rigid and better for thicker materials and high-volume production. For materials under 16mm, the difference in cut quality is minimal for most applications.
Yes, but only with plasma. Oxy-fuel cutting relies on an oxidation reaction that only occurs in carbon steel. Plasma cutting uses an ionized gas arc that works on any electrically conductive metal, including stainless steel and aluminum.
Setup time ranges from 15 to 30 minutes depending on the configuration. The modular design allows the arm, console, and mechanical components to be assembled independently. No foundation work, bolting, or floor preparation is required.
With plasma at 100A, the machine cuts mild steel up to 25mm. With oxy-fuel, it cuts mild steel up to 200mm. The actual achievable thickness depends on the specific configuration and the quality requirements of the cut edge.
For materials up to approximately 16mm thickness, the difference in cut quality is minimal for most applications. The single-drive configuration can allow slight deflection under heavy loads, but for the typical work of small shops-brackets, signs, prototypes, general fabrication-the accuracy is more than sufficient.
Company Information
Hebei Juliang Technology Co., Ltd. was established in 2014 and is located in Shijiazhuang City, Hebei Province, China. It has a production base of 4,000 square meters.
The company focuses on CNC cutting systems, including portable single-arm plasma cutting machines, fixed plasma cutting tables, flame cutting machines, and combined equipment. Its products are exported to multiple countries and regions such as Southeast Asia, South Asia, the Middle East, Europe, and South America.
The engineering team holds patents in the design of portable cutting systems. The on-time delivery rate remains at 94%. According to verified customer evaluations, customer satisfaction is approximately 90%.
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