Hebei Juliang Technology Co., Ltd. is one of the leading manufacturers and suppliers of small gantry cnc 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 brief introduction

A Small Gantry CNC Cutting Machine is a compact, computer-controlled cutting system with a bridge-like gantry that moves across the plate – designed for shops that need real cutting capability without dedicating half their floor space to one machine. It handles both plasma and oxy-fuel cutting in a single unit.

What makes this machine genuinely useful isn't just the size. It's the dual-process capability. You get plasma for fast cutting of thin and medium plate – up to about 25mm with standard power sources – and flame for thick steel up to 150mm or more. One gantry, two torches. You switch between them depending on the job.

Understanding Your Steel Cutting Options: Plasma and Flame

Small Gantry CNC Cutting Machine handles two cutting processes, and the distinction between them is quite significant.

Plasma Cutting

involves an electrical arc ionizing compressed air into plasma, reaching temperatures around 25,000°C. This plasma melts the steel, while the air's pressure expels the molten material. It's a rapid process, capable of 2,000 to 8,000 mm/min depending on material thickness. However, edge quality can be a compromise, with a slight bevel and some dross to clean. For thinner materials, plasma's speed often makes it the clear choice.

Flame Cutting

uses a gas torch (oxygen and acetylene or propane) to heat steel to its burning point. An oxygen jet then oxidizes and removes the metal. This method is slower, operating at 100 to 1,000 mm/min, but it's the sole option for steel over 30–40mm thick. The cut is cleaner and more precise than plasma, though it leaves a heat-affected zone that might need preparation for welding. Flame cutting is still the industry standard for thick plate for practical reasons.

Bilateral Drive Gantry
The gantry utilizes dual-sided drive motors, which maintain its squareness during movement across the table. Unlike single-drive systems that can warp under load, bilateral drive ensures consistent accuracy, particularly in long cuts.

Essential Torch Height Control
I always recommend machines with automatic torch height control. Steel plates commonly exhibit irregularities from the production process. The THC system actively measures the torch tip's distance to the plate, making real-time adjustments. Without this, the torch risks collisions on high spots or losing the arc on low spots.

Where This Machine Goes

Small to medium fabrication shops are the sweet spot for this machine. It's perfect for creating brackets, frames, gussets, and structural components, easily justifying its cost.

Key uses include:
Steel structure fabrication for connection plates, beam flanges, column base plates, and custom brackets.
Shipbuilding and repair, cutting plates for hull sections, bulkheads, and deck components.
Construction and heavy equipment, fabricating structural parts for buildings, bridges, and mining machinery.
Machine tool manufacturing, preparing blanks for machine parts.
Farm equipment repair.

This machine is also excellent for shops working with mixed material thicknesses, employing plasma for thin to medium plates and flame for heavy plate.

For maintenance that really counts

Plasma Consumables: Daily checks on electrodes, nozzles, and swirl rings are essential. Replace them when cut quality drops, and always keep spares available.

THC: Double-check that it's operational before commencing any task.

Air Supply: Be sure to drain it daily. Moisture is detrimental, so drain it every morning.

Gas Lines: Check for leaks. Escaping gas poses a safety risk and leads to unnecessary expenses.

Guide Rails: Perform a clean and lube service weekly. Metal dust acts like an abrasive on the bearings.

Bilateral Drive Synchronization: Verify this monthly. Operate the gantry to its full travel in both directions. If it binds or produces noise, investigate the drive parameters.

Maintain a record of arc-on time. Consumables should be replaced when a noticeable decrease in cut quality is observed.

Everything You Need to Know

Can I run Small Gantry CNC Cutting Machine with just one person?

Yes. One operator can handle loading, cutting, and unloading. The machine runs automatically once the job starts. Loading heavy plates might require a hoist or roller stands, but the cutting itself doesn't need a second person.

How often should I check the gas pressure for flame cutting?

Check it at the start of every shift. Pressure that's too low won't penetrate the cut; too high wastes gas and creates a rough edge. The recommended pressure is usually marked on the torch. Write it down and check it daily.

Can I use this machine for artistic or decorative metal cutting?

Yes, but plasma isn't ideal for very intricate designs – the kerf is too wide. For decorative work with thicker material, it works fine. For fine detail, laser or waterjet would be better. But for most ornamental ironwork, plasma does the job.

Can I cut round plates or circles with this machine?

Yes – that's one of the main advantages over manual cutting. The controller has a built-in circle function or you can draw it in CAD. Circles come out smooth and consistent, unlike hand-cut ones.