Portable gantry frames
Our portable gantry frames are built for cutting work that moves between a farm shed, a small workshop and a site job. The frame design covers straightforward assembly, practical levelling and size options that suit different working spaces.
Frames made for moving work
A portable gantry frame gives you the reach of a larger cutting bed without tying the machine to one floor forever. The frame breaks down into manageable sections, bolts together on site and carries the rail, crossbeam and drive components in a layout that can be packed for transport when the job shifts. For many Free State clients that matters more than a fixed heavy table, especially where cutting happens part in the shop and part out at a steel yard or farm workshop.
We focus on compact and portable CNC plasma cutting equipment rather than heavy industrial gantries. That means the frame range suits mobile welders, repair teams, gate and trailer builders, agricultural maintenance crews and smaller fabrication shops that need clean repeatable parts without dedicating a large permanent bay to one machine.
How the bolt-together structure is arranged
Each frame is set up around straight rail sections, joined and aligned in sequence, with a gantry beam running across the bed width. The structure uses practical details throughout: sections are manageable to carry, fixing points are easy to reach, and the completed frame can be checked with basic measuring tools before final tightening. In real workshop conditions that counts for a lot.
- Rail sections bolt together in order, making transport and storage easier.
- Levelling feet or support points are adjusted across the full bed length.
- The crossbeam spans the working width and carries the torch motion system.
- Cable routing is kept tidy so leads do not drag into the cut area.
- The frame can be stripped down for relocation when site work changes.
On uneven concrete or a hard-packed floor the support points are adjusted first, then the rails are checked for twist and straightness. Steel size matters, and so does how easily the machine can be set true after transport.
Levelling on farm floors and workshop slabs
Portable machines are often asked to work on floors that were never cast for precision equipment. Around Bloemfontein we see smooth workshop slabs, rough agricultural sheds and covered outdoor areas where the floor falls away more than expected. The frame needs enough adjustment to deal with that, and the operator needs a method that can be repeated after every move.
We normally advise clients to start with the longest side first, then bring the opposite rail into line, then square the gantry travel across the width. If the frame is moved often, marking the best foot positions on the floor saves time later. A machine can cut well on a simple site layout if the rails are straight and the support points are properly loaded, but rushed setup usually shows in the parts.
- Best for indoor use: level concrete with room to walk the full perimeter.
- Acceptable with care: hard compacted floor under cover, checked at every foot point.
- Less suitable: soft ground, sloped paving or floors that flex under load.
Choosing bed size for the work you actually cut
The right frame size depends less on ambition and more on plate sizes, transport method and the longest jobs you expect every month. A smaller bed is easier to move and quicker to level. A longer bed earns its place when sheet handling is already part of the day and repeated part nests need the extra length.
- Compact beds suit brackets, gussets, base plates and repair parts cut one or two sheets at a time.
- Mid-size frames suit gate work, trailer components, tanks stands and mixed workshop output.
- Longer beds suit shops cutting larger panels, repeated batches and longer structural items.
If you are choosing between two lengths, think about loading space at both ends of the frame and the full cut area. A bed that fits the room on paper can still be awkward if full sheets cannot be turned, supported or slid into place cleanly. For mobile work, trailer length and vehicle payload matter just as much as the machine footprint.
Frame only or a full portable cutting package
Some clients need the gantry frame added to equipment they are buying as a complete portable setup. Others already know they need the frame, the right air-plasma power range, machine torch arrangement and air supply chosen together. The frame is one part of a working system, so it helps to match the structure to the power unit and the kind of jobs planned for it.
A practical comparison helps:
- Frame only: suitable when you are planning the layout first and want to confirm bed size and transport method.
- Frame with power unit: suitable when cut thickness and duty cycle are already known.
- Frame with torch and air package: suitable for new setups where machine torch mounting, compressor capacity and air drying need to be matched from the start.
- Starter bundle: suitable for teams that want a complete portable package with on-site operator training.
For workshops near the Lesotho border and in the drier interior, air quality still matters more than many expect. Dry clean air improves cut consistency and helps the machine behave properly on long runs.
Transport, setup and support from Bloemfontein
We sell and support these portable gantry frames from Bloemfontein, with call-outs across the Free State and travel further afield where the job justifies it. That includes farm areas, Northern Cape work, border towns and other parts of South Africa where a fixed heavy machine is not the right answer. On-site operator training is available for teams that need help with assembly, levelling and first production cuts.
If you are weighing up sizes or want the frame matched to a full cutting package, send the working area you need, the material sizes you handle most often and whether the machine will stay in one shop or move between sites through our contact form. That gives us enough to point you to frame options that suit the work and the space available.
Questions we get asked
Can a portable gantry frame stay assembled permanently?
Many clients assemble the frame in one workshop bay and leave it there for regular production. The bolt-together layout still helps later if the machine must be moved to another branch, farm or rented premises.
Is a portable gantry frame suitable for outdoor cutting?
It can be used in covered outdoor areas, but the best results come from a dry stable surface with protection from wind and rain. If the frame is moved outside often, extra care with levelling and air quality becomes important.
Do you supply heavy industrial gantries?
Our range is aimed at compact and portable CNC plasma cutting for smaller fabrication work, farm maintenance and mobile applications. We do not build heavy industrial gantries or take on retrofit work.
Also worth a look
Tell us about the job
Send sizes, materials and where you are through our contact form, and we will come back with the practical options.
Open the contact form