Machines for agricultural equipment fabrication
The agricultural trade bends thick plate and long parts, in batches, for equipment that lives outdoors. It is not a precision trade — it is a tonnage, crowning and throughput trade. The machines below are specified for that reality.
The parts this industry bends
- Grain bin and silo panels — long bends in moderate plate, produced in volume. Flatness along the bend matters more than angle precision.
- Feeder and handling components — funnels, chutes, brackets: mixed gauges, frequent small batches.
- Trailer sides, beds and gates — wide parts, often the reason bed length gets sized generously.
- Equipment frames and mounts — structural bends in 1/4 in and up plate.
- Replacement and repair parts — the one-off work that keeps a job shop honest about setup time.
What actually decides the machine
Thickest plate, longest bend, then volume. Agricultural parts are heavy, so tonnage margins matter: under-rated machines deflect, lose angle and wear faster. Our standard hydraulic press brakes cover 30-800 tons with beds to 8 m, and the dedicated plate press brakes handle the heavy end where deflection control and crowning compensation decide the result.
Crowning. On a long bend in thick plate, the ram and bed deflect under load and the middle of the part ends up with a different angle than the ends. Crown compensation (mechanical or hydraulic) is not a luxury at these thicknesses — it is the difference between a usable part and a banana.
Material grades. Mild steel dominates, but AR and high-tensile plate show up in wear applications. Both are bendable with the right V-opening, tonnage margin and springback allowance — and both are quoted honestly, with the grade stated, not assumed.
Batch economics. Much of this trade repeats the same part seasonally. A machine with repeatable backgauge settings and stored programs shortens the spring rush; a machine that has to be re-set from scratch every time quietly costs a person-day per batch.
Machine lines that fit
- Hydraulic press brakes — 39 model sizes, 30-800 tons, beds 1.6-8 m. The backbone of agricultural fabrication.
- Hydraulic plate press brakes — for the heavy end: thick plate, long parts, structural bends.
- Plate rollers — bin rings, curved panels and cylindrical sections. Paired with a brake, it completes the shop.
- Guillotine shears — blanking for panels and gates, up to 30 mm plate classes.
- Torsion-bar press brakes — the mechanically robust option for shops that value simplicity over servo precision.
Specification mistakes we see
- Rating the machine for the average part. Agricultural shops run one heavy job a month and a hundred light ones — but the heavy job is what breaks an under-rated machine. Size for it.
- Skipping crowning on long beds. See above. At 3 m and 3/8 in, uncrowned machines produce visibly wrong angles at the centre of the bend.
- Buying CNC by default. Many agricultural parts are simple flanges; the control level should follow the part mix, not the brochure.
- Assuming any brake bends AR plate. It can, but the configuration is different — V-opening, tonnage margin and tooling radius all change. Say the grade out loud when you enquire.
Frequently asked questions
What tonnage for bending 3/8 in agricultural plate?
For air bending 3/8 in (9.5 mm) mild steel over a typical V-opening, you are in the 150-250 ton range depending on bend length — longer bends need more force and more crowning. Run the actual numbers in the tonnage calculator with your longest bend, then add margin. If the plate is high-tensile (AR or T-1), expect the force requirement to rise and the springback to be significant.
Can high-tensile or AR plate be bent on a standard press brake?
Yes, but not casually. High-strength plate needs a larger V-opening relative to thickness, higher tonnage than mild steel of the same thickness, and an honest allowance for springback that can be several degrees. The machine itself is the same platform — the difference is configuration, tooling radius and process control. Tell us the material grade up front and we will quote accordingly.
Grain bin panels — what machine and what accuracy?
Bin panels are long, mostly straight bends in moderate-thickness galvanised or painted steel. A mid-range hydraulic or torsion-bar press brake with adequate bed length and crowning compensation is the right tool; precision claims matter less than flatness along the bend. Accuracy to a degree is fine; twist and bow are what you are fighting.
Do I need CNC for agricultural work?
Often not. Much of this trade is simple flanges on thick plate, where a well-set NC or manual backgauge and good crowning do the job. CNC pays off when parts repeat in batches and angle changes are frequent. We will tell you which side of that line your part list falls on rather than upselling the control.
What about the curved parts — bin rings and round tanks?
Those are rolling jobs, not bending jobs. A plate roller curves sheet into cylindrical sections; a press brake puts straight bends in it. Shops doing both typically pair a mid-tonnage brake with a 3- or 4-roll plate roller, which we supply as a set.
Where to go next
Start with the heaviest part you will ever bend: the tonnage calculator turns material, thickness, bend length and V-opening into required force. The size guide explains why bed length quietly drives tonnage at these sizes, and the tooling guide covers punch and die radii for thick plate — the radius you bend to is set by the die you choose, so choose it deliberately.
Send us your heaviest part
Material grade, thickness, longest bend and volume — we will come back with the tonnage, bed length and crowning configuration the work actually needs.