This guide narrows the field before you commit to a purchase: decide between 2D and 3D forming and between NC and CNC control, then match one of eight rated tensile-force bands, from 15 kN to 120 kN, to the profile you actually need to form. Buying on catalogue numbers alone is risky, because the right band depends on your section, alloy, wall thickness and tolerance — so the fastest route is to send a part drawing to a bending machine manufacturer and have the machine class confirmed against that drawing. The pages below let you compare control architecture, force bands, precision and build details in one place, and the same route works whether you are shortlisting a cnc stretch bending machine manufacturer for a new line or replacing a single unit in an existing one.
The 2D/3D CNC stretch bending machine is offered in two forming configurations and two control levels, and the machine page names them separately: 2D units are modelled as CAT-SBCNC-2DM… and 3D units as CAT-SBCNC-3DM…. Work out which pair applies to your part before you compare anything else, because the control level drives cost, precision and the type of work the machine suits.
| Element | NC | CNC |
|---|---|---|
| Control element | PLC + touch panel | Industrial computer + motion controller |
| Power of hydraulic system | Three-phase asynchronous motor | Servo motor |
| Precision | Low, suitable for general processing | High, suitable for precision machining |
| Cost | Lower | Higher |
| Application scenario | Ordinary machining task | High-precision, high-complexity processing tasks |
Buyer decision: if your tolerance band is generous and the part is a straightforward profile, the NC route keeps the budget low. If the part is complex or the tolerance is tight, the CNC route is the one described as suitable for precision machining.
The machine is rated across eight stretch-bending force bands. Treat force as your starting filter, not the final specification: it tells you which class of machine is worth discussing, and the drawing review tells you what the machine must actually hold.
| Tensile force band | Configuration | Model named on the machine page | |
|---|---|---|---|
| 15 kN | 2D | CAT-SBCNC-2DM15T | |
| 20 kN | 3D | CAT-SBCNC-3DM20T | |
| 35 kN | 2D / 3D | Confirm against your drawing | |
| 50 kN | 2D / 3D | Confirm against your drawing | |
| 55 kN | 2D / 3D | Confirm against your drawing | |
| 80 kN | 2D / 3D | Confirm against your drawing | |
| 100 kN | 3D | CAT-SBCNC-3DM100T | |
| 120 kN | 2D | CAT-SBCNC-2DM120T |
How to read this table: the four named models are the ones stated on the machine page; where a band has no named model listed, the exact model is confirmed from your section, alloy and wall thickness rather than assumed from the number alone.
Once the control level and force band fit, these are the details that decide whether the machine holds the part across a full shift — and each one maps to a question you should be able to answer before you sign off a specification.
Read your own shop situation against the left column, then use the right column to decide which machine attribute has to be settled in writing before you request a quotation.
| Your shop scenario | What it changes | Attribute to settle before quoting |
|---|---|---|
| High-complexity profile, tight tolerance band | General processing will not hold the part | CNC control — industrial computer with motion controller |
| Ordinary machining task, cost-driven project | You do not need the higher control tier | NC control — PLC with touch panel, lower cost level |
| Bumper beam and multi-angle profile forming | Repeatability across many angles matters more than one-off accuracy | High-precision multi-angle forming with digital rebound adjustment per angle |
| Frequent new part numbers | Setup time becomes the bottleneck, not cycle time | Self-learning program generation and multi-profile memory on the control panel |
| Long unattended production runs | Temperature drift creeps into the tolerance | Oil cooler temperature control within a defined range |
| Line integration with existing planning systems | The machine has to talk to the rest of the plant | Interfaces with robotic material handling and integration with ERP and MES systems |
| Mixed large and small hollow sections | Clamping and support change with section size | High-tensile clamping systems and adjustable chuck lifting |
These are the mechanical and system-level details stated for the 2D/3D CNC stretch bending machine. They matter because they determine how the machine behaves after the first year, when the demo parts are long forgotten.
A fortified frame, reinforced guiding systems and reinforced load-bearing components support the forming stroke.
Ask for the frame and guide design with your force band, not separately from it.The machine combines long-stroke servo cylinders with dual-action servo hydraulics and automated calibration.
Confirm the servo hydraulic configuration matches the control level you selected.High-tensile clamping systems work with digitally synchronized stretch and bend mechanics to form the profile.
Match clamping capacity to your largest section wall thickness.Precision servo drives, optimized hydraulic circuits, low-resistance circuits, intelligent cooling systems and low-power servo actuation reduce demand.
Cost the energy side over a full production year, not per machine hour.A high-performance control panel provides a fully programmable interface, quick setup, real-time feedback and multi-profile memory.
Test multi-profile memory against your actual part mix during acceptance.The machine interfaces with robotic material handling systems and facilitates integration with existing ERP and MES systems.
If this line will be automated later, buy the interface now rather than retrofitting it.You now have the three filters this page is built around: forming configuration, control level and tensile force band. The last step is the one that removes the guesswork — put your part drawing in front of the people who build the machine and let the specification be confirmed against it.
Keep adjacent product options together for a faster catalog comparison.
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View productnc uses a plc with a touch panel and a three-phase asynchronous motor, with lower cost and precision suited to general processing. cnc uses an industrial computer with a motion controller and a servo motor, with higher cost and precision suited to high-precision, high-complexity processing tasks.
start from the part: the 2d models are designated cat-sbcnc-2dm… and the 3d models cat-sbcnc-3dm… on the machine page. confirm which one your geometry needs by sending the drawing, since the choice follows the profile rather than the other way round.
the machine is rated at 15 kn, 20 kn, 35 kn, 50 kn, 55 kn, 80 kn, 100 kn and 120 kn. four models are named on the page — cat-sbcnc-2dm15t, cat-sbcnc-3dm20t, cat-sbcnc-3dm100t and cat-sbcnc-2dm120t. for the remaining bands the exact model is confirmed from your section, alloy and wall thickness.
the stated figure is ±0.1 mm accuracy and tolerance. springback and thermal behaviour vary with material and cycle pattern, so agree the acceptance method with your own inspection tooling as part of the order.
the application areas given for the machine are aviation, aerospace, new energy (electric) vehicles and rail transit, where multi-angle bumper beam and profile forming is required.
send the part drawing together with the section type (hollow or solid), the alloy, wall thickness, bend radius, the target tolerance and your annual volume. those inputs let the correct control level and force band be confirmed instead of estimated, and the machine can then be quoted against your part.