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STON CNC panel bender is an automatic panel bending center that completes multi-side bends in one clamping. It helps sheet metal factories boost output, stabilize quality, and reduce dependence on highly skilled press brake operators.
| STON-A2 | STON-B2 | STON-C2 | STON-D2 | STON-E2 | |
| Max. bending speed | 0.2s/knife | 0.2s/knife | 0.2s/knife | 0.2s/knife | 0.2s/knife |
| Max. bending length (CM) | 1000*1000 | 1400（1600）*1250 | 2000*1500 | 2500*1500 | 3200*5100 |
| Max. bending height (mm) | 170/300 | 170/300 | 170/300 | 170/300 | 170/300 |
| Min. bending thickness (mm) | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 |
| Min. four-sided forming size(mm) | 140×190 | 140×190 | 140×190 | 140×190 | 140×190 |
| Single-sided forming size(mm) | 140 | 140 | 140 | 140 | 140 |
| Rated voltage | 380V | 380V | 380V | 380V | 380V |
| Max. bending thickness (mm) | Stainless steel 1.2 Cold plate 2.0 Aluminum plate 2.5 |
Stainless steel 1.2 Cold plate 2.0 Aluminum plate 2.5 |
Stainless steel 1.2 Cold plate 2.0 Aluminum plate 2.5 |
Stainless steel 1.2 Cold plate 2.0 Aluminum plate 2.5 |
Stainless steel 1.2 Cold plate 2.0 Aluminum plate 2.5 |
| Dimensions (CM) | L* W *H 370 * 150 * 280 |
L* W *H 450 * 200（220） * 280 |
L* W *H 510 * 270 * 280 |
L* W *H 570 * 310 * 280 |
L* W *H 700 * 380 * 280 |
| Feeding table | Brush, universal ball | Brush, universal ball | Brush, universal ball | Brush, universal ball | Brush, universal ball |
| Hinge knife | Standard | Standard | Standard | Standard | Standard |
| Advanced command | Standard | Standard | Standard | Standard | Standard |
| Bias load detection function | Standard | Standard | Standard | Standard | Standard |
| Bias load follow-up function | Standard | Standard | Standard | Standard | Standard |
| Plate thickness detection function | Standard | Standard | Standard | Standard | Standard |
| Automatic feeding interface | Standard | Standard | Standard | Standard | Standard |
| High speed control module | Standard | Standard | Standard | Standard | Standard |
The STON CNC panel bender is ideal for thin to medium sheet metal parts with multiple flanges and high appearance requirements. From cabinet doors and side panels to drawers and stainless steel worktops, it delivers consistent angles and clean edges for demanding industrial customers.
The STON CNC panel bender combines intelligent bending sequences, servo motion and robust construction to deliver high output with stable quality. The following key features help you get more finished panels with less labor and downtime.
Complete multi-side bends in a single clamping
Eliminate repeated part repositioning on press brakes
Shorter cycle time and lower risk of handling damage
Handles doors, side panels, drawers and covers on one machine
Fast tool and program change for different sizes and batches
Ideal for mixed-model production and frequent order changes
Servo-driven axes with closed-loop control
Automatic compensation for material thickness and springback
Consistent bending angles across the whole batch
Optimized bending sequence protects visible surfaces
Reduced scratches on painted or stainless steel sheets
Less manual rework and polishing after bending
Graphical interface with clear step-by-step guidance
Store and recall bending programs for repeat orders
Short learning curve for new operators
Can work stand-alone or in automatic production lines
Optional loading/unloading and robotic handling systems
Smooth integration with punching and laser cutting equipment
In modern sheet metal factories, every panel must meet strict dimensional and appearance standards. The STON CNC panel bender uses servo control and optimized tooling to keep flange height, angle and straightness within tight tolerances. Stable bending quality reduces scrap, avoids downstream assembly problems and protects your brand reputation in the market.
The panel bender adopts a heavy-duty welded frame with stress relief treatment to minimize deformation during long-term operation. High-precision linear guides and ball screws support smooth axis movement, ensuring accurate positioning even when bending large panels for many years.
The panel bender adopts a heavy-duty welded frame with stress relief treatment to minimize deformation during long-term operation. High-precision linear guides and ball screws support smooth axis movement, ensuring accurate positioning even when bending large panels for many years.
Upper and lower bending blades are driven by servo systems to perform upward and downward bends with controlled speed and angle. Different bending tools can be configured according to flange height, radius and material characteristics, allowing you to handle thin painted sheets and thicker structural parts on the same machine.
Automatic blank clamps hold the sheet securely during the entire bending cycle, while positioning devices square the panel and set reference edges. This prevents part slippage, improves repeatability and reduces angle deviation caused by manual misalignment.
The worktable supports smooth loading and unloading of blanks through ball tables or brush tables, reducing friction and scratches. Optional loading and transfer devices can automatically move panels into and out of the bending area, shortening non-productive time between cycles.
The electrical cabinet integrates branded servo drives, PLC, safety modules and CNC control. Clear wiring layout, labelled terminals and easy access design simplify troubleshooting and maintenance. The software supports remote diagnostics and program updates when needed.
Key motion components are equipped with centralized lubrication points to reduce wear and extend service life. Daily inspection and maintenance can be completed quickly through easily accessible doors and covers, keeping the panel bender running at high efficiency with minimal downtime.
We believe in building strong, transparent relationships with our clients. That’s why we invite our partners to visit our state-of-the-art manufacturing facility and see our production process up close.
AnthonyProcurement Manager, HVAC
Component Factory (Germany)
JeffreyFactory Owner, Stainless Kitchenware
Manufacturer (USA)
Jared– Operations Director, Electrical Cabinet
Factory (Canada)
A panel bender is ideal for doors, side panels, covers, drawers, cabinet bodies and other sheet metal parts with multiple flanges. It is widely used in electrical cabinets, lockers, furniture, kitchen equipment and HVAC industries.
In most factories, the panel bender can handle 70–80% of repetitive panel parts. For very thick plates, long profiles or special shapes, press brakes may still be required. We can analyze your part list and suggest a balanced configuration.
Typical configurations handle thin to medium-thickness carbon steel, stainless steel and aluminum sheets used for cabinets, doors and similar products. Exact capacity depends on the model; our engineers will recommend the right machine according to your drawings.
Thanks to the graphical interface and saved programs, most operators can master daily operation after a short training period during installation. Complex new parts can be programmed with the support of our technicians when needed.
Yes. The machine can be connected with turret punch presses, laser cutting units and automatic loading/unloading systems to form a flexible sheet metal production line, from blanking to finished panels.
STON offers lifetime technical support, remote diagnostics, spare parts supply and on-site service when necessary. Our service team helps you solve problems quickly and keep your machine running at high efficiency.
Send us your drawings, material specifications, target output and workshop layout. We will propose a suitable model, configuration and quotation based on your real production requirements.
A CNC panel bender is a type of sheet metal bending equipment that automatically bends metal panels into precise shapes using programmable servo-controlled arms and blades. Unlike traditional press brakes, a CNC panel bender performs both up and down bending operations in one cycle, offering higher precision, faster cycle times, and less manual handling.
Our automatic panel bender is compatible with a wide range of sheet metal materials, including stainless steel, cold-rolled steel, galvanized steel, and aluminum alloy. It can process material thicknesses from 0.15mm to 2.0mm, making it ideal for both thin-gauge electronics enclosures and heavy-duty industrial panels.
While both machines are used for bending sheet metal, a CNC panel bending machine offers automated folding from all directions without needing to reposition the part manually. This improves bending consistency, reduces setup time, and is better suited for high-volume or multi-variety batch production. In contrast, press brakes require manual positioning and multiple tool changes.
Yes. Our sheet metal panel benders can be seamlessly integrated with robotic arms, truss loading/unloading systems, and automated stacking lines. This enables full production line automation—from raw material feeding to finished part output—boosting efficiency and reducing labor costs.
CNC sheet metal bending equipment is widely used in:
Medical equipment housings、HVAC panels and ventilation units、Electrical cabinets and distribution boards、Toolboxes, shelves, and lighting fixtures
These industries demand high-precision, repeatable bends, and our panel bender is built to meet those expectations.
Whether you're upgrading an existing line or starting a new project, STON will customize a CNC solution for your production.
