A CNC rebar bending machine is an all-in-one automated fabrication system built to transform coiled steel bars into finished stirrups in a single pass. It combines straightening, length measuring, bending and cutting functions into one streamlined process, removing the need for separate manual handling between each production step. As a high-performance CNC stirrup bending machine, it handles both round steel and deformed steel bars across multiple diameter ranges, making it suitable for diverse rebar processing requirements. This automatic stirrup bending machine works directly with standard coiled rebar feedstock, just like ordinary straightening machines, so teams do not need extra pay-off racks to run operations. The machine uses a PLC industrial control system paired with a touchscreen interface, so operators can set bending parameters, adjust shapes and monitor production status in real time.
CNC Rebar Bending Machine Parameters:
| Model | YG-1 | YG-2 | YG-3 | YG-4 |
| Single wire(mm) | Round steel 4-10mmDeformed steel bar 4-8mm | Round steel 4-12mmDeformed steel bar 4- 10 mm | Round steel 5-14mmDeformed steel bar 5-12mm | Round steel 4-12mmDeformed steel bar 4- 10 mm |
| Double wire(mm) | Round steel 4-6mmDeformed steel bar 4-6mm | Round steel 4-8mmDeformed steel bar4-8mm | Round steel 5-10mmDeformed steel bar 5-10mm | Round steel 4-8mmDeformed steel bar 4-8mm |
| Max bending angle | ±180° | ±180° | ±180° | ±180° |
| Center pin diameter | 16、18、20 | 16、18、20 | / | 16、18、20 |
| Maximum towing speed | 60m/min | 60m/min | 110m/min | 110m/min |
| Maximum bending speed | 800°/sec | 800°/sec | 1000°/sec | 800°/sec |
| Machine size | 2600*800*1700mm | 3280*1000*1700mm | 3850*1200*2200mm | 3660*1110*1700mm |
| Device color | Yellow(customized) | Yellow(customized) | Yellow(customized) | Yellow(customized) |
| Pieces Processed | ≤2 | ≤2 | ≤2 | ≤2 |
| Air circuit system pressure | ≥0.8mpa | ≥0.8mpa | / | ≥0.8mpa |
| Total Power | 14kw | 20kw | 32kw | 23.5kw |
| Working temperature | -5°C~40° | -5°C~40° | -5°C~40° | -5°C~40° |
| Length accuracy | ±1mm | ±1mm | ±1mm | ±1mm |
| Angle accuracy | ±1° | ±1° | ±1° | ±1° |
| Average power | 4.5KW/h | 5KW/h | 5KW/h | 5KW/h |
| Total weight | 1150KG | 1350KG | 2200KG | 1550KG |
6 Applications of CNC Rebar Bending Machine
- Bridge Construction. Bridge girders, decks, and piers require large quantities of stirrups for shear reinforcement. The YG series processes the rebar sizes and shapes required for bridge projects.
- Building Construction. High-rise buildings and commercial structures require stirrups for columns, beams, and shear walls. The YG series provides the production capacity needed for building projects.
- Tunnel and Subway Construction. Tunnel linings and subway structures require stirrups for reinforcement. The YG series handles the rebar processing needs of underground construction.
- Precast Concrete Plants. Precast elements require consistent, high-quality stirrups for beams, columns, slabs, and wall panels. The YG CNC stirrup bending machine provides the production capacity needed for precast operations.
- Rebar Processing Centers. Centralized rebar processing facilities serve multiple job sites. The YG series provides the throughput needed for high-volume production.
- Infrastructure Projects. Roads, railways, pipelines, and other infrastructure projects require stirrups for foundations, retaining walls, and other concrete structures.
7 Features of CNC Rebar Bending Machine
- Straightening system. Two sets of straightening rollers (horizontal and vertical) work with four traction wheels driven by a servo motor. This ensures the rebar is straightened to precision before bending.
- Bending and cutting mechanism. The bending arm is driven by a servo motor that rotates and extends at high speed. The cutting system uses a sliding blade design that avoids the accelerated wear that smaller stirrups cause.
- PLC control system. The machine uses a stable, mature control system with fault recognition capability. The operator designs shapes on the touchscreen, and the system stores up to 60 bend angles per shape in a graphic library.
- Double-wire capability. Models YG-1 through YG-4 support double-wire operation for smaller diameters. The CNC stirrup bending machine bends two bars simultaneously in the same cycle time, effectively doubling output.
- ±1mm length accuracy and ±1° angle accuracy. Every stirrup meets specification. No rework. No waste.
- Continuous production. The machine produces stirrups without stopping to adjust mechanical settings. The operator loads a new design, and the machine runs until the batch is complete.
- Touchscreen operation. The operator controls the machine through a touchscreen interface. No complex programming required.
How Does the CNC System Ensure Precision?
The YG series rebar stirrup bender uses a CNC servo control system that manages the entire bending process.
Straightening. Two sets of straightening rollers—horizontal and vertical—work together with four traction wheels driven by a servo motor. This ensures the rebar is straightened to the required precision before bending begins. The straightening process is particularly important for deformed rebar, where the ribs must not be damaged during processing.
Bending and cutting. The bending arm, driven by a servo motor, rotates and extends at high speed. The cutting mechanism completes the cut in a single rapid action. The combination of servo-driven precision and high-speed mechanical action ensures consistent bend angles and cut lengths on every piece.
Control system. The automatic stirrup bending machine uses a mature, stable PLC control system with fault recognition capability. The operator designs shapes on the touchscreen, and the system stores up to 60 bend angles per shape in a graphic library for repeat production.
The system can produce continuous stirrups without stopping to adjust mechanical settings.
Accuracy. The YG series holds ±1mm length accuracy and ±1° angle accuracy. This precision means every stirrup fits in the formwork without adjustment—eliminating the rework that manual methods often require.
6 FAQs About CNC Rebar Bending Machine
A: The YG-1 handles round steel 4- 10 mm and deformed bar 4- 8 mm in single-wire mode. The YG-2 handles round steel 4- 12 mm and deformed bar 4- 10 mm. The YG-3 handles round steel 5- 14 mm and deformed bar 5- 12 mm. The YG-4 handles round steel 4- 12 mm and deformed bar 4- 10 mm.
A: All models achieve a ±180° bending angle, allowing bends in either direction.
A: The YG series delivers ±1mm length accuracy and ±1° angle accuracy.
A: Yes. All models support double-wire operation for smaller diameters, bending two identical bars simultaneously.
A: The control system can store multiple shapes with up to 60 bend angles per shape in the graphic library.
A: Changeover is done through the touchscreen. The operator loads a new program and the machine is ready to run. No mechanical adjustments required.
Rebar Stirrup Bender Price
YG Machinery has a proven track record of supplying CNC rebar bending machines to construction projects worldwide. The company provides technical support and spare parts availability for international customers.
If you need a CNC rebar bending machine for stirrup production, the YG series provides proven performance. Contact us with your rebar diameter, production volume, and bending requirements. We will recommend the right model for your operation. Get a free quote today.
