A CNC stirrup bending machine is what turns coiled rebar into finished stirrups—automatically. It straightens, measures, cuts, and bends in one continuous cycle, with one operator managing the entire process. No manual measuring. No marking. And no repositioning.
The YG series CNC stirrup bending machine offers four models covering round steel from 4- 14 mm and deformed rebar from 4- 12 mm. Every model features PLC control, servo-driven systems, and ±1mm length accuracy. For contractors looking for a rebar stirrup bending machine that replaces 4-6 manual workers, the YG series provides proven performance. This stirrup bar bending machine handles bridge, building, tunnel, and precast concrete applications with consistent accuracy across thousands of pieces.
CNC Stirrup Bending Machine Specifications:
| 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 |
Advantages of CNC Stirrup Bending Machine
Every detail of this equipment is engineered to deliver stable, repeatable performance in industrial rebar processing environments.
- Dual-axis servo-driven straightening system: Horizontal and vertical straightening wheels adjust automatically to match bar diameter, working alongside four servo-driven traction wheels to deliver uniform straightening force. This design ensures consistent straightness across the full bar length, which directly improves final bending accuracy.
- High-speed bending and shearing mechanism: The bending arm rotates and extends rapidly under servo control, with a maximum bending speed of up to 1000° per second on higher-capacity models. The shearing unit completes each cut in a single smooth motion, leaving clean, burr-free cut ends that require no secondary finishing. A CNC stirrup bending machine achieves ±1mm length accuracy and ±1° angle accuracy across all production batches, meeting the strict dimensional requirements of high-grade infrastructure projects.
- Intelligent control with fault detection: The mature PLC control system runs stably even in dusty, high-vibration construction site environments. It includes built-in fault identification functions that display error alerts on the touchscreen, helping maintenance teams locate and resolve issues quickly without prolonged downtime.
- Continuous uninterrupted operation: The rebar stirrup bending machine runs non-stop through full production batches without mid-process shutdowns for shape adjustments. Operators can fine-tune bending angles during active production without pausing the line, which keeps output efficiency at a consistently high level even when correcting for material property variations.
Single-Wire vs. Double-Wire: When to Use Each Mode
The YG series supports two bending modes. The choice between them affects production speed and equipment use.
Single-wire mode bends one bar at a time. This is the standard mode for larger diameters and one-off production. The machine processes round steel up to 14mm and deformed bar up to 12 mm, depending on the model.
Double-wire mode bends two bars simultaneously. The CNC rebar bending machine feeds two bars side by side, producing two identical stirrups in the same cycle time. This effectively doubles output without doubling cycle time.
When to use double-wire mode. Double-wire mode is ideal for high-volume production of identical stirrups—the kind of work that precast concrete plants and large construction projects require. If you are producing thousands of identical pieces, double-wire mode cuts production time in half.
Diameter limits in double-wire mode. The machine can bend two round steel bars up to 6- 10 mm or two deformed bars up to 6- 10 mm, depending on the model. For larger diameters, single-wire mode is used.
The practical difference. For a large order of identical stirrups, double-wire mode can reduce production time by 40-50% compared to single-wire mode. For mixed orders with varying sizes, single-wire mode provides the flexibility to change settings between pieces.
How Does the CNC System Maintain Accuracy on Every Piece?
The YG series uses a servo-driven CNC system that controls every step of the bending process.
- Straightening. Horizontal and vertical straightening rollers work with four traction wheels driven by a servo motor. The straightening speed automatically adapts to the bending speed, ensuring smooth, continuous production. This is particularly important for deformed rebar, where the ribs must not be damaged during processing.
- Length measurement and cutting. A digital measuring system feeds the bar to the exact required length. The sliding blade cutting system avoids the accelerated wear that smaller stirrups cause in other designs—a common problem with conventional cutters.
- Bending. The bending arm, driven by a servo motor, rotates and extends at high speed. The YG-3 reaches 1000°/sec, completing complex bends in fractions of a second. The machine can produce continuous stirrups without stopping to adjust mechanical settings.
- PLC control. The system stores multiple bending programs with up to 60 bend angles per shape. The operator designs shapes on the touchscreen, and the CNC rebar bending machine executes them automatically. The system has fault recognition capability—if a jam occurs, it stops automatically to prevent damage.
- The result. Every stirrup is identical. Every angle is accurate to ±1°. Every length is accurate to ±1mm. The machine produces the same quality at 8 AM as at 4 PM.
CNC Stirrup Bending Machine Price
For any team looking to upgrade stirrup production quality and output, a CNC stirrup bending machine delivers a clear return through faster production, consistent accuracy and reduced labor demands. Whether you run a small construction site or a large precast manufacturing facility, the right CNC rebar bending machine will streamline your fabrication process and help you meet tight project deadlines with confidence. As a specialized manufacturer of rebar processing equipment, YG provides tailored solutions and professional guidance to help you select the best stirrup bar bending machine for your specific needs. Reach out to our team today to share your production requirements, and we will provide a detailed configuration recommendation and performance data for your review.
