In modern construction projects, reinforced concrete structures are widely used in buildings, bridges, tunnels, highways, and prefabricated components. Steel stirrups are an important part of reinforcement systems because they help improve structural stability and provide stronger support for concrete structures. With the development of construction automation, CNC steel processing equipment has become an important solution for improving reinforcement production efficiency.
A professional stirrup bender is designed to automatically straighten, measure, cut, and bend steel wire or steel coils into different stirrup shapes. Through PLC control technology and computer programming, operators can easily set production parameters and complete continuous automatic processing. The machine is widely used in building construction, bridge projects, tunnel engineering, railway construction, precast concrete factories, and steel reinforcement processing plants.
However, most people don’t know how to use this machine and don’t know how to judge whether a stirrup bender is working normally or has a Fault. This blog will tell you the details. If you are interested, please contact YG immediately for more information.
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YG Stirrup Bender Parameter
| 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 4-10mm | Round steel 5-14mmDeformed steel bar 5-12mm | Round steel 4-12mmDeformed steel bar 4-10mm |
| 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 |
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How Does a Stirrup Bender Work? 6 Processing Steps
The working process of a CNC steel bending machine includes several automatic steps. Each system works together to transform steel coils into finished stirrups.
1. Steel Material Feeding: Starting the Automatic Processing
The first step is feeding the steel material into the machine. Unlike traditional methods that require manual preparation and adjustment, modern equipment can directly process coil steel bars.
The feeding process includes:
- Placing steel coil material
- Guiding the steel wire into the machine
- Automatically controlling feeding speed
The feeding system ensures stable material transportation and reduces manual operation. A reliable automatic stirrup bending machine can continuously supply steel materials, which greatly improves production efficiency for large projects.
2. Automatic Straightening: Making Steel Bars Ready for Bending
Steel coils usually have curved shapes after production and transportation. Before bending, the material needs to be straightened.
The straightening system uses rotating rollers to:
- Remove material deformation
- Adjust steel bar straightness
- Ensure accurate processing
This step is essential because uneven steel materials may affect the final stirrup shape.
3. Digital Measurement: Ensuring Accurate Length Control
After straightening, the machine measures the required steel length.
The CNC control system calculates:
- Feeding distance
- Cutting position
- Stirrup size
Operators only need to input the required parameters through the touch screen. The system automatically completes the measurement process.
4. Hydraulic Cutting: Fast and Precise Steel Cutting
After reaching the required length, the machine automatically cuts the steel material.
The hydraulic cutting system provides:
- Strong cutting force
- Smooth operation
- Long service life
The sliding cutter design helps reduce wear problems, especially when producing small-size stirrups. This improves machine stability and reduces maintenance frequency.
5. Automatic Bending: Creating Different Stirrup Shapes
The bending system is the core working part of the machine.
According to programmed parameters, the equipment automatically bends steel into different shapes.
Common products include:
- Square stirrups
- Rectangular stirrups
- Closed stirrups
- Custom reinforcement shapes
6. Finished Product Collection and Production Management
After bending, finished stirrups are collected for construction use.
The operator can monitor:
- Production quantity
- Machine status
- Processing speed
- Error information
The intelligent management system helps factories organize production more efficiently.
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Important Usage Tips: How to Operate a Stirrup Bender Correctly
Although modern equipment is easy to operate, proper usage is important to maintain performance and safety.
1. Check Materials Before Operation
| Before starting the machine, operators should confirm: | Using unsuitable materials may cause: |
| Steel bar specifications Material quality Coil condition | Feeding problems Bending errors Increased machine wear |
Always ensure the material matches the machine requirements.
2. Set Correct Production Parameters
| Before production, operators need to input: | Incorrect settings may result in: |
| Stirrup size Bending angle Production quantity Material diameter | Wrong dimensions Material waste Production delays |
Operators should carefully check parameters before starting automatic processing.
3. Keep the Machine Clean
Steel processing produces dust and metal particles.
Regular cleaning should include:
- Removing metal debris
- Cleaning feeding areas
- Checking moving parts
A clean working environment helps prevent equipment failures.
4. Regularly Check Lubrication System
Moving components require proper lubrication.
| Operators should inspect: | Insufficient lubrication may cause: |
| Bearings Rotating parts Sliding components | Increased friction Abnormal noise Faster component wear |
5. Do Not Overload the Machine
Each machine has a designed working range. Avoid processing materials beyond specifications.
Overloading may cause:
- Motor overheating
- Hydraulic problems
- Reduced machine lifespan
Following operating instructions ensures safer production.
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How to Judge Whether a Stirrup Bender Is Working Normally or Has a Fault?
Regular inspection helps identify problems early and prevents production interruptions. The following methods can help operators judge machine condition.
1. Check Production Accuracy
| A normally operating machine should produce stirrups with: | Possible problems include: | These issues may indicate problems with: |
| Correct dimensions Accurate angles Consistent shapes | Different sizes between products Incorrect bending angles Uneven shapes | CNC settings Measurement system Bending components |
2. Observe Feeding Performance
The feeding system should work smoothly.
| Normal condition: | Possible faults: |
| Stable steel movement No slipping Continuous feeding | Material cannot enter correctly Feeding speed becomes unstable Steel gets stuck |
Operators should stop the machine and check the feeding system.
3. Listen for Abnormal Sounds
During operation, operators should pay attention to machine sounds.
| Normal operation: | Warning signs: | These may indicate: |
| Smooth motor sound Stable mechanical movement | Strong vibration Metal collision sounds Sudden noise changes | Loose parts Mechanical damage Poor lubrication |
4. Check Hydraulic System Performance
The hydraulic system controls important functions such as cutting and bending.
| Normal hydraulic performance: | Possible problems: |
| Stable pressure Smooth movement No oil leakage | Weak cutting force Slow bending speed Hydraulic oil leakage |
Regular hydraulic inspection can prevent major failures.
5. Monitor Control System Information
Modern equipment uses PLC and touch screen control.
Operators should check:
- Error messages
- Parameter settings
- Sensor feedback
If the machine displays abnormal information, professional inspection may be required.
6. Inspect Wearing Parts Regularly
Some parts naturally wear during long-term operation.
Important inspection areas include:
- Cutting blades
- Bending components
- Rollers
- Electrical connections
Replacing worn parts in time can improve production stability.
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As construction projects become larger and more demanding, efficient reinforcement processing equipment has become increasingly important. A modern stirrup bender provides an intelligent solution for producing high-quality steel stirrups with less labor and higher efficiency. Whether you are operating a construction company, reinforcement factory, or infrastructure project, choosing the right automatic stirrup bending machine can significantly improve productivity. If you are comparing equipment options or want to learn more about the automatic stirrup bending machine price, contact YG for professional recommendations.