Used Steel Bar Straightening Machine – Model GX4-12
A used rebar straightening machine is specifically designed to restore bent, twisted, or deformed steel reinforcement bars (rebars) to their original, straight form. This equipment is widely used in construction, metal fabrication, and recycling industries to improve material efficiency and reduce waste.
Technical Specifications
| Specification | Details |
|---|---|
| Model | GX4-12 |
| Rebar Diameter Range | 4–12 mm |
| Working Speed | 30 meters per minute |
| Cutting Length (Optional) | 700–6000 mm |
| Motor Power | 4KW + 4KW |
| Packing Dimensions | 1250 × 750 × 1150 mm |
| Machine Weight | 550 kg |
Main Components
Feeding System
Guides deformed rebars into the straightening section, ensuring smooth and controlled entry.
Straightening Rollers
Multiple high-strength rollers, arranged in a staggered (S-shaped) path, apply calibrated pressure to correct bends and curves.
Drive Mechanism
Powered by an electric motor, the system draws the rebar through the rollers at a consistent speed for uniform results.
Optional Cutting Unit
Some models include an integrated automatic shear for cutting rebars to the desired length after straightening.
Straightening Process
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Feeding
Bent rebars are fed into the machine and securely positioned between the rollers. -
Straightening
The rebar is repeatedly bent and stretched as it passes through the staggered rollers, eliminating curvature and distortion via plastic deformation. -
Discharge
Straightened rebars are automatically released, ready for cutting or direct reuse on-site.
Operating Principles
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Plastic Deformation
The machine applies controlled force to reshape the rebar permanently without compromising its structural integrity. -
Roller Arrangement
Staggered rollers ensure even pressure from all angles, allowing smooth and accurate straightening.
Compatible Materials
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Diameter Range: Typically supports rebars from 4mm to 20mm in diameter (varies by model).
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Steel Types: Suitable for plain and ribbed rebars, including grades like HRB335, HRB400, and similar standards.
Key Advantages
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Efficient Operation: Much faster than manual straightening, increasing processing speed and saving labor.
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Material Savings: Ideal for recycling scrap rebars and reducing construction site waste.
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Adjustable Settings: Roller pressure and spacing can be fine-tuned to handle different steel grades and diameters.
Maintenance Recommendations
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Inspect Rollers: Regularly check for wear and replace damaged rollers as needed.
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Lubricate Components: Apply proper lubrication to moving parts to reduce friction and extend the machine’s life.
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Avoid Overloading: Operate within recommended limits to prevent motor strain or damage.
