GF 20 Rebar Ring Making Machine

About GF 20 Rebar Ring Making Machine

What is a GF 20 Rebar Ring Making Machine?

The GF 20 Rebar Ring Making Machine (or Rebar Stirrup Bender) is a specialized, compact workshop machine engineered to bend steel reinforcement bars (rebars) into precise geometric shapessuch as squares, rectangles, circles, triangles, and polygons.

The "20" designation signifies its maximum operational capacity, allowing it to efficiently bend steel bars up to 20 mm in diameter (depending on the material grade, such as Fe 415 or Fe 500/500D). The machine utilizes a high-torque motor, a heavy-duty reduction gearbox, and a rotating bending disk equipped with adjustable pins to shape the rebar cleanly without causing structural micro-cracks.

Why is it Used?

• Eliminates Human Error: Manual bending often results in uneven angles. The GF 20 ensures every single stirrup has exact $90\circ$ or $135\circ$ hooks, which are vital for seismic resistance.

• Massive Productivity Boost: A single GF 20 machine can replace a crew of 56 manual bar benders, producing hundreds of precise rings per hour.

• Reduces Steel Waste: Accurate bending paths prevent over-stretching or snapping the outer ribs of high-tensile TMT bars, keeping material waste to a minimum.

Classification & Core Applications

At Surya Engineering, we categorize the GF 20 platform based on its control mechanisms to match varying project budgets and output demands across PAN India.

1. Machine Classification

• Mechanical Semi-Automatic GF 20: Utilizes a manual limit-switch pin configuration to set the bending angles. Highly reliable, easy to service by site mechanics, and a favorite for rugged on-site conditions.

• Digital/NC Controlled GF 20: Features a digital micro-computer control panel where operators can pre-program multiple angles. Offers extreme precision and faster switching between different ring sizes.

2. Primary Applications

• Column & Beam Stirrups: Fabricating shear reinforcement rings that hold vertical structural rebars firmly in place against buckling.

• Precast Concrete Elements: Mass production of reinforcing rings for precast pipes, retaining walls, box culverts, and electric poles.

• Foundation Footings: Creating specialized hooks and ties used in heavy-duty raft foundations.

Technical Specifications (Surya Engineering Model: SURYA-GF20)

Engineered specifically to withstand the fluctuating power grids and intense dust environments of Indian construction sites.

Installation Guide & IS Testing Standards

To ensure long-term mechanical reliability and operator safety, proper setup and adherence to Indian standards are essential.

Step-by-Step Installation

1. Placement: Place the machine on a level, firm concrete surface. While it does not require deep foundation grouting due to its compact footed design, locking the wheels or heavy positioning is recommended to prevent shifting during high-torque 20mm bends.

2. Electrical Setup: Connect to a stable 3-phase 415V supply (single-phase 220V custom motors are available upon request). Always check the direction of the rotating disk to ensure it aligns with the control arrows.

3. Gearbox Lubrication: Before initial startup, fill the heavy-duty reduction gearbox with standard 90-grade gear oil. Running the machine dry will permanently damage the internal bronze gears.

4. Tooling Setup: Select the correct central mandrel and bending pin sizes relative to your rebar diameter. The gap between the pin and the bar must be adjusted to prevent slipping.

IS Testing Standards Compliance

Every GF 20 unit manufactured by Surya Engineering conforms to strict Indian industrial benchmarks:

• IS 1786 (Compliance Testing): The machine is calibrated to bend rebars up to $180\circ$ without inducing cracks or structural failure along the outer ribs of Fe 500D TMT bars.

• IS 4348: Guidelines followed for the selection and hardening of the steel alloys used in our bending pins, bushes, and central mandrels (hardened up to 55-58 HRC) to prevent premature wear.

• CE & National Safety Norms: Equipped with an instantaneous emergency stop button and a fully enclosed gear drive train to protect the operator.

The Surya Engineering Advantage

• Forged Steel Internal Components: Unlike cheap alternatives that use brittle cast-iron gears, Surya Engineering uses forged, heat-treated alloy steel gears to withstand sudden peak loading.

• Dual Control System: Operable via both a standard control panel and a heavy-duty, waterproof foot pedal, allowing the operator to keep both hands safely on the rebar.

• On-Site Portability: Fitted with heavy-duty nylon/polyurethane wheels, making it easy to move across different floors or sections of a construction site.

PAN India Supply Chain & Location Matrix

Distance should never delay your project milestones. From our primary manufacturing units in the Mumbai Metropolitan Region (MMR), Surya Engineering delivers machines and authentic spare parts straight to your job site anywhere in India.

• Our Infrastructure Base: Sakinaka (Andheri, Mumbai), Khairani Road, and our centralized manufacturing facilities stretching across the Vasai-Virar and Mira Road industrial belts (Thane District, Maharashtra).

• Strategic Delivery & Service Networks:

• Western Region: Mumbai, Navi Mumbai, Pune, Nagpur, Nashik, Aurangabad, Ahmedabad, Surat, Rajkot, Vadodara.

• Southern Region: Bengaluru, Chennai, Hyderabad, Coimbatore, Visakhapatnam, Vijayawada, Kochi.

• Northern & Central Region: Delhi NCR, Gurugram, Noida, Lucknow, Jaipur, Indore, Bhopal, Gwalior.

• Eastern Region: Kolkata, Bhubaneswar, Patna, Ranchi, Raipur, Guwahati.