Electric Asymmetrical 3-Roll Plate Rolling Machine for Circular Air Duct
Asymmetrical 3-Roll Initial Pinch Design: Engineered for rapid, uniform rolling of galvanized steel, aluminum, and stainless steel plates into circular HVAC ducts, chimney flues, and exhaust pipes.
High-Rigidity 40Cr Tempered Rollers: Three solid roller shafts (standard φ72 mm diameter) undergo high-temperature quenching and tempering to guarantee high roundness and prevent deflection.
Overview & Asymmetrical 3-Roll Mechanics
The Electric Asymmetrical 3-Roll Plate Rolling Machine is an essential, high-efficiency plate bending machine designed specifically for ventilation duct workshops, chimney manufacturing, and sheet metal cylindrical forming[cite: 109]. By utilizing an asymmetrical three-roller initial-pinch arrangement, the top and lower-front rolls pinch the sheet while the lower-rear offset roll performs continuous bending[cite: 109].
Engineered for metal sheets up to 1.5 mm / 2.0 mm thickness, this machine easily forms galvanized round ductwork, carbon steel shells, and stainless steel cylinders down to a minimum diameter of 100 mm[cite: 109]. Its manual swing-out upper roller drop-end mechanism ensures rapid, effortless workpiece removal after rolling[cite: 102].
Precision Structural Features & Workstations
- Solid 40Cr Quenched Rollers: All three roller shafts (standard φ72 mm diameter) are manufactured from solid 40Cr high-temperature quenched and tempered steel to ensure zero bending deflection under load[cite: 109].
- Eccentric Roller Angle Adjustment: Smooth manual handwheel synchronously adjusts the side roll elevation and angle to flexibly dial in target cylinder diameters[cite: 109].
- Heavy-Duty Industrial Motor Drive: Powered by a Nanjing Wolpu electric motor coupled directly to a cast aluminum worm reduction gearbox for high torque and low-noise feeding[cite: 105, 109].
- Bidirectional Foot Switch Control: Mobile foot pedal provides instant forward, reverse, and emergency stop control, keeping the operator’s hands free to support long sheet metal blanks[cite: 107, 109].
Engineering Blueprint & Technical Parameters
Circular Galvanized Ducting Samples, Workstation Breakdown & Parameter Table[cite: 109]
Technical Parameters (Asymmetrical 3-Roll Series)
| Model | Max. Thickness (mm) | Max. Width (mm) | Min. Diameter (mm) | Roller Diameter (mm) | Power (kW) | Weight (kg) | Dimensions (L×W×H mm) |
|---|---|---|---|---|---|---|---|
| 1.5/2*1000 | 1.5 / 2.0 | 1000 | 100 | φ72 (40Cr Solid) | 1.5 | 210 | 1540 × 550 × 1100 |
| 1.5*1300 | 1.5 | 1300 | 100 | φ72 (40Cr Solid) | 1.5 | 240 | 1800 × 550 × 1100 |
| 1.5*1500 | 1.5 | 1500 | 100 | φ72 (40Cr Solid) | 1.5 | 270 | 2000 × 650 × 1100 |
Workshop Assembly & Detail Gallery
Drop-End Unloading Bearing & Diameter Adjustment Handwheel[cite: 102]
Mass Production Lineup in Factory Workshop[cite: 103]
Rigid Floor Base & Solid Alloy Steel Rolls[cite: 104]
Nanjing Wolpu Motor & Cast Aluminum Worm Gearbox[cite: 105, 109]
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