The spiral blade forming machine can produce blades for screw conveyors and augers, widely used in agriculture, environmental protection, mining, chemical, and pharmaceutical industries.
These blades rotate to generate friction with materials, pushing them forward while also achieving mixing and stirring functions—ensuring efficient and consistent material handling. To meet varying industrial needs, the machine supports multiple sizes and specifications.
We offer two models: a continuous spiral blade forming machine for producing long, seamless blades ideal for high-volume production, and a single-pitch spiral blade forming machine for crafting individual blade segments used in customized screw structures.
Spiral flight forming machine for sale
We offer two models of spiral flight forming machines for sale, designed to meet different production needs.
The single-pitch spiral blade forming machine is ideal for producing individual flight segments. To operate, it requires confirmation of the blade material, outer diameter, inner diameter, and pitch—making it suitable for customized screw structures.
The continuous flight forming machine, on the other hand, is used for forming long, uninterrupted spiral blades, commonly needed in high-output applications. For this model, you’ll need to confirm the blade thickness and width.
Both machines are built for precision and durability, providing efficient solutions for industries such as agriculture, mining, and waste handling.
Single piece spiral blade molding machine
Single-Piece Spiral Blade Molding Machine (also called one-piece screw flight forming machine) is purpose-built to cold-form a single flat metal plate into a continuous spiral blade without any welds. It is widely used to manufacture screw flights for screw conveyors, drilling equipment, agricultural machines, feed plants, cement/ grain storage, etc.
Core capabilities
- One-piece forming: a single flat plate is rolled into a constant-pitch or variable-pitch spiral in one pass—no subsequent welding, higher strength, smoother surface.
- Material versatility: handles 2–12 mm thick carbon steel (Q235, Q345), stainless steel (304, 316L) and high-hardness wear plates (NM360/400/500, Hardox 450/500).
- Due to varying hardness, the machine uses interchangeable molds and software compensation to ensure both 30mm carbon steel and 8mm wear plate form to the same OD, ID, and pitch.
- Diameter range: most models cover
- Outer diameter 200 mm ×2 – 700 mm ×2 (i.e. 400–1400 mm).
- Inner bore ≥12 mm (small) or ≥20 mm (large).
- Pitch 50–800 mm (continuously adjustable).
Advantages
- No welds: one-piece flights give better strength, wear resistance and dynamic balance than segmented & welded flights.
- Material savings: continuous cold forming saves 8–12 % material versus traditional “fan-cut & weld” methods.
- High productivity: 1–3 min per flight (depending on size).
- Easy operation: one-button parameter recall; an average operator is productive in 30 min.
Single piece spiral blade forming machine parameters
| Model | 250–12 | 350–16 | 350–25 | 500–16 | 800–25 |
|---|---|---|---|---|---|
| Processing diameter (mm) | 200×2 + inner-shaft Ø | 300×2 + inner-shaft Ø | 300×2 + inner-shaft Ø | 400×2 + inner-shaft Ø | 700×2 + inner-shaft Ø |
| Processing pitch (mm) | 100–500 | 100–700 | 100–700 | 100–1000 | 200–1500 |
| Maximum sheet thickness (mm) | Carbon steel 12 Stainless steel 10 Wear plate 6 | Carbon steel 16 Stainless steel 12 Wear plate 8 | Carbon steel 25 Stainless steel 20 Wear plate 16 | Carbon steel 16 Stainless steel 12 Wear plate 8 | Carbon steel 25 Stainless steel 16 Wear plate 16 |
| Mold height (mm) | 260 | 355 | 355 | 500 | 850 |
| Power (kW) | 4 | 5.5 | 7.5 | 7.5 | 11 |
| Power supply | 380V, 50 Hz | 380V, 50 Hz | 380V, 50 Hz | 380V, 50 Hz | 380V, 50 Hz |
| Appearance size (mm) | 2200×500×1200 | 2700×550×1200 | 2700×550×1200 | 2900×650×1350 | 2900×650×1350 |
Continuous flight forming machine
Continuous Flight Forming Machine (continuous-type spiral-blade former) is a roll-forming line that takes a long, narrow strip of steel and continuously produces a seamless helical flight of any length without stops or welds.
It is ideal for high-volume production of small-to-medium diameter auger flights used in feed screws, food-processing augers, micro-conveyors, medical extruders, 3D-printer filament drives, small metering pumps, etc.
Key features
- Strip range
- Thickness: 2 – 6 mm (carbon, stainless, spring steel, aluminum, brass)
- Strip width: 15 – 150 mm (determines the finished flight OD once wrapped)
- Flight size capability (typical for this class)
- Outer diameter: ≈ 20 – 300 mm
- Inner diameter: ≥ 8 mm (set by the mandrel diameter)
- Pitch: freely adjustable while running, usually 0.5 – 3 × OD
- Machine layout & process
- Decoiler → straightener → servo roll-feed → 3-roll or 4-roll forming head
- Mandrel (inner shaft) is driven forward at a controlled axial speed; the strip is simultaneously rolled around it and twisted to the required pitch.
- Continuous output: flights are cut to length with an on-the-fly cold-saw or shear, resulting in a single, seamless flight with no weld seams.
- Drive & control
- Servo-controlled feed roll + variable-speed mandrel drive keep pitch error < 1 mm/m.
- PLC with HMI recipe storage for different strip widths / thicknesses / pitches.
- Quick-change mandrels (5 – 10 min) allow fast switch between diameters.
Advantages
- No welds → higher fatigue life, smoother surface, easier cleaning (food & pharma).
- Very high yield: up to 30 m of finished flight per minute on small sizes.
- Minimal material waste; strip off-cuts < 1 %.
- Compact footprint (≈ 2 m × 1 m) suitable for cell manufacturing.
In short, a Continuous Spiral Blade Forming Machine is the go-to solution when you need long, weld-free auger flights in small diameters at high throughput, handling strip thicknesses from 2 mm up to 6 mm and strip widths from 15 mm to 150 mm.
Continuous spiral blade forming machine parameters
| Item / Model | LX120-5 | LX40-5 | LX150-5 |
|---|---|---|---|
| Applicable Sheet Material | SPHC | SPHC, SPHD, SPHE | SPHC, SPCC |
| Voltage | 380 V | 380 V | 380 V |
| Main-Motor Power | 15 kW × 2 | 15 kW × 2 | 15 kW × 2 |
| Total Power | 26 kW | 15 kW | — |
| Single-Side Strip Width | 20 – 120 mm | 15 – 40 mm | 20 – 150 mm |
| Sheet Thickness | 2 – 6 mm | 2 – 4 mm | 2 – 6 mm |
| Rolled Blade Inner-Hole Tolerance | ≤ ±3 mm | ≤ ±3 mm | ≤ ±3 mm |
| Rolled Blade Outer Diameter | 60 – 750 mm | 40 – 300 mm | 80 – 800 mm |
| Outer-Diameter Tolerance | ≤ ±5 mm | ≤ ±5 mm | ≤ ±5 mm |
| Rolled Blade Pitch | 50 – 800 mm | 50 – 800 mm | 50 – 800 mm |
| Pitch Tolerance | ±5 mm | ±5 mm | ±5 mm |
| Working Mode | Two rollers operating simultaneously | Two rollers operating simultaneously | Two rollers operating simultaneously |
| Adjustment Method | Mechanical screw adjustment | Mechanical screw adjustment | Mechanical screw adjustment |
| Equipment Composition | • Spiral blade main machine • Mechanical loading table • Hydraulic shear • Power distribution cabinet | • Spiral blade main machine • Mechanical loading table • Hydraulic shear (with 2 m platform) • Power distribution cabinet | • Spiral blade main machine • Mechanical loading table • Hydraulic shear (with 2 m platform) • Power distribution cabinet |
| Total Weight | 4 t | 4 t | 5.5 t |
Working principle of the spiral blade forming machine
The spiral blade forming machine operates by using a mechanical or hydraulic system to push raw material into a specially designed mold. Under the guidance of the mold and the applied pressure, the material undergoes plastic deformation, gradually forming into a spiral blade.
Through this controlled forming process, the machine produces blades with the required diameter, pitch, and dimensions, ensuring uniform shape and structural strength.
This principle allows for efficient and precise production of spiral blades used in augers, screw conveyors, and other industrial applications.
Influence of material hardness on forming
- Higher hardness → higher yield strength → larger roll force and smaller reduction required; otherwise cracking or premature roll wear occurs.
- Higher hardness → greater spring-back → control system adds “over-bend compensation”; wear plates need an extra 2–3° over-bend angle.
- Stainless steel is tough → reduce feed speed to avoid edge tearing; use polyurethane pressure rollers to prevent surface scratches.
Conclusion
Choose our Spiral blade forming machine and gain a high-efficiency, precision, and long-lasting “one-stop” flight-manufacturing expert.
Invest in one machine today, and tomorrow you will enjoy stable output, dramatically reduced material waste, and flawless product quality—turning every revolution of the spiral into greater profit and competitive strength.
In addition, we offer a full range of other metal-processing machines—feel free to explore and order!