Shuliy shipped a model 60-4 screw flight cold rolling machine to a South African fabricator for producing continuous seamless spiral blades from SPHC strip 12–60 mm wide and 1.5–3 mm thick.
The 19 kW line forms flights with outer diameters of 30–200 mm and pitches of 20–300 mm, holding inner hole, outer diameter, and pitch tolerances within ±3 mm for small screw conveyors and feeding devices.
Shuliy has just shipped a screw flight cold rolling machine, model 60-4, to a customer in South Africa. The continuous line cold-rolls screw flights from SPHC strip 12–60 mm wide and 1.5–3 mm thick, producing seamless spiral blades with an outer diameter of 30–200 mm and a pitch of 20–300 mm — holding a tolerance of ±3 mm on inner hole, outer diameter, and pitch within a total installed power of only 19 kW.
What Did the South Africa Customer Need?
The buyer is a South African fabricator that makes small-diameter screw conveyors and feeding devices. Their product range sits squarely in the thin-gauge zone: screw flights rolled from strip 1.5–3 mm thick, with finished outer diameters between 30 and 200 mm and frequent pitch changes between 20 and 300 mm.
Outsourcing this flighting meant long lead times and no control over pitch accuracy. Ordering the 60-4 cold rolling machine brings the whole process — feeding, rolling, shearing — into their own workshop.
Why Choose a Screw Flight Cold Rolling Machine for Thin Flighting?
Spiral blades are made by two main processes. A screw flight cold rolling machine feeds a steel strip through roller dies and forms a seamless, unbroken spiral at full line speed — the standard choice for plate under roughly 6 mm. Sectional (single-piece) die forming presses thick plate segment by segment and suits 8–30 mm material. At 1.5–3 mm, cold rolling wins on speed, surface finish, and consistency — the two routes are compared in our guide on how to choose a suitable auger flight forming machine.
60-4 Screw Flight Cold Rolling Machine Specifications
| Parameter | Value |
| Modeli | 60-4 |
| Forming process | Continuous cold rolling |
| Levha malzemesi | SPHC |
| Tek taraf genişliği | 12–60 mm |
| Plate thickness | 1.5–3 mm |
| Dış bıçak çapı | 30–200 mm |
| Bıçak dişi | 20–300 mm |
| Inner hole / outer diameter / pitch error | ≤ ±3 mm |
| Adjustment mode | Mechanical screw |
| Toplam ekipman gücü | 19 kW |
What Does the 19 kW Line Include?
- Spiral blade forming machine host — the cold-roll mill that shapes the strip into a continuous screw flight
- Mechanical loading table — feed the SPHC strip steadily into the rolls
- Hydraulic shear — cut the continuous flight to length after rolling
- Power distribution cabinet — centralized wiring and protection for the whole line
Pitch is set through a mechanical screw adjustment rather than a hydraulic system: the operator dials in the value, and the setting holds repeatably across the batch. For a shop switching between 20–300 mm pitches on small flights, this keeps changeovers simple and maintenance minimal.
FAQ About Screw Flight Cold Rolling Machine for South Africa
What plate thickness can the model 60-4 roll?
The 60-4 ordered in South Africa cold-rolls SPHC strip from 1.5 to 3 mm thick, 12 to 60 mm per side; Shuliy also offers continuous models for strip up to 6 mm.
What products does a cold rolled screw flight fit?
Flights from 30 to 200 mm outer diameter with pitches of 20 to 300 mm — the size range used in mini screw conveyors, dosing feeders, and feeding augers for packaging and grain equipment.
How accurate is a cold rolled screw flight?
The 60-4 holds inner hole diameter, outer diameter, and pitch each within ±3 mm, which keeps the flight concentric on the shaft after welding.
See the Full Screw Flight Forming Series
The 60-4 is one configuration of our spiral bıçak şekillendirme makinesi series — screw flight cold rolling machines for thin strip and sectional hydraulic machines for plate up to 30 mm, with molds made to your drawing. Recent deliveries include a 12 mm sectional machine built for Malaysia’s 415 V supply ve single-piece line running at Equipos Industriales in Chile.
Tell us your plate thickness, outer diameter, and pitch range, and we will match the model and voltage to your grid.