Screw Conveyor Accessories

Stainless Steel Rotating Helical Blade for Screw Conveyor

Custom Manganese Steel Spiral Blade for Screw Conveyor

Screw Conveyors

A Screw Conveyor or auger conveyor is a mechanism that uses a rotating helical screw blade, called a flighting, usually within a tube, to move liquid or granular materials. They are used in many bulk handling industries. Screw conveyors in modern industry are often used horizontally or at a slight incline as an efficient way to move semi-solid materials, including food waste, wood chips, aggregates, cereal grains, animal feed, boiler ash, meat and bone meal, municipal solid waste, and many others. 

Most screw conveyors contain the following components:

•A conveyor screw, also known as a spiral blade or helicoid flighting

•A screw conveyor trough or tubular casing

•A drive unit (a shaft coupling and shaft seal or a chain drive)

•The drive mechanism

The conveyor screw (a spiral blade coiled around a shaft) is housed inside the tubular casing, where it is driven at one end and held at the other. The trough may or may not feature a trough cover. Sometimes, screw conveyors feature a spiral blade, but no shaft. In this case, they are called shaft less screw conveyors, and the blade is driven at one end and free at the other.

Ningbo Precision Machinery manufactures standard and custom rotating spiral blades for screw conveyor. Complete systems can be designed using stock components for fast delivery.

1. Model Number/Series:

We can supply most kinds of the spiral blade with a shaft or bottom fixing plate. We can manufacture them according to your drawings without tooling. We can produce the spiral blade in any length, any diameter, any pitch, any thinkness and both rotating directions.

2. Dimension/Size:

Inner diameter: ≥8mm

Outer diameter: ≤800mm  

Thickness: 3 to 20mm

3. Tolerance:
Out dameter is ±2mm
Pitch is ±3mm
Inner diameter is +1-2mm
Max gas betweent each segment is 3mm

4. Material: carbon steel, manganese steel, stainless steel, can meet the requirements of customers from different way.

5. Continued cold rolling when it has 3-5mm thickness, inner Dia. ≥20MM, outer Dia. ≤800MM

6. Continued twisting when it has 3-20 thickness, inner Dia. ≥8MM, outer Dia. ≤2MM.

7. Feature/ characteristic: Stamping and extending which adapted for any product but need making specified mold

8. Finishing: rolled cold finishing or polishing, or as your requirments.

9. Packing: Pallets for free fumigation if there is no special requirments.