What Is Continuous Screw Conveyor Flight

Continuous screw conveyor flight is a key component of screw conveyors, used to move materials along the shaft through rotational motion.

It is widely applied in industries such as agriculture, cement, mining and bulk material handling.

heavy duty screw flight for cement and grain conveying

Features of Continuous Screw Flighting

  • Manufactured by cold rolling process for improved strength and rigidity
  • Quick production time with stable quality
  • Easy to weld and assemble with screw shafts
  • Outer edge thickness is about half of the inner edge, but with higher hardness after rolling
  • The outer edge has significantly better wear resistance, extending service life
  • Smooth and continuous structure ensures efficient material conveying

Advantages of Cold Rolled Screw Flight

Cold rolling process improves the mechanical properties of the flight:

  • Increased hardness at the outer edge
  • Better wear resistance compared to traditional methods
  • Improved structural integrity
  • Longer service life under abrasive conditions

large diameter screw conveyor flight in steel cage packing

Custom Screw Flight Specifications

We provide customized screw flights based on your project requirements.

Please provide the following information for quotation:

  • Outer Diameter (OD)
  • Inner Diameter (ID)
  • Pitch
  • Thickness
  • Material
  • Rotation direction (left or right)
  • Quantity

👉 The size can be fully customized according to your application.

Standard Size Range and Dimensional Reference

The following table and drawing show the standard size range for reference. Custom sizes are available upon request.

screw flight production showing cold rolling forming process continuous screw conveyor flight

 

Model LY125 LY160 LY200 LY250 LY320 LY400 LY500
OD D（mm） φ125 φ160 φ200 φ250 φ320 φ400 φ500
ID D（mm） φ30 φ42 φ48 φ60 φ76 φ108 φ133
Pitch P（mm） 100-125 120-160 160-200 200-250 250-320 320-400 400
Thickness T （mm） 3.5 3.5 3.5 3.5-5 3.5-5 3.5-5 3.5-5

The above specifications are for reference. Custom sizes and thicknesses can be provided according to your requirements.

Standard Size Range

Outer Diameter (OD) Inner Diameter (ID) Pitch Range Thickness Range Material
100 – 300 mm 20 – 100 mm 80 – 300 mm 3 – 8 mm Carbon Steel / Stainless Steel
300 – 800 mm 50 – 200 mm 150 – 600 mm 4 – 12 mm Carbon Steel / Stainless Steel
800 – 1500 mm 100 – 400 mm 300 – 1200 mm 6 – 16 mm Carbon Steel / Stainless Steel

replacement screw conveyor flight for industrial conveyor system    screw conveyor flight edge detail showing hardened outer rim

Applications of Screw Conveyor Flight

Continuous screw flights are widely used in:

  • Grain and feed industry
  • Cement and building materials
  • Mining and metallurgy
  • Chemical processing
  • Waste and recycling systems

They are suitable for powders, granules and bulk materials.

Rotation Direction of Screw Conveyor Flight

The rotation direction (left-hand or right-hand) is a critical parameter for production and must be confirmed before order.

If you are unsure, please refer to the diagram below or send us your drawing for confirmation.

continuous screw conveyor flight continuous screw flight with smooth surface for efficient conveying

Incorrect rotation direction may lead to improper material conveying.

How to Identify Screw Flight Rotation

Correct identification of screw flight rotation is essential to ensure proper material conveying direction.

There are two types of rotation:

Right-Hand Flight

  • The flight rotates clockwise when viewed from the end
  • Material is conveyed forward (away from the observer)
  • Most commonly used in standard screw conveyor systems

Left-Hand Flight

  • The flight rotates counterclockwise when viewed from the end
  • Material is conveyed in the opposite direction
  • Used for reverse conveying or special applications

Important Note

Incorrect rotation direction may lead to improper material conveying or system malfunction.

If you are unsure about the rotation direction, please refer to the diagram above or send us your drawing for confirmation.

We can help confirm the correct rotation based on your conveyor layout or drawing.

How to Select the Right Screw Conveyor Flight

Selecting the correct screw conveyor flight is essential to ensure efficient material conveying and long service life. The selection mainly depends on the following factors:

1. Material Type

Different materials require different flight designs:

  • Powder materials (flour, cement, lime) → standard continuous flight
  • Granular materials (grain, plastic pellets) → standard pitch with smooth surface
  • Abrasive materials (sand, ore) → thicker flight with wear-resistant material
  • Sticky materials → larger pitch or special design to prevent build-up

2. Outer Diameter (OD) and Inner Diameter (ID)

  • OD (Outer Diameter) determines the conveying capacity
  • ID (Inner Diameter) must match the shaft size

👉 Larger diameter → higher conveying capacity

3. Pitch Selection

  • Standard pitch (≈ OD) → general conveying applications
  • Short pitch (< OD) → slow conveying, higher filling rate
  • Long pitch (> OD) → faster conveying, lower filling rate

4. Thickness Selection

  • Thin thickness → light-duty and cost-effective applications
  • Thicker flight → heavy-duty and abrasive materials

👉 For harsh conditions, thicker flights are recommended for longer service life

5. Material Selection

  • Carbon steel → general industrial applications
  • Stainless steel → corrosive or food-grade environments
  • Wear-resistant materials → abrasive materials

6. Rotation Direction

  • Right-hand flight → standard conveying direction
  • Left-hand flight → reverse conveying direction

👉 Must be confirmed before production

Final Recommendation

If you are not sure about the correct specifications, please send us your material type, required capacity and working conditions.

We can recommend the most suitable screw conveyor flight solution for your application.

Packaging of Screw Conveyor Flight

The screw conveyor flights are securely packed in steel cages to ensure safe handling, transportation and protection during shipment.

Robust packaging ensures safe delivery without deformation or damage.

Other packaging methods are also available based on customer requirements.

screw conveyor flight mounted on shaft for assembly

More Images of Screw Conveyor Flight

custom screw flight fabrication for industrial conveyor systems stainless steel screw conveyor flight for food processing

Images showing actual production, finished products and application of screw conveyor flights.

Why Choose Our Screw Flights

  • Stable quality with controlled manufacturing process
  • Strong wear resistance for long-term operation
  • Flexible customization for different applications
  • Competitive pricing with reliable performance

Get Custom Screw Conveyor Flight for Your Project

Looking for high-quality screw conveyor flighting for your system?

Send us your drawing or specifications. We will provide a fast quotation and suitable solution.

We can also produce tapered screw flights with variable diameters for special applications.

Types of Screw Conveyor Flight

We provide different types of screw conveyor flights to meet various conveying and processing requirements:

Continuous Screw Flight

Continuous screw flights are manufactured by cold rolling process, offering high strength, smooth surface and excellent wear resistance.

👉 Suitable for:

  • General conveying
  • Bulk materials such as powder, grain and cement

Sectional Screw Flight

Sectional screw flights are formed by pressing individual segments and then welded together to form a complete screw.

👉 Suitable for:

  • Large diameter applications
  • Heavy-duty conveying systems

👉 Learn more about our sectional screw flight here.

Tapered Screw Flight (Variable Diameter)

Tapered screw flights feature a gradually changing diameter along the shaft, allowing better control of material flow.

👉 Suitable for:

  • Screw feeders
  • Mixing and blending systems
  • Applications requiring controlled or variable flow

If you are not sure which type is suitable, feel free to send us your application details or drawings.

Related Screw Flight Types

We also provide other types of screw conveyor flights:

👉 Learn more about different screw flight types for your application.

Custom Screw Flight Solutions

Different applications may require different flight types, materials and dimensions.

We can provide customized solutions based on your drawings and working conditions.

Contact us today for a quick response.

We also offer sectional screw conveyor flights for different applications. Learn more about our sectional screw flight here.