|
Still deciding? Get samples of $ !
Order Sample
|
| Customization: | Available |
|---|---|
| After-sales Service: | as Per Specification |
| Warranty: | 6 Months |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
|---|
| Payment Methods: |
|
|---|---|
| Support payments in USD |
| Secure payments: | Every payment you make on Made-in-China.com is protected by the platform. |
|---|
| Refund policy: | Claim a refund if your order doesn't ship, is missing, or arrives with product issues. |
|---|
Suppliers with verified business licenses
Audited by an independent third-party inspection agency
Screw conveyor series screw conveyor is divided into horizontal screw conveyor and vertical screw
Other name: Screw blade, auger flight, auger blade, screw
Material: Carbon Steel, Stainless steel, and other material
Thickness: 2.5mm-6mm, 15mm-30mm
Main Use: Usually, it is used on the screw conveyor and drill equipment.
Main parameters as below: (we also can design as per customer's request)

Mining: Ore, coal, aggregates conveying systems
Agriculture: Grain augers, feed handling, fertilizer conveyors
Construction: Cement, sand, gravel handling equipment
Food Processing: Grain, flour, sugar, powdered materials
Chemical: Powder and granule conveying in processing plants
Pharmaceutical: Material handling in controlled environments
Waste Management: Municipal solid waste, recycling facilities
Plastics: Pellet conveying in manufacturing plants
Drilling: Earth augers for construction and geothermal
Mixing: Ribbon blenders, paddle mixers, continuous mixers
Extrusion: Feed screws for plastic and food extrusion
Marine: Cargo handling systems on ships and docks

|
Technical data |
Helical Diameter mm |
Pitch |
Speed r/min |
Standard Volume Conveyance |
Speed r/min |
Standard Volume Conveyance |
Speed r/min |
Standard Volume Conveyance |
Speed r/min |
|||||||
|
lv(m³/h) |
lv(m³/h) |
lv(m³/h) |
||||||||||||||
|
n |
Diameter |
n |
Diameter |
n |
Diameter |
n |
||||||||||
|
0.45 |
0.33 |
0.15 |
0.45 |
0.33 |
0.15 |
0.45 |
0.33 |
0.15 |
||||||||
|
Medium-sized |
LS200 |
200 |
200 |
100 |
16.9 |
12.4 |
5.6 |
80 |
13.5 |
9.9 |
4.5 |
63 |
10.7 |
7.8 |
3.6 |
50 |
|
LS250 |
250 |
250 |
90 |
29.7 |
21.8 |
9.9 |
71 |
23.5 |
17.2 |
7.8 |
56 |
18.5 |
13.6 |
6.2 |
45 |
|
|
LS315 |
315 |
315 |
80 |
52.9 |
38.8 |
17.6 |
63 |
41.6 |
30.5 |
13.9 |
50 |
33.1 |
24.2 |
11 |
40 |
|
|
LS400 |
400 |
355 |
71 |
85.3 |
62.5 |
28.4 |
56 |
67.3 |
49.3 |
22.4 |
45 |
54.1 |
39.6 |
18 |
36 |
|
|
Large |
LS500 |
500 |
400 |
63 |
133.2 |
97.7 |
44.4 |
50 |
105.8 |
77.6 |
35.3 |
40 |
84.6 |
62 |
28.2 |
32 |
|
LS630 |
630 |
450 |
50 |
188.9 |
138.5 |
63 |
40 |
151.1 |
111 |
50.4 |
32 |
120.9 |
88.6 |
40.3 |
25 |
|
|
Oversize |
LS800 |
800 |
500 |
40 |
270.7 |
198.5 |
90.2 |
32 |
216.6 |
159 |
72.2 |
25 |
169.2 |
124.1 |
54.4 |
20 |
|
LS1000 |
1000 |
560 |
32 |
379 |
277.9 |
126 |
25 |
296.1 |
217 |
98.7 |
20 |
236.9 |
173.7 |
79 |
16 |
|
|
LS1250 |
1250 |
630 |
25 |
520.5 |
381.5 |
174 |
20 |
416.4 |
305 |
139 |
16 |
333.1 |
244.3 |
111 |
13 |
|


Q1: What is the difference between sectional flight and continuous helix?
A: These refer to how the blade is manufactured and attached:
Sectional Flight: Individual "rings" or short sections are produced and then welded together end-to-end on the shaft. This method is more economical, easier to transport, and allows for different pitches in different sections. It's common for large diameters and custom lengths.
Continuous Helix: The entire blade is formed from a single strip of steel in one continuous spiral. This creates a smoother, stronger joint-free surface, which is better for handling sticky or cohesive materials that might catch on weld seams. It's typically used for smaller diameters and high-volume production.
Q2: How do I determine the correct pitch for my application?
A: The pitch (the distance between consecutive turns of the blade) is critical for material flow rate and conveying efficiency.
Standard Pitch: Usually equal to the blade diameter (1:1 ratio). Good for most general conveying.
Half Pitch (1/2 x Diameter): Used for inclined conveyors, sticky materials, or when precise metering is needed.
Long Pitch (>1 x Diameter): Used for free-flowing, non-abrasive materials to maximize capacity.
Our engineers can recommend the optimal pitch based on your material characteristics, conveyor angle, and desired capacity.
Q3: What thickness of spiral blade should I choose?
A: Thickness depends on material abrasiveness, screw diameter, and rotational speed.
Light Duty (3-6mm): For non-abrasive materials (grain, flour, plastic pellets) and smaller diameters (<250mm).
Medium Duty (6-10mm): For moderately abrasive materials (sand, coal, fertilizers) and medium diameters.
Heavy Duty (10-20mm+): For highly abrasive materials (crushed ore, slag) or large diameters (>600mm). May require wear-resistant steel or hard-faced edges.
Q4: Can you provide blades with wear protection?
A: Yes, we offer several wear-protection solutions:
Material Upgrade: Using abrasion-resistant (AR) steel plate (like Hardox, NM series) for the entire blade.
Hard-Facing: Applying a welded layer of extremely hard alloy (like chromium carbide) to the leading edge or outer periphery of the blade.
Replaceable Tips: Bolting on tungsten carbide or AR steel wear plates to the blade edge.
Special Coatings: Industrial coatings to reduce friction and adhesion.
Q5: What information do you need to provide a quotation or design?
A: Please provide as many details as possible:
Blade Dimensions: Outside Diameter (OD), Inside Diameter (ID or shaft size), Pitch, and Length.
Material Specification: Type of steel (e.g., Q235, 304SS, Hardox 400).
Application Details: What material is being conveyed? What is its density, abrasiveness, moisture content?
Operating Conditions: Conveyor angle, rotational speed (RPM), environment (dry, wet, corrosive).
Quantity Required.
Mounting Method: Welded, bolted, or other.
Q6: What manufacturing methods do you use?
A: We primarily use two methods, chosen based on your specs:
Cold Rolling (Most Common): A strip of steel is passed through a series of rollers to form the spiral shape. It's efficient, precise, and cost-effective for medium to high volumes.
Press Forming / Cutting: For very thick plate, special profiles, or low-volume custom shapes, we use plasma/laser cutting followed by press bending.
We will select the optimal method for your requirements.
Q7: Can you make custom or non-standard spiral blades?
A: Yes, customization is our specialty. We can produce:
Variable Pitch Screws: Where the pitch changes along the length (e.g., for compacting or mixing).
Tapered Screws: Where the diameter increases or decreases.
Ribbon Blades & Paddle Flights: For mixing applications.
Special Edge Profiles: Beveled, notched, or flighting with cutouts.
Unique Dimensions: Any diameter, pitch, and thickness combination.
Q8: What is your Minimum Order Quantity (MOQ)?
A: For standard sizes and materials, our MOQ can be as low as 100 meters of total blade length (can be multiple pieces).
For custom-designed blades requiring new tooling (rolls or dies), the MOQ is higher, typically 500-1000 meters depending on complexity.
We are flexible for new customer trial orders.
