Industry-Verified Manufacturing Data (2026)

Screw Conveyor

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Screw Conveyor used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Screw Conveyor is characterized by the integration of Helical Screw (Auger) and Trough/Tube Housing. In industrial production environments, manufacturers listed on CNFX commonly emphasize Carbon Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A mechanical conveying device that uses a rotating helical screw blade to move bulk materials horizontally or at an incline.

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Product Specifications

Technical details and manufacturing context for Screw Conveyor

Definition
Within a Powder Recovery System, the screw conveyor is a critical component responsible for transporting collected powder materials from collection points (such as filters or cyclones) to storage containers or subsequent processing stages. It ensures continuous, controlled material flow while maintaining system efficiency and preventing material loss.
Working Principle
A rotating helical screw (auger) housed within a trough or tube moves material along its length. As the screw rotates, material is pushed forward between the screw blades and the housing. The pitch, diameter, and rotational speed determine the conveying capacity and rate.
Common Materials
Carbon Steel, Stainless Steel
Technical Parameters
  • Screw diameter, which determines the conveying capacity and housing dimensions (mm) Per Request
Components / BOM
  • Helical Screw (Auger)
    Rotates to push material forward through the housing
    Material: Carbon Steel or Stainless Steel
  • Trough/Tube Housing
    Encloses the screw and contains the material during transport
    Material: Carbon Steel or Stainless Steel
  • Drive Unit
    Provides rotational power to the screw via motor and gearbox
    Material: Various metals and alloys
  • Inlet Hopper
    Receives material from the powder recovery system
    Material: Carbon Steel or Stainless Steel
  • Outlet
    Discharges material to the next stage
    Material: Carbon Steel or Stainless Steel
Engineering Reasoning
0.5-2.5 m/s screw rotational speed, 15-45° inclination angle, 0.3-0.7 material fill factor
Torsional shear stress exceeding 150 MPa at screw shaft, material bridging at 60° repose angle, screw deflection exceeding L/500 where L is span length
Design Rationale: Torsional fatigue failure from cyclic loading exceeding yield strength, material arching due to cohesive forces exceeding gravitational component, elastic buckling from Euler critical load
Risk Mitigation (FMEA)
Trigger Abrasive particle size >5mm at 2.5 m/s conveying velocity
Mode: Helical flight wear rate exceeding 0.5 mm/1000 operating hours
Strategy: Hardened steel flights with 55 HRC minimum hardness, tungsten carbide coating on leading edges
Trigger Material moisture content >12% by weight at 25°C
Mode: Material adhesion forming 50mm thick buildup on screw surface
Strategy: PTFE-coated screw surfaces with 0.04 friction coefficient, internal scrapers at 1m intervals

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Screw Conveyor.

industrial screw conveyor for bulk materials stainless steel screw conveyor equipment carbon steel helical screw conveyor inclined screw conveyor for manufacturing custom screw conveyor drive unit

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Powder Recovery System
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Tunnel Boring Machine
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Shield Tunneling Machine
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Mineral Filler System
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Spoil Removal System
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Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 0.5 bar (typically not for pressurized systems)
flow rate: Up to 300 m³/h (varies with diameter and speed)
temperature: -20°C to 200°C (depending on material and seal type)
slurry concentration: Up to 70% solids by weight (depending on material properties)
Media Compatibility
✓ Dry bulk powders (e.g., cement, flour) ✓ Granular materials (e.g., grains, plastic pellets) ✓ Non-abrasive slurries (e.g., wastewater sludge)
Unsuitable: Highly abrasive materials (e.g., sand with sharp edges) or sticky substances that cause buildup
Sizing Data Required
  • Material bulk density (kg/m³)
  • Required throughput capacity (tons/hour)
  • Conveyor length and inclination angle (degrees)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Screw flight wear/breakage
Cause: Abrasive material handling causing progressive erosion of flight edges, especially at discharge points or when handling materials with high silica content
Bearing failure
Cause: Contamination from conveyed material ingress into bearing housings due to inadequate sealing, combined with misalignment from improper installation or foundation settling
Maintenance Indicators
  • Unusual grinding or scraping noises from the conveyor casing indicating metal-on-metal contact
  • Visible material leakage from casing joints or seals suggesting excessive internal pressure or component wear
Engineering Tips
  • Implement regular screw alignment checks and adjust using laser alignment tools to prevent premature bearing and coupling failures
  • Install wear-resistant liners (ceramic or hardened steel) at high-wear zones and establish a predictive maintenance program using vibration analysis on drive components

Compliance & Manufacturing Standards

Reference Standards
ISO 7119: Screw conveyors - Design rules for drive power ANSI/CEMA 350: Screw Conveyors for Bulk Materials DIN 15262: Continuous mechanical handling equipment - Screw conveyors - Principles for calculation
Manufacturing Precision
  • Shaft straightness: ≤0.05mm per meter
  • Flight outer diameter: ±1.5mm tolerance
Quality Inspection
  • Dimensional verification with coordinate measuring machine (CMM)
  • Non-destructive testing (NDT) for weld integrity

Factories Producing Screw Conveyor

Verified manufacturers with capability to produce this product in China

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✓ 92% Supplier Capability Match Found

P Project Engineer from United States Jan 01, 2026
★★★★★
"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Screw Conveyor arrived with full certification."
Technical Specifications Verified
S Sourcing Manager from United Arab Emirates Dec 29, 2025
★★★★★
"Great transparency on the Screw Conveyor components. Essential for our Machinery and Equipment Manufacturing supply chain."
Technical Specifications Verified
P Procurement Specialist from Australia Dec 26, 2025
★★★★★
"The Screw Conveyor we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

7 sourcing managers are analyzing this specification now. Last inquiry for Screw Conveyor from Thailand (1h ago).

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Frequently Asked Questions

What materials can a screw conveyor handle?

Screw conveyors efficiently move bulk materials like grains, powders, pellets, and aggregates in machinery manufacturing applications.

What's the difference between carbon steel and stainless steel screw conveyors?

Carbon steel offers cost-effective durability for general materials, while stainless steel provides corrosion resistance for food-grade, chemical, or moist applications.

Can screw conveyors operate at an incline?

Yes, screw conveyors can be configured for horizontal or inclined material transport, though efficiency decreases as the incline angle increases.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Machinery and Equipment Manufacturing sector.

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