Structured Manufacturing Data (2026)

Screw Conveyor

Based on aggregated insights from structured 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) Part
Rotates to push material forward through the housing

Material: Carbon Steel or Stainless Steel
Trough/Tube Housing Part
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 Part
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

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Screw Conveyor.

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 Structure

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

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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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 Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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