INDUSTRY COMPONENT

Screw (Auger)

A rotating helical screw component used in screw feeders to move bulk materials through controlled volumetric or gravimetric feeding.

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Component Specifications

Definition
The auger screw is a precision-engineered helical component that rotates within a tube or housing to transport powdered, granular, or pelletized materials from a hopper to a discharge point. It converts rotational motion into linear material movement through the geometry of its flights, providing controlled feed rates essential for process consistency in industrial applications.
Working Principle
The auger screw operates on the Archimedes' screw principle, where rotation of the helical flights creates a positive displacement action. As the screw rotates, material is trapped between consecutive flights and pushed axially along the housing. The feed rate is determined by screw diameter, pitch, rotational speed, and material characteristics, allowing precise volumetric or gravimetric control.
Materials
Typically carbon steel (AISI 1045/4140), stainless steel (304/316), or hardened tool steel; surface treatments include chrome plating, nitriding, or polymer coatings for wear/corrosion resistance.
Technical Parameters
  • Pitch 0.5-2.0 times diameter
  • Length 500-5000 mm
  • Diameter 25-300 mm
  • Tolerance ±0.1 mm on diameter
  • Surface Finish Ra 0.8-3.2 μm
  • Flight Thickness 3-20 mm
Standards
ISO 3408, DIN 103

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Screw (Auger).

auger screw screw feeder component helical conveyor bulk material handling volumetric feeder industrial screw feeding system Screw (Auger) Screw (Auger) in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Screw Feeder

A mechanical device that uses a rotating screw to transport and meter bulk materials from a storage hopper into a process or system.

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Engineering Analysis

Risks & Mitigation
  • Material bridging/rat-holing
  • Wear-induced feed rate variation
  • Corrosion in chemical environments
  • Fatigue failure at shaft connection
FMEA Triads
Trigger: Abrasive material contact
Failure: Flight wear reducing volumetric efficiency
Mitigation: Use hardened materials/coatings; implement wear monitoring
Trigger: Improper alignment during installation
Failure: Eccentric rotation causing housing contact
Mitigation: Precision alignment procedures; run-out tolerance checks

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Diameter tolerance ±0.1mm, straightness 0.5mm/m, surface hardness 45-60 HRC
Test Method
Dimensional verification per ISO 3408, material certification per ASTM A276, performance testing per CEMA Standard 350

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 factors affect auger screw feeding accuracy?

Key factors include screw pitch consistency, wear condition, material flow characteristics, rotational speed stability, and hopper level control.

How often should auger screws be inspected?

Visual inspection every 500 operating hours, dimensional checks every 2000 hours, with replacement typically needed after 10,000-15,000 hours depending on material abrasiveness.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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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