Screw (Auger): Diameter 25-300 mm, Length 500-5000 mm

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

Parameter	Typical range	Notes & selection driver
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

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 3408, DIN 103

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

Typical Suppliers & Equivalents

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

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Screw (Auger)

Manufacturer profiles associated with Screw (Auger).

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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.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Screw (Auger)