Trough / Housing: Material Thickness 3 mm to 10 mm

Component Specifications

Definition

A trough or housing in a screw feeder is a rigid, typically U-shaped or tubular enclosure that houses the rotating screw (auger). It provides structural support, contains the bulk material being conveyed, and defines the flow path. The design ensures controlled material movement from the inlet to the discharge point, preventing spillage and maintaining consistent feed rates. Key features often include a cover, inspection ports, and mounting flanges for integration with hoppers or other equipment.

Working Principle

The trough/housing operates by enclosing the screw conveyor mechanism. As the screw rotates within it, material is pushed along the trough's interior surface due to friction and the screw's geometry. The housing constrains the material, creating a controlled volume for transport, and its shape (e.g., U-trough for general use, tubular for sealed applications) influences flow characteristics and efficiency. It works in conjunction with the screw to ensure steady, directional movement of bulk solids.

Materials

Typically constructed from carbon steel (e.g., ASTM A36) for general use, stainless steel (e.g., 304 or 316) for food, chemical, or corrosive environments, or aluminum for lightweight applications. Surfaces may be polished, coated (e.g., epoxy, Teflon), or lined (e.g., urethane, ceramic) to reduce wear, prevent contamination, or enhance flow. Thickness ranges from 3 mm to 10 mm depending on load and abrasion resistance requirements.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	Customizable, typically 1m to 10m
Load Capacity	Up to 500 kg/m depending on design
Surface Finish	Ra ≤ 0.8 μm for food grade
Width/Diameter	100 mm to 500 mm (U-trough) or 100 mm to 300 mm (tubular)
Inlet/Outlet Size	Matches connected equipment (e.g., 150 mm flange)
Material Thickness	3 mm to 10 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 7119, DIN 15262

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.

View Product Details

Feeding Screw/Conveyor

A mechanical component that transports bulk materials from a hopper or storage area into a processing system using a rotating helical screw or conveyor mechanism.

View Product Details

Engineering Analysis

Risks & Mitigation

Material buildup causing blockages
Wear from abrasive materials leading to leaks
Corrosion in humid or chemical environments
Improper alignment causing excessive vibration or screw contact

FMEA Triads

Trigger: Abrasive material flow
Failure: Thinning or perforation of trough walls
Mitigation: Use wear-resistant liners (e.g., ceramic, urethane) and schedule regular thickness inspections.

Trigger: Moisture or chemical exposure
Failure: Corrosion compromising structural integrity
Mitigation: Select corrosion-resistant materials (e.g., stainless steel) and apply protective coatings.

Trigger: Inadequate cleaning or material buildup
Failure: Blockages reducing throughput or causing motor overload
Mitigation: Implement routine cleaning protocols and design with smooth interiors or clean-out access points.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Dimensional tolerance per ISO 2768-m, flatness within 2 mm/m, surface roughness as specified for hygiene (e.g., ≤ 0.8 μm Ra for food contact)

Test Method

Visual inspection, dimensional checks with calipers/gauges, material certification (e.g., mill test reports), and pressure testing for sealed units if applicable.

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

Check the legal entity, factory address, ownership, certifications, and direct contacts.

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

Manufacturers of Trough / Housing

Manufacturer profiles associated with Trough / Housing.

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Frequently Asked Questions

What is the difference between a U-trough and tubular housing in screw feeders?

A U-trough is open-top, cost-effective, and allows easy access for maintenance, suitable for non-hazardous materials. Tubular housing is fully enclosed, ideal for dusty, toxic, or volatile materials, offering better containment and environmental protection.

How do I select the right material for a screw feeder trough?

Choose based on application: carbon steel for general industry, stainless steel for hygiene or corrosion resistance (e.g., food, chemicals), and coated/lined versions for abrasive or sticky materials to reduce wear and improve flow.

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.

Trough / Housing