Trough/Tube Housing: Component Specs, Materials & Applications

Component Specifications

Definition

The Trough/Tube Housing is a critical structural component in screw conveyor systems, consisting of a U-shaped or tubular enclosure that houses the rotating screw flight. It provides containment for bulk materials being conveyed, prevents spillage, and maintains material flow direction. Available in various cross-sectional designs (U-trough, tubular, flanged) and lengths, it interfaces with end plates, covers, and discharge points to create a sealed conveying path. The housing's geometry directly influences material flow characteristics, capacity, and efficiency.

Working Principle

The housing creates a confined channel where bulk materials are pushed forward by the rotating screw flight. Its smooth interior surface minimizes friction and material buildup, while its structural rigidity supports mechanical loads and maintains alignment. In U-trough designs, the open top allows for inspection and easy cleaning, while tubular housings provide complete enclosure for dusty or hazardous materials. The housing's cross-sectional area determines the conveyor's volumetric capacity, and its length defines the conveying distance.

Materials

Carbon steel (ASTM A36/A572), stainless steel (304/316), abrasion-resistant steel (AR400/500), aluminum alloys, food-grade polymers (UHMW-PE, FDA-approved plastics). Material selection depends on application requirements: corrosion resistance, food safety, abrasion resistance, or chemical compatibility.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Cover Type	Gasketed, hinged, solid, screened
Surface Finish	Ra ≤ 3.2μm (food grade), mill finish (industrial)
Wall Thickness	3-10mm (steel), 6-20mm (polymeric)
Connection Type	Bolted flanges, welded joints, quick-connect couplings
Standard Lengths	3m, 6m, 12m (modular)
Cross Section Type	U-trough, Tubular, Flanged

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, ISO 1050, DIN 15262, DIN 15263

Parent Products

This component is used in the following industrial products

Screw Conveyor

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

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Engineering Analysis

Risks & Mitigation

Material buildup causing blockages
Corrosion in aggressive environments
Wear from abrasive materials
Structural deformation from overload
Improper sealing causing contamination

FMEA Triads

Trigger: Abrasive material flow
Failure: Excessive wall wear leading to leaks or structural failure
Mitigation: Use abrasion-resistant liners or thicker wall sections; implement regular thickness monitoring

Trigger: Corrosive environment
Failure: Corrosion penetration compromising structural integrity
Mitigation: Select corrosion-resistant materials (stainless steel, coated steel); apply protective coatings; implement corrosion monitoring

Trigger: Improper installation alignment
Failure: Misalignment causing excessive vibration and premature wear
Mitigation: Follow precise alignment procedures during installation; use laser alignment tools; implement regular alignment checks

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±1.5mm on length, ±0.5mm on straightness per meter, ±1.0mm on flange flatness

Test Method

Dimensional verification with laser measurement, pressure testing for sealed units, material certification per ASTM/ISO standards

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/Tube Housing

Manufacturer profiles associated with Trough/Tube Housing.

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Frequently Asked Questions

What is the difference between U-trough and tubular housing?

U-trough housing has an open top for easy access and cleaning, suitable for non-hazardous materials. Tubular housing is fully enclosed, preventing dust emission and contamination, ideal for hazardous or dusty materials.

How do I select housing material for my application?

Consider material properties: use stainless steel for corrosive environments, abrasion-resistant steel for abrasive materials, food-grade polymers for food processing, and aluminum for lightweight applications.

What maintenance does the housing require?

Regular inspection for wear, corrosion, or deformation; cleaning to prevent material buildup; and checking gaskets/seals for leaks in enclosed designs.

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/Tube Housing