Internal Flighting: Flight Height 50-200 mm

Component Specifications

Definition

Internal flighting consists of helical blades or flights mounted on the inner surface of a rotating heating drum. These components lift, tumble, and advance materials through the drum, ensuring uniform exposure to heat sources and preventing material stagnation. They are critical for processes requiring consistent thermal treatment, drying, or mixing of bulk materials in industrial applications.

Working Principle

As the heating drum rotates, the internal flighting lifts material from the bottom and cascades it through the heated air or along the heated drum wall. This action increases surface area exposure to heat, promotes mixing, and controls residence time, optimizing thermal processing efficiency.

Materials

Typically made from carbon steel (e.g., ASTM A36), stainless steel (e.g., 304, 316 for corrosion resistance), or wear-resistant alloys. Coatings like ceramic or hard-facing may be applied for abrasive environments.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Helix Angle	15-45 degrees
Flight Pitch	150-500 mm
Flight Height	50-200 mm
Blade Thickness	3-12 mm
Mounting Method	Welded or bolted

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

Standards

DIN 28018

Parent Products

This component is used in the following industrial products

Heating Drum

A cylindrical component within the RAP Heating System that transfers thermal energy to materials through direct contact and rotation.

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Engineering Analysis

Risks & Mitigation

Material buildup leading to reduced efficiency
Wear from abrasive materials
Improper installation causing imbalance or damage
Corrosion in harsh environments

FMEA Triads

Trigger: Abrasive material wear
Failure: Reduced flight height decreases mixing efficiency
Mitigation: Use wear-resistant materials or coatings and implement regular inspection schedules.

Trigger: Corrosion from chemical exposure
Failure: Structural weakening and contamination
Mitigation: Select corrosion-resistant alloys like stainless steel and apply protective coatings.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Dimensional tolerance ±2 mm for pitch and height; alignment within 1° of specified helix angle

Test Method

Visual inspection, dimensional checks, non-destructive testing (e.g., ultrasonic for weld integrity), and operational testing under load.

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 Internal Flighting

Manufacturer profiles associated with Internal Flighting.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the purpose of internal flighting in a heating drum?

Internal flighting improves material mixing, ensures uniform heat distribution, prevents clumping, and controls material flow through the drum for efficient thermal processing.

How do you select the right flighting design?

Selection depends on material properties (e.g., density, abrasiveness), required residence time, heat transfer goals, and drum dimensions. Factors include pitch, helix angle, and blade configuration.

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.

Internal Flighting