INDUSTRY COMPONENT

Casing / Housing

Protective enclosure for ID fan components ensuring structural integrity and operational safety.

Component Specifications

Definition
The casing/housing is a structural component of an Induced Draft (ID) fan that encloses and protects internal elements such as the impeller, shaft, and bearings. It provides aerodynamic guidance for airflow, contains pressure differentials, prevents external contamination, and serves as a mounting framework for the entire fan assembly. Typically designed with inlet and outlet sections, access panels, and mounting flanges to integrate with ductwork systems.
Working Principle
Acts as a pressure vessel and airflow conduit by containing and directing the air moved by the rotating impeller. It maintains negative pressure conditions (for ID fans) to draw gases through industrial processes, while providing structural support and vibration dampening through rigid construction and proper sealing.
Materials
Carbon steel (ASTM A36/A572), stainless steel (304/316 for corrosive environments), aluminum alloys (for lightweight applications), or fiber-reinforced composites. Thickness ranges from 3-12mm depending on pressure requirements. Internal surfaces may have abrasion-resistant linings or coatings.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Noise Level<85 dB(A) with acoustic insulation
Leakage Rate<1% of flow capacity
Mounting TypeFlanged or foot-mounted
Access OpeningsMinimum 500x500mm for maintenance
Pressure RatingUp to 15 kPa negative pressure
Temperature Range-20°C to 400°C

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 5801, ISO 13349, DIN 24163, AMCA 210

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Structural fatigue from vibration
  • Corrosion in humid environments
  • Gasket failure causing leakage
  • Thermal expansion stress
  • Foreign object damage
FMEA Triads
Trigger: Vibration-induced metal fatigue
Failure: Crack development at weld joints
Mitigation: Regular vibration analysis, proper balancing of rotating components, and reinforcement at stress points
Trigger: Corrosive gas exposure
Failure: Wall thinning and eventual breach
Mitigation: Material selection (stainless steel/composites), protective coatings, and thickness monitoring

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±2mm dimensional tolerance on mounting surfaces, ±1° angular alignment
Test Method
Pressure testing per ISO 5801, leak testing with soap solution or ultrasonic detection, dimensional verification with laser scanning

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 Casing / Housing

Manufacturer profiles associated with Casing / Housing.

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Related Components

Upper Tool (Punch)
Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.
Main Frame
The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.
Shaft Bearing
Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.
Seal Groove
Precision-machined groove in aluminum bearing housings designed to accommodate sealing elements for fluid containment and contamination prevention.

Frequently Asked Questions

What is the difference between ID fan casing and FD fan casing?

ID fan casings are designed for negative pressure (suction) applications and typically have heavier construction to prevent collapse, while FD (Forced Draft) fan casings handle positive pressure and focus on containing outward forces.

How often should fan casings be inspected?

Visual inspections quarterly, with comprehensive thickness testing and weld inspections annually, or per manufacturer's maintenance schedule based on operating hours.

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.

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