---
title: "Impeller/Fan"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:IMPELLERFAN"
  data_integrity_hash: "c2df3f4b16db4a0fa5ff7aa9cc994ffe"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:IMPELLERFAN"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/impellerfan.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/impellerfan"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-2.5 bar differential pressure, 500-3600 RPM rotational speed, -40°C to 120°C ambient temperature"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 250
    unit: "MPa"
    consequence: "High-cycle fatigue from cyclic bending stresses exceeding 10⁷ cycles at stress amplitudes &gt;0.3× yield strength; Flow separation at incidence angles &gt;15° causing stall-induced vibrations; Centrifugal stress exceeding σ_c = ρω²r² where ρ=material density, ω=angular velocity, r=radius"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Imbalance mass &gt;0.1 g·mm at operating speed causing unbalance force F = m·e·ω²"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Dynamic balancing to ISO 1940 G2.5 grade with residual unbalance &lt;1 g·mm/kg"
  - node_2:
      trigger: "Aerodynamic excitation at blade passing frequency f_bp = N_blades × RPM/60 matching natural frequency within ±10%"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Frequency detuning via blade count selection ensuring f_bp/f_n &lt; 0.8 or &gt;1.2 where f_n is modal frequency"
bom_nodes:
  blades:
    type: "component"
    urn: "URN:CNFX:ME:BLADES"
    interface_type: "physical-logic-coupled"
  hub:
    type: "part"
    urn: "URN:CNFX:ME:HUB"
    interface_type: "physical-logic-coupled"
  balancing-weights:
    type: "component"
    urn: "URN:CNFX:ME:BALANCING_WEIGHTS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 1940-1:2003 - BALANCE QUALITY REQUIREMENTS FOR ROTORS IN A CONSTANT (RIGID) STATE"
    scope: "Verified Engineering Specification"
  - standard: "DIN 1946-1:2019-12 - VENTILATION AND AIR CONDITIONING - PART 1: HEALTH REQUIREMENTS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/impellerfan.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "dbd95d157107ec0754f0783f92e82447c28242c5a382a98383d503c7c5ba8ae7"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Impeller/Fan

## 1. Technical Definition
Rotating component that moves air or gas within an air blower/damper system.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-2.5 bar differential pressure, 500-3600 RPM rotational speed, -40°C to 120°C ambient temperature**. Failure boundary: **Material yield strength threshold: 250 MPa for aluminum alloys, 550 MPa for steel alloys; Critical speed: 1.3× operating RPM; Blade tip clearance: &lt;0.5 mm leading to contact**, Mechanism: **High-cycle fatigue from cyclic bending stresses exceeding 10⁷ cycles at stress amplitudes &gt;0.3× yield strength; Flow separation at incidence angles &gt;15° causing stall-induced vibrations; Centrifugal stress exceeding σ_c = ρω²r² where ρ=material density, ω=angular velocity, r=radius**.

### 2.1 Analytical Physics Model
Governed by the **L10 Bearing Life & Fatigue Model**:

> **Primary Equation**: $L_{10} = (\frac{C}{P})^p$  
> **Engineering Impact**: Predicts mechanical lifecycle before component fatigue.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| C | Dynamic Load Rating | Engineering Constant |
| P | Equivalent Dynamic Load | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Imbalance mass &gt;0.1 g·mm at operating speed causing unbalance force F = m·e·ω² | 8 | Excessive vibration amplitude &gt;2.5 mm/s RMS leading to bearing fatigue and shaft deflection | Dynamic balancing to ISO 1940 G2.5 grade with residual unbalance &lt;1 g·mm/kg |
| Aerodynamic excitation at blade passing frequency f_bp = N_blades × RPM/60 matching natural frequency within ±10% | 8 | Resonance amplification &gt;10× baseline vibration causing crack initiation at blade root fillet | Frequency detuning via blade count selection ensuring f_bp/f_n &lt; 0.8 or &gt;1.2 where f_n is modal frequency |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Hub](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/hub.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Electric Motor**, **Variable Frequency Drive**, **Air Filter System**  
**Downstream Applications**: HVAC Systems, Industrial Ventilation Units, Process Cooling Equipment  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are best for corrosive environments?
**A**: Stainless steel impellers offer superior corrosion resistance for harsh industrial environments, while engineering plastics provide chemical resistance at lower cost.

### Q: How important is balancing for impeller performance?
**A**: Proper balancing with balancing weights is critical to reduce vibration, minimize wear on bearings, and ensure efficient, quiet operation in air blower systems.

### Q: Can impellers be customized for specific airflow requirements?
**A**: Yes, blade design, hub configuration, and material selection can be customized to optimize airflow, pressure, and efficiency for your specific machinery application.

## 6. Manufacturing Compliance
- ISO 1940-1:2003 - BALANCE QUALITY REQUIREMENTS FOR ROTORS IN A CONSTANT (RIGID) STATE
- DIN 1946-1:2019-12 - VENTILATION AND AIR CONDITIONING - PART 1: HEALTH REQUIREMENTS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Impeller/Fan](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/impellerfan)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: IMPELLERFAN | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 2e86d83b
