---
title: "Motor Hub"
industry: "Electrical Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:MOTOR_HUB"
  data_integrity_hash: "3aca4191ebf341d94ae307be7d2ccb9e"
  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:MOTOR_HUB"
  data_source_uri: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/motor-hub.md"
  official_resource_url: "https://cnfx.com/industry/electrical-equipment-manufacturing/product/motor-hub"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "3000-15000 RPM at 0.5-2.5 N·m torque"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 16000
    unit: "RPM"
    consequence: "Brinelling from Hertzian contact stress exceeding 1.8 GPa at ball-race interface, initiating subsurface microcracks per Lundberg-Palmgren theory"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Shaft misalignment exceeding 0.05 mm/mm per ISO 21940-11"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integral flexible coupling with &lt;0.02 mm/mm misalignment tolerance"
  - node_2:
      trigger: "Lubricant thermal degradation above 120°C for &gt;1000 hours"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Forced-air cooling maintaining bearing temperature &lt;90°C via 15 CFM airflow"
bom_nodes:
  hub-body:
    type: "component"
    urn: "URN:CNFX:ME:HUB_BODY"
    interface_type: "physical-logic-coupled"
  mounting-flange:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_FLANGE"
    interface_type: "physical-logic-coupled"
  set-screw:
    type: "component"
    urn: "URN:CNFX:ME:SET_SCREW"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 1940-1:2003 (BALANCE QUALITY REQUIREMENTS FOR ROTORS)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/AGMA 2000-A88 (GEAR CLASSIFICATION AND INSPECTION HANDBOOK)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/motor-hub.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "5451312904489f4c1034a122a0f697edafc5871847dc59bd820ec750ab34dadd"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Motor Hub

## 1. Technical Definition
The central rotating component of a cooling fan that connects the motor shaft to the fan blades.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **3000-15000 RPM at 0.5-2.5 N·m torque**. Failure boundary: **Exceeds 16000 RPM or 3.0 N·m torque, causing bearing fatigue life reduction below L10=1000 hours**, Mechanism: **Brinelling from Hertzian contact stress exceeding 1.8 GPa at ball-race interface, initiating subsurface microcracks per Lundberg-Palmgren theory**.

### 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 |
| :--- | :--- | :--- | :--- |
| Shaft misalignment exceeding 0.05 mm/mm per ISO 21940-11 | 8 | Bearing premature wear with vibration amplitude &gt;4.5 mm/s RMS | Integral flexible coupling with &lt;0.02 mm/mm misalignment tolerance |
| Lubricant thermal degradation above 120°C for &gt;1000 hours | 8 | Increased friction torque &gt;3.5 N·m causing motor overload | Forced-air cooling maintaining bearing temperature &lt;90°C via 15 CFM airflow |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Balancing Machine**, **Dynamic Testing Rig**, **Automated Assembly Line**  
**Downstream Applications**: Industrial Cooling Fans, HVAC Systems, Automotive Radiator Fans  

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

### Q: What materials are available for the motor hub?
**A**: Our motor hubs are manufactured using aluminum alloy for lightweight durability, steel for maximum strength, or engineering plastic for corrosion resistance and cost-effectiveness.

### Q: How does the motor hub connect to the fan blades?
**A**: The motor hub features a mounting flange that securely attaches to fan blades, while the hub body connects directly to the motor shaft, ensuring stable rotation and efficient power transfer.

### Q: What maintenance does the motor hub require?
**A**: Motor hubs require minimal maintenance. Regular inspection for wear, proper tightening of set screws, and ensuring clean mounting surfaces will maximize lifespan and performance.

## 6. Manufacturing Compliance
- ISO 1940-1:2003 (BALANCE QUALITY REQUIREMENTS FOR ROTORS)
- ANSI/AGMA 2000-A88 (GEAR CLASSIFICATION AND INSPECTION HANDBOOK)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Motor Hub](https://cnfx.com/industry/electrical-equipment-manufacturing/product/motor-hub)**

### 🌐 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**: MOTOR_HUB | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: f0b7b79d
