---
title: "Hub"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:HUB"
  data_integrity_hash: "20c06478342f5d7768f18b1a57c2b436"
  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:HUB"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/hub.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/hub"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-3000 RPM at 20-150 N·m torque"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 180
    unit: "MPa"
    consequence: "High-cycle fatigue from cyclic bending stresses exceeding S-N curve endurance limit of 110 MPa for AISI 4140 steel"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Shaft misalignment exceeding 0.05 mm/m angular deviation"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Laser alignment during installation with 0.02 mm/m tolerance and flexible coupling with 3° angular misalignment capacity"
  - node_2:
      trigger: "Corrosive fluid pH below 4.0 or above 10.5"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Electroless nickel plating with 25-50 μm thickness or duplex stainless steel (UNS S31803) construction"
bom_nodes:
  keyway:
    type: "component"
    urn: "URN:CNFX:ME:KEYWAY"
    interface_type: "physical-logic-coupled"
  blade-mounting-flanges:
    type: "component"
    urn: "URN:CNFX:ME:BLADE_MOUNTING_FLANGES"
    interface_type: "physical-logic-coupled"
  set-screw-holes:
    type: "component"
    urn: "URN:CNFX:ME:SET_SCREW_HOLES"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 (QUALITY MANAGEMENT SYSTEMS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/hub.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "0e7552190292a7e52076f5d6f7095726dc735ad4955a8b085c078e938d4608e0"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Hub

## 1. Technical Definition
The central mounting component of a mixing impeller that connects the blades to the drive shaft.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-3000 RPM at 20-150 N·m torque**. Failure boundary: **Yield strength exceeded at 180 MPa stress or 0.15 mm radial runout tolerance violation**, Mechanism: **High-cycle fatigue from cyclic bending stresses exceeding S-N curve endurance limit of 110 MPa for AISI 4140 steel**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Shaft misalignment exceeding 0.05 mm/m angular deviation | 8 | Premature bearing wear leading to hub wobble exceeding 0.1 mm TIR | Laser alignment during installation with 0.02 mm/m tolerance and flexible coupling with 3° angular misalignment capacity |
| Corrosive fluid pH below 4.0 or above 10.5 | 8 | Stress corrosion cracking initiating at keyway corners | Electroless nickel plating with 25-50 μm thickness or duplex stainless steel (UNS S31803) construction |

## 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**: **CNC Machining Center**, **Coordinate Measuring Machine**, **Industrial Balancing Machine**  
**Downstream Applications**: Industrial Mixers, Chemical Reactors, Pharmaceutical Blending Equipment  

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

### Q: What materials are available for the mixing impeller hub?
**A**: Our hubs are manufactured in Stainless Steel (304, 316 grades), Carbon Steel, Cast Iron, and Aluminum Alloy to suit various industrial applications and corrosion resistance needs.

### Q: How does the hub connect to the drive shaft?
**A**: The hub features a keyway for secure shaft connection, blade mounting flanges for attaching impeller blades, and set screw holes for additional fastening stability in mixing equipment.

### Q: What industries use this type of impeller hub?
**A**: This central mounting component is essential for machinery and equipment manufacturing, particularly in mixing, blending, and agitation systems across chemical, pharmaceutical, food processing, and wastewater treatment industries.

## 6. Manufacturing Compliance
- ISO 9001:2015 (QUALITY MANAGEMENT SYSTEMS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Hub](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/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**: HUB | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 5261539c
