---
title: "Hub Assembly"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:HUB_ASSEMBLY"
  data_integrity_hash: "1be82c389394440f493ec4b92298ce7e"
  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_ASSEMBLY"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/hub-assembly.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/hub-assembly"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-1200 rpm at 20-80°C ambient temperature"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 1500
    unit: "rpm"
    consequence: "Brinelling fatigue from Hertzian contact stress exceeding 2.1 GPa at ball-raceway interfaces during over-speed conditions"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Radial misalignment exceeding 0.05 mm between hub bore and drive shaft"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Interference fit with H7/p6 tolerance pairing and dual-keyway positive drive coupling"
  - node_2:
      trigger: "Insufficient NLGI Grade 2 lithium-complex grease replenishment beyond 2000 operating hours"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Automatic lubrication system with 0.5 cc/hour metered injection and thermal sensors at 70°C cutoff"
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"
  bearing-surface:
    type: "component"
    urn: "URN:CNFX:ME:BEARING_SURFACE"
    interface_type: "physical-logic-coupled"
  keywayspline:
    type: "component"
    urn: "URN:CNFX:ME:KEYWAYSPLINE"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/AGMA 2000-A88 - GEAR CLASSIFICATION AND INSPECTION HANDBOOK"
    scope: "Verified Engineering Specification"
  - standard: "DIN 743-2:2012 - CALCULATION OF LOAD CAPACITY OF SHAFTS AND AXLES"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/hub-assembly.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "c1f87e37231e645d32ef7bdfb4c48f40a3d3d6e26f1d1f3934033a09941f01d1"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Hub Assembly

## 1. Technical Definition
The central rotating component of an infeed starwheel that provides mounting points for starwheel arms and facilitates smooth rotation.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-1200 rpm at 20-80°C ambient temperature**. Failure boundary: **Exceeds 1500 rpm rotational speed or operates below -10°C causing lubricant solidification**, Mechanism: **Brinelling fatigue from Hertzian contact stress exceeding 2.1 GPa at ball-raceway interfaces during over-speed conditions**.

### 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 |
| :--- | :--- | :--- | :--- |
| Radial misalignment exceeding 0.05 mm between hub bore and drive shaft | 8 | Eccentric wobble inducing 15-25 Hz vibration harmonics | Interference fit with H7/p6 tolerance pairing and dual-keyway positive drive coupling |
| Insufficient NLGI Grade 2 lithium-complex grease replenishment beyond 2000 operating hours | 8 | Dry-running bearing seizure at 80-100°C operating temperature | Automatic lubrication system with 0.5 cc/hour metered injection and thermal sensors at 70°C cutoff |

## 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**: **Infeed Conveyor System**, **Variable Frequency Drive**, **Lubrication System**  
**Downstream Applications**: Bottle Filling Lines, Pharmaceutical Packaging Systems, Food Processing Equipment  

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

### Q: What materials are available for the hub assembly?
**A**: Our hub assemblies are manufactured in carbon steel, stainless steel, and alloy steel to meet various industrial requirements for strength, corrosion resistance, and durability.

### Q: What are the key components of the hub assembly?
**A**: The hub assembly consists of four main components: the hub body, mounting flange, bearing surface, and keyway/spline interface, ensuring precise mounting and smooth rotation for starwheel arms.

### Q: How does the hub assembly improve starwheel performance?
**A**: The hub assembly serves as the central rotating component, providing stable mounting points for starwheel arms and facilitating smooth, consistent rotation to enhance material handling efficiency in machinery applications.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- ANSI/AGMA 2000-A88 - GEAR CLASSIFICATION AND INSPECTION HANDBOOK
- DIN 743-2:2012 - CALCULATION OF LOAD CAPACITY OF SHAFTS AND AXLES

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Hub Assembly](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/hub-assembly)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: HUB_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 12563f60
