---
title: "Wheel Assembly"
industry: "Other Transport Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:WHEEL_ASSEMBLY"
  data_integrity_hash: "aae81f7f7d1b9124e0e37539ea430084"
  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:WHEEL_ASSEMBLY"
  data_source_uri: "https://cnfx.com/llms/industry/other-transport-equipment-manufacturing/product/wheel-assembly.md"
  official_resource_url: "https://cnfx.com/industry/other-transport-equipment-manufacturing/product/wheel-assembly"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-150 kN radial load, -40°C to 120°C ambient temperature, 0-100 km/h linear velocity"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 200
    unit: "HB"
    consequence: "Hertzian contact stress exceeding 1.5 GPa causing subsurface fatigue cracks, thermal expansion coefficient mismatch (α_steel=11×10⁻⁶/°C vs α_rail=12×10⁻⁶/°C) inducing residual stresses"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Lubricant viscosity breakdown at 150°C"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Ceramic hybrid bearings with silicon nitride balls (α=3.2×10⁻⁶/°C)"
  - node_2:
      trigger: "Impact loading exceeding 250 kN from rail joint discontinuity"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Forged AISI 4140 steel wheels with 850 MPa yield strength and Charpy V-notch 40 J at -20°C"
bom_nodes:
  wheel:
    type: "component"
    urn: "URN:CNFX:ME:WHEEL"
    interface_type: "physical-logic-coupled"
  axle:
    type: "component"
    urn: "URN:CNFX:ME:AXLE"
    interface_type: "physical-logic-coupled"
  bearing:
    type: "part"
    urn: "URN:CNFX:ME:BEARING"
    interface_type: "physical-logic-coupled"
  wheel-flange:
    type: "component"
    urn: "URN:CNFX:ME:WHEEL_FLANGE"
    interface_type: "physical-logic-coupled"
  mounting-bracket:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_BRACKET"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/other-transport-equipment-manufacturing/product/wheel-assembly.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "c068ccc8896407f248f06b0306a4e382701e0e2ba136fce7768f642bffb9a022"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Wheel Assembly

## 1. Technical Definition
A complete set of components that form the rolling mechanism of an end truck, enabling movement along rails or tracks.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-150 kN radial load, -40°C to 120°C ambient temperature, 0-100 km/h linear velocity**. Failure boundary: **Brinell hardness drop below 200 HB at bearing raceway, radial play exceeding 0.15 mm, surface temperature exceeding 180°C at wheel-rail interface**, Mechanism: **Hertzian contact stress exceeding 1.5 GPa causing subsurface fatigue cracks, thermal expansion coefficient mismatch (α_steel=11×10⁻⁶/°C vs α_rail=12×10⁻⁶/°C) inducing residual stresses**.

### 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 |
| :--- | :--- | :--- | :--- |
| Lubricant viscosity breakdown at 150°C | 8 | Adhesive wear at wheel bearing contact surfaces | Ceramic hybrid bearings with silicon nitride balls (α=3.2×10⁻⁶/°C) |
| Impact loading exceeding 250 kN from rail joint discontinuity | 8 | Plastic deformation at wheel tread exceeding 2% strain | Forged AISI 4140 steel wheels with 850 MPa yield strength and Charpy V-notch 40 J at -20°C |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **CNC Machining Center**, **Industrial Welding Robot**, **Coordinate Measuring Machine**  
**Downstream Applications**: Overhead Cranes, Gantry Cranes, Monorail Systems  

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

### Q: What materials are available for the wheel assembly components?
**A**: Our wheel assemblies are manufactured using forged steel, alloy steel, or cast iron materials, selected for durability and performance in transport equipment applications.

### Q: What components are included in the complete wheel assembly?
**A**: Each assembly includes wheel, axle, bearing, wheel flange, and mounting bracket components that form a complete rolling mechanism for end trucks moving along rails or tracks.

### Q: How does the wheel assembly improve transport equipment operation?
**A**: The precision-engineered assembly ensures smooth movement, reduces friction, and provides reliable tracking along rails, enhancing overall equipment efficiency and longevity.

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

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Wheel Assembly](https://cnfx.com/industry/other-transport-equipment-manufacturing/product/wheel-assembly)**

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

> **Reference ID**: WHEEL_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 04390cf0
