---
title: "Release Bearing"
industry: "Motor Vehicle Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:RELEASE_BEARING"
  data_integrity_hash: "3fcf56722c456930d2c969e005828ae9"
  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:RELEASE_BEARING"
  data_source_uri: "https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/release-bearing.md"
  official_resource_url: "https://cnfx.com/industry/motor-vehicle-manufacturing/product/release-bearing"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.5 kN axial load, -40°C to 120°C temperature, 1000-5000 rpm rotational speed"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 3.0
    unit: "kN"
    consequence: "Hertzian contact stress exceeding 1.5 GPa causes subsurface fatigue cracks in bearing races, thermal expansion mismatch between steel (α=11×10⁻⁶/°C) and polymer cage (α=80×10⁻⁶/°C) creates interference fits &gt; 50 μm at temperature extremes"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Insufficient lubricant film thickness &lt; 0.1 μm due to high temperature operation"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement forced lubrication system with 0.2 MPa minimum pressure and temperature-controlled oil circulation"
  - node_2:
      trigger: "Misalignment &gt; 0.05° between bearing axis and clutch shaft"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate self-aligning spherical roller bearing design with ±2° angular misalignment capability"
bom_nodes:
  inner-race:
    type: "component"
    urn: "URN:CNFX:ME:INNER_RACE"
    interface_type: "physical-logic-coupled"
  outer-race:
    type: "component"
    urn: "URN:CNFX:ME:OUTER_RACE"
    interface_type: "physical-logic-coupled"
  rolling-elements-balls:
    type: "component"
    urn: "URN:CNFX:ME:ROLLING_ELEMENTS_BALLS"
    interface_type: "physical-logic-coupled"
  cageretainer:
    type: "component"
    urn: "URN:CNFX:ME:CAGERETAINER"
    interface_type: "physical-logic-coupled"
  seal:
    type: "component"
    urn: "URN:CNFX:ME:SEAL"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 (QUALITY MANAGEMENT SYSTEMS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/release-bearing.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "68b126e56daa471df692b4e9ffd8c56eae35ea71f9743a24f21e71ccfed42a12"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Release Bearing

## 1. Technical Definition
A bearing that disengages the clutch by moving the pressure plate away from the friction disc.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.5 kN axial load, -40°C to 120°C temperature, 1000-5000 rpm rotational speed**. Failure boundary: **Axial load &gt; 3.0 kN causes permanent deformation of bearing cage, temperature &gt; 150°C degrades lubricant viscosity below 10 cSt, rotational speed &gt; 6000 rpm induces centrifugal forces exceeding 50 MPa on bearing elements**, Mechanism: **Hertzian contact stress exceeding 1.5 GPa causes subsurface fatigue cracks in bearing races, thermal expansion mismatch between steel (α=11×10⁻⁶/°C) and polymer cage (α=80×10⁻⁶/°C) creates interference fits &gt; 50 μm at temperature extremes**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Insufficient lubricant film thickness &lt; 0.1 μm due to high temperature operation | 8 | Metal-to-metal contact between rolling elements and races causing adhesive wear | Implement forced lubrication system with 0.2 MPa minimum pressure and temperature-controlled oil circulation |
| Misalignment &gt; 0.05° between bearing axis and clutch shaft | 8 | Edge loading on bearing races creating localized stress concentrations &gt; 2.0 GPa | Integrate self-aligning spherical roller bearing design with ±2° angular misalignment capability |

## 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**, **Heat Treatment Furnace**, **Surface Grinding Machine**  
**Downstream Applications**: Manual Transmission Assembly, Clutch Assembly, Automotive Powertrain System  

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

### Q: What is the primary function of a release bearing in motor vehicles?
**A**: The release bearing disengages the clutch by moving the pressure plate away from the friction disc, allowing smooth gear changes and preventing transmission damage.

### Q: What materials are used in this release bearing for durability?
**A**: This bearing uses high-carbon chromium steel (GCr15) for races and balls, polyamide for the cage/retainer, and synthetic grease for lubrication, ensuring long service life.

### Q: How do I know when my vehicle's release bearing needs replacement?
**A**: Common signs include clutch pedal vibration, grinding noises when engaging/disengaging the clutch, difficulty shifting gears, or visible wear on bearing components.

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

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Release Bearing](https://cnfx.com/industry/motor-vehicle-manufacturing/product/release-bearing)**

### 🌐 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**: RELEASE_BEARING | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: b36c6c4f
