---
title: "Reaction Plate/Housing"
industry: "Motor Vehicle Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:REACTION_PLATEHOUSING"
  data_integrity_hash: "5d718ee23d22cd89f16cda201b440f1f"
  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:REACTION_PLATEHOUSING"
  data_source_uri: "https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/reaction-platehousing.md"
  official_resource_url: "https://cnfx.com/industry/motor-vehicle-manufacturing/product/reaction-platehousing"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-25 MPa compressive stress, -40°C to 300°C temperature"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 350
    unit: "MPa"
    consequence: "High-cycle fatigue from cyclic compressive loading exceeding 10^6 cycles at 15 MPa amplitude, or thermal stress from coefficient of thermal expansion mismatch (CTE difference &gt; 5×10^-6 K^-1) between housing and mating components"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Surface roughness Ra &gt; 3.2 μm at mounting interfaces"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Precision grinding to Ra ≤ 0.8 μm with controlled surface waviness &lt; 0.05 mm"
  - node_2:
      trigger: "Residual tensile stress &gt; 150 MPa from improper heat treatment"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Shot peening to induce 200-300 MPa compressive residual stress layer, depth ≥ 0.1 mm"
bom_nodes:
  mounting-flange:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_FLANGE"
    interface_type: "physical-logic-coupled"
  friction-surface:
    type: "component"
    urn: "URN:CNFX:ME:FRICTION_SURFACE"
    interface_type: "physical-logic-coupled"
  cooling-finsribs:
    type: "component"
    urn: "URN:CNFX:ME:COOLING_FINSRIBS"
    interface_type: "physical-logic-coupled"
  bolt-holes:
    type: "component"
    urn: "URN:CNFX:ME:BOLT_HOLES"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING - CONFORMITY WITH EU DIRECTIVES FOR PRESSURE EQUIPMENT (PED 2014/68/EU)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/reaction-platehousing.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "8b6253c810227f2680bb68a872e641f486023139b995167cd0630c98a990a988"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Reaction Plate/Housing

## 1. Technical Definition
A structural component in brake/clutch assemblies that provides mounting and reaction force transmission.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-25 MPa compressive stress, -40°C to 300°C temperature**. Failure boundary: **Yield strength exceeded at 350 MPa compressive stress, or thermal expansion mismatch exceeding 0.5 mm displacement at interfaces**, Mechanism: **High-cycle fatigue from cyclic compressive loading exceeding 10^6 cycles at 15 MPa amplitude, or thermal stress from coefficient of thermal expansion mismatch (CTE difference &gt; 5×10^-6 K^-1) between housing and mating components**.

### 2.1 Analytical Physics Model
Governed by the **Thin-Wall Pressure Vessel Stress Analysis**:

> **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$  
> **Engineering Impact**: Determines the hoop stress boundary to prevent rupture.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Internal Pressure | Engineering Constant |
| D | Diameter | Engineering Constant |
| t | Wall Thickness | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Surface roughness Ra &gt; 3.2 μm at mounting interfaces | 8 | Micro-motion fretting wear exceeding 0.1 mm depth, leading to bolt preload loss | Precision grinding to Ra ≤ 0.8 μm with controlled surface waviness &lt; 0.05 mm |
| Residual tensile stress &gt; 150 MPa from improper heat treatment | 8 | Stress corrosion cracking initiating at stress concentrations (Kt &gt; 3) | Shot peening to induce 200-300 MPa compressive residual stress layer, depth ≥ 0.1 mm |

## 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**, **Industrial Washing System**, **Coordinate Measuring Machine**  
**Downstream Applications**: Brake Caliper Assembly, Clutch Assembly, Transmission System  

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

### Q: What is the primary function of a reaction plate/housing in motor vehicle manufacturing?
**A**: The reaction plate/housing serves as a structural component in brake and clutch assemblies, providing secure mounting points and transmitting reaction forces between moving parts to ensure proper operation and safety.

### Q: What materials are commonly used for reaction plates/housings and how do they differ?
**A**: Common materials include cast iron for high strength and heat resistance, aluminum alloy for lightweight applications with good thermal conductivity, and steel for balanced durability and cost-effectiveness in various vehicle systems.

### Q: What key features should I look for in a quality reaction plate/housing?
**A**: Look for precision bolt holes for secure mounting, integrated cooling fins/ribs for heat dissipation, a smooth friction surface for consistent performance, and a robust mounting flange that ensures structural integrity under operational stresses.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- CE MARKING - CONFORMITY WITH EU DIRECTIVES FOR PRESSURE EQUIPMENT (PED 2014/68/EU)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Reaction Plate/Housing](https://cnfx.com/industry/motor-vehicle-manufacturing/product/reaction-platehousing)**

### 🌐 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**: REACTION_PLATEHOUSING | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 13453461
