---
title: "Actuator Head"
industry: "Electrical Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:ACTUATOR_HEAD"
  data_integrity_hash: "c068e0db3015a18c38a9c534a3ad07d2"
  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:ACTUATOR_HEAD"
  data_source_uri: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/actuator-head.md"
  official_resource_url: "https://cnfx.com/industry/electrical-equipment-manufacturing/product/actuator-head"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.0 mm engagement displacement, 5-50 N actuation force, -40°C to +85°C ambient temperature"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 0.3
    unit: "mm"
    consequence: "Stress concentration at engagement interface exceeding material yield strength (σ_y = 250 MPa for hardened steel), thermal expansion mismatch (Δα = 12×10^-6 K^-1) causing binding, surface fatigue from cyclic loading at 10^6 cycles with S-N curve knee point"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Misalignment-induced bending moment (M_b = 2.5 N·m) exceeding design limit"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Kinematic coupling design with 3-point contact, hardened steel wear surfaces (HRC 58-62), alignment tolerance stack-up analysis limiting angular misalignment to ±0.5°"
  - node_2:
      trigger: "Contaminant ingress (ISO 4406 Class 18/16/13) causing abrasive wear"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "IP67-rated sealing with double-lip seals, surface finish Ra ≤ 0.8 μm to reduce adhesion, periodic maintenance at 10,000 cycles with lubricant replenishment (ISO VG 32)"
bom_nodes:
  actuator-buttonpad:
    type: "component"
    urn: "URN:CNFX:ME:ACTUATOR_BUTTONPAD"
    interface_type: "physical-logic-coupled"
  actuator-stemshaft:
    type: "component"
    urn: "URN:CNFX:ME:ACTUATOR_STEMSHAFT"
    interface_type: "physical-logic-coupled"
  return-spring:
    type: "component"
    urn: "URN:CNFX:ME:RETURN_SPRING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/actuator-head.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "d90424fd8d998a8dcee3a429d313acdeddfaccb3fdf62cad995aefd3dc456446"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Actuator Head

## 1. Technical Definition
The mechanical interface component of a door interlock switch that physically engages with the door or frame to detect position.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.0 mm engagement displacement, 5-50 N actuation force, -40°C to +85°C ambient temperature**. Failure boundary: **Plastic deformation at 0.3 mm permanent displacement, 60 N ultimate tensile load, 100°C glass transition temperature for polymer components**, Mechanism: **Stress concentration at engagement interface exceeding material yield strength (σ_y = 250 MPa for hardened steel), thermal expansion mismatch (Δα = 12×10^-6 K^-1) causing binding, surface fatigue from cyclic loading at 10^6 cycles with S-N curve knee point**.

### 2.1 Analytical Physics Model
Governed by the **Joule Heating & Thermal Resistance**:

> **Primary Equation**: $P = I^2 R = \frac{V^2}{R}$  
> **Engineering Impact**: Governs heating element sizing for shrink tunnels/sealers.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| I | Current | Engineering Constant |
| R | Resistance | Engineering Constant |
| V | Voltage | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Misalignment-induced bending moment (M_b = 2.5 N·m) exceeding design limit | 8 | Permanent deformation of engagement interface causing false position detection | Kinematic coupling design with 3-point contact, hardened steel wear surfaces (HRC 58-62), alignment tolerance stack-up analysis limiting angular misalignment to ±0.5° |
| Contaminant ingress (ISO 4406 Class 18/16/13) causing abrasive wear | 8 | Increased actuation force (F &gt; 55 N) leading to mechanism binding | IP67-rated sealing with double-lip seals, surface finish Ra ≤ 0.8 μm to reduce adhesion, periodic maintenance at 10,000 cycles with lubricant replenishment (ISO VG 32) |

## 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**, **Automated Assembly Line**  
**Downstream Applications**: Door Interlock Switches, Safety Interlock Systems, Electrical Control Panels  

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

### Q: What materials are used in this actuator head?
**A**: This actuator head is constructed from corrosion-resistant stainless steel and durable engineering plastics like POM (polyoxymethylene) or PA (polyamide) for long-lasting performance in industrial environments.

### Q: How does the actuator head work in a door interlock system?
**A**: The actuator head physically engages with the door or frame when closed, activating the interlock switch to detect the door's position and ensure safety by preventing access to hazardous areas when equipment is energized.

### Q: What components make up the actuator head assembly?
**A**: The actuator head consists of three main components: the actuator button/pad that contacts the door, the actuator stem/shaft that transmits the movement, and a return spring that resets the mechanism when the door opens.

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

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Actuator Head](https://cnfx.com/industry/electrical-equipment-manufacturing/product/actuator-head)**

### 🌐 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**: ACTUATOR_HEAD | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 661f8639
