---
title: "Torque Motor / Coil Assembly"
industry: "Electrical Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:TORQUE_MOTOR_COIL_ASSEMBLY"
  data_integrity_hash: "323a0c47628608526e5e93ec9d8b2c87"
  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:TORQUE_MOTOR_COIL_ASSEMBLY"
  data_source_uri: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/torque-motor-coil-assembly.md"
  official_resource_url: "https://cnfx.com/industry/electrical-equipment-manufacturing/product/torque-motor-coil-assembly"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-5.0 N·m at 4-20 mA input, 24 VDC supply, 25°C ambient"
    unit: "N·m/A"
engineering_limits:
  max_safe_operating_point:
    value: 180
    unit: "°C"
    consequence: "Joule heating (I²R) exceeding Curie temperature (770°C for iron core), causing permanent magnetic property loss and insulation degradation"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Coil insulation breakdown due to dielectric strength reduction at 180°C"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Class H insulation (180°C rated) with thermal fuse at 165°C"
  - node_2:
      trigger: "Magnetic core saturation at 1.8 T flux density from 30 mA overcurrent"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Current limiting circuit with 25 mA cutoff and laminated silicon steel core (0.35 mm thickness)"
bom_nodes:
  coil-winding:
    type: "component"
    urn: "URN:CNFX:ME:COIL_WINDING"
    interface_type: "physical-logic-coupled"
  armature:
    type: "component"
    urn: "URN:CNFX:ME:ARMATURE"
    interface_type: "physical-logic-coupled"
  magnetic-circuit:
    type: "component"
    urn: "URN:CNFX:ME:MAGNETIC_CIRCUIT"
    interface_type: "physical-logic-coupled"
  terminal-block:
    type: "part"
    urn: "URN:CNFX:ME:TERMINAL_BLOCK"
    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/torque-motor-coil-assembly.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "91d9857e833bd40a6548819e424dee0c0d28bf48f6384ebb502f31bd72e556e2"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Torque Motor / Coil Assembly

## 1. Technical Definition
Electromagnetic actuator assembly that converts electrical current into precise mechanical torque within an I/P converter.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-5.0 N·m at 4-20 mA input, 24 VDC supply, 25°C ambient**. Failure boundary: **Coil insulation breakdown at 180°C, magnetic saturation at 1.8 T flux density, mechanical yield at 350 MPa stress**, Mechanism: **Joule heating (I²R) exceeding Curie temperature (770°C for iron core), causing permanent magnetic property loss and insulation degradation**.

### 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 |
| :--- | :--- | :--- | :--- |
| Coil insulation breakdown due to dielectric strength reduction at 180°C | 8 | Inter-turn short circuit causing 85% torque output reduction | Class H insulation (180°C rated) with thermal fuse at 165°C |
| Magnetic core saturation at 1.8 T flux density from 30 mA overcurrent | 8 | Non-linear torque response beyond 4.2 N·m, hysteresis loss increase to 45 W | Current limiting circuit with 25 mA cutoff and laminated silicon steel core (0.35 mm thickness) |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | N·m/A | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Terminal Block](https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/terminal-block.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Precision Power Supply**, **Cooling System**, **Motion Controller**  
**Downstream Applications**: Industrial Valve Actuators, Process Control Instruments, Robotic Gripping Systems  

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

### Q: What is the primary function of this torque motor/coil assembly?
**A**: This electromagnetic actuator assembly converts electrical current into precise mechanical torque within I/P (current-to-pressure) converters, enabling accurate control in industrial automation systems.

### Q: What materials are used in the construction of this assembly?
**A**: The assembly utilizes copper wire for windings, electrical insulation materials, magnetic core materials like silicon steel for efficient flux paths, and structural plastics or metals for durability and stability.

### Q: How does this torque motor assembly ensure reliable performance in electrical equipment?
**A**: With components like the coil winding, armature, magnetic circuit, and terminal block, it delivers consistent torque output, minimal hysteresis, and robust operation in demanding industrial environments.

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

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Torque Motor / Coil Assembly](https://cnfx.com/industry/electrical-equipment-manufacturing/product/torque-motor-coil-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**: TORQUE_MOTOR_COIL_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 7587113b
