---
title: "Magnetic Coupling"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:MAGNETIC_COUPLING"
  data_integrity_hash: "a972a967125f776f8b7cb03e953727d3"
  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:MAGNETIC_COUPLING"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/magnetic-coupling.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/magnetic-coupling"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-150 N·m torque transmission through 0.5-10 mm air gaps at 0-6000 RPM"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 0.8
    unit: "T"
    consequence: "Curie temperature demagnetization (NdFeB magnets lose 0.11% magnetic flux per °C above 80°C) and eddy current heating exceeding 150 W/cm²"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Axial misalignment exceeding 0.3 mm during 5000 RPM operation"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Double-row angular contact bearings with 15 μm axial clearance and laser alignment to 0.05 mm tolerance"
  - node_2:
      trigger: "Conductive particle accumulation creating 0.5 Ω short circuit path across air gap"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hermetic sealing with IP68 rating and 99.97% HEPA filtration on cooling air intake"
bom_nodes:
  drive-magnet-assembly:
    type: "part"
    urn: "URN:CNFX:ME:DRIVE_MAGNET_ASSEMBLY"
    interface_type: "physical-logic-coupled"
  driven-magnet-assembly:
    type: "component"
    urn: "URN:CNFX:ME:DRIVEN_MAGNET_ASSEMBLY"
    interface_type: "physical-logic-coupled"
  bearing-system:
    type: "part"
    urn: "URN:CNFX:ME:BEARING_SYSTEM"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 1940-1:2003 (BALANCE QUALITY REQUIREMENTS FOR RIGID ROTORS)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/AGMA 2000-A88 (GEAR CLASSIFICATION AND INSPECTION HANDBOOK - RELEVANT FOR COUPLING ALIGNMENT)"
    scope: "Verified Engineering Specification"
  - standard: "DIN 740-2:1986 (FLEXIBLE SHAFT COUPLINGS - MAGNETIC COUPLINGS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/magnetic-coupling.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "7d7933b0b348c3bbe54801a4440ae0a4d578527975683d51e3b947ccb27a918d"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Magnetic Coupling

## 1. Technical Definition
A non-contact torque transmission device that uses magnetic fields to transfer motion through a barrier.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-150 N·m torque transmission through 0.5-10 mm air gaps at 0-6000 RPM**. Failure boundary: **Magnetic flux density drops below 0.8 T at 85°C permanent magnet temperature or 1.2 mm eddy current displacement**, Mechanism: **Curie temperature demagnetization (NdFeB magnets lose 0.11% magnetic flux per °C above 80°C) and eddy current heating exceeding 150 W/cm²**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Axial misalignment exceeding 0.3 mm during 5000 RPM operation | 8 | Radial magnetic force oscillation at 83.3 Hz causing 12 μm vibration amplitude | Double-row angular contact bearings with 15 μm axial clearance and laser alignment to 0.05 mm tolerance |
| Conductive particle accumulation creating 0.5 Ω short circuit path across air gap | 8 | Eddy current losses increase from 5% to 40% efficiency drop at 3000 RPM | Hermetic sealing with IP68 rating and 99.97% HEPA filtration on cooling air intake |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Variable Frequency Drive**, **Cooling System**, **Alignment Fixture**  
**Downstream Applications**: Centrifugal Pumps, Agitators, Conveyor Systems  

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

### Q: What are the main advantages of using a magnetic coupling in machinery?
**A**: Magnetic couplings provide leak-proof torque transmission through barriers, eliminate mechanical wear from contact, require no lubrication, and offer overload protection through slip capability.

### Q: How does the PTFE seal enhance magnetic coupling performance?
**A**: PTFE seals provide chemical resistance, maintain integrity across temperature variations, and create reliable barriers for applications involving fluids or controlled environments.

### Q: What maintenance is required for neodymium magnet couplings?
**A**: Minimal maintenance is needed due to non-contact operation. Periodic inspection of bearings and seals is recommended, with magnet strength typically lasting decades under normal operating conditions.

## 6. Manufacturing Compliance
- ISO 1940-1:2003 (BALANCE QUALITY REQUIREMENTS FOR RIGID ROTORS)
- ANSI/AGMA 2000-A88 (GEAR CLASSIFICATION AND INSPECTION HANDBOOK - RELEVANT FOR COUPLING ALIGNMENT)
- DIN 740-2:1986 (FLEXIBLE SHAFT COUPLINGS - MAGNETIC COUPLINGS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Magnetic Coupling](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/magnetic-coupling)**

### 🌐 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**: MAGNETIC_COUPLING | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: afedd37b
