---
title: "Swing Motor"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:SWING_MOTOR"
  data_integrity_hash: "9d6979997920fe20b7c5d02c9caea421"
  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:SWING_MOTOR"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/swing-motor.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/swing-motor"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "150-350 bar hydraulic pressure, 0-1800 rpm rotational speed, -40°C to 120°C operating temperature"
    unit: "cc/rev"
engineering_limits:
  max_safe_operating_point:
    value: 420
    unit: "bar"
    consequence: "Cavitation at hydraulic pressure below 100 bar causes vapor bubble implosion damaging internal surfaces, thermal fatigue from cyclic temperature variations exceeding 80°C differential creates microcracks in housing"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Hydraulic fluid contamination exceeding ISO 4406 18/16/13 cleanliness level"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install 3 μm absolute filtration with differential pressure monitoring at 0.8 bar threshold"
  - node_2:
      trigger: "Misalignment exceeding 0.05 mm/m between motor shaft and gearbox input"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Laser alignment during installation with 0.02 mm/m tolerance and quarterly alignment verification"
bom_nodes:
  motor-housing:
    type: "component"
    urn: "URN:CNFX:ME:MOTOR_HOUSING"
    interface_type: "physical-logic-coupled"
  shaft:
    type: "component"
    urn: "URN:CNFX:ME:SHAFT"
    interface_type: "physical-logic-coupled"
  pistonscylinders:
    type: "component"
    urn: "URN:CNFX:ME:PISTONSCYLINDERS"
    interface_type: "physical-logic-coupled"
  valve-plate:
    type: "component"
    urn: "URN:CNFX:ME:VALVE_PLATE"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 4401:2005 (HYDRAULIC FLUID POWER - FOUR-PORT DIRECTIONAL CONTROL VALVES - MOUNTING SURFACES)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/B93.5M-1985 (HYDRAULIC FLUID POWER - MOTORS - METHODS OF TESTING)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/swing-motor.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "df27a427423a0737f713f25f6c3a83a0df5b7ea9df0ee1c79ab7d7d3f96230b1"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Swing Motor

## 1. Technical Definition
A hydraulic or electric motor that provides rotational power to drive the swing mechanism of heavy machinery.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **150-350 bar hydraulic pressure, 0-1800 rpm rotational speed, -40°C to 120°C operating temperature**. Failure boundary: **Hydraulic pressure exceeding 420 bar causes seal extrusion failure, rotational speed exceeding 2200 rpm induces bearing fatigue failure, temperature exceeding 150°C degrades hydraulic fluid viscosity below 10 cSt**, Mechanism: **Cavitation at hydraulic pressure below 100 bar causes vapor bubble implosion damaging internal surfaces, thermal fatigue from cyclic temperature variations exceeding 80°C differential creates microcracks in housing**.

### 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 |
| :--- | :--- | :--- | :--- |
| Hydraulic fluid contamination exceeding ISO 4406 18/16/13 cleanliness level | 8 | Spool valve sticking causing erratic swing motion | Install 3 μm absolute filtration with differential pressure monitoring at 0.8 bar threshold |
| Misalignment exceeding 0.05 mm/m between motor shaft and gearbox input | 8 | Bearing premature wear with vibration amplitude exceeding 4.5 mm/s RMS | Laser alignment during installation with 0.02 mm/m tolerance and quarterly alignment verification |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Hydraulic Power Unit**, **Control System Cabinet**, **Cooling System**  
**Downstream Applications**: Excavators, Cranes, Drilling Rigs  

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

### Q: What is the typical lifespan of a swing motor in heavy machinery?
**A**: With proper maintenance, swing motors typically last 5,000-10,000 operating hours. Lifespan depends on operating conditions, maintenance schedules, and load requirements.

### Q: Can swing motors be repaired or must they be replaced entirely?
**A**: Many swing motors can be repaired through component replacement (pistons, seals, bushings). Complete replacement is usually only necessary when the housing or shaft is severely damaged.

### Q: What maintenance is required for swing motors?
**A**: Regular maintenance includes checking hydraulic fluid quality, monitoring for leaks, inspecting seals and bushings for wear, and ensuring proper lubrication of moving components.

## 6. Manufacturing Compliance
- ISO 4401:2005 (HYDRAULIC FLUID POWER - FOUR-PORT DIRECTIONAL CONTROL VALVES - MOUNTING SURFACES)
- ANSI/B93.5M-1985 (HYDRAULIC FLUID POWER - MOTORS - METHODS OF TESTING)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Swing Motor](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/swing-motor)**

### 🌐 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**: SWING_MOTOR | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: e8a56741
