---
title: "Slewing Motor"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:SLEWING_MOTOR"
  data_integrity_hash: "4aa71a4dc7f39e4ef5d83bebc01d6ac8"
  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:SLEWING_MOTOR"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/slewing-motor.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/slewing-motor"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-15 NÂ·m continuous torque at 100-3000 rpm, 24-48 VDC input, -20Â°C to +85Â°C ambient"
    unit: "Nm"
engineering_limits:
  max_safe_operating_point:
    value: 22
    unit: "NÂ"
    consequence: "Permanent magnet demagnetization at Curie temperature of 310Â°C for NdFeB magnets, bearing Brinell fatigue at &gt;1.8 GPa contact stress"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Brush arcing at &gt;3.5 A/mmÂ² current density during commutation"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Silver-graphite brush material with 2.5 A/mmÂ² rating and 0.15 Î© contact resistance specification"
  - node_2:
      trigger: "Radial misalignment &gt;0.05 mm between motor shaft and gearbox input"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Flexible coupling with 0.02 mm parallel misalignment tolerance and 0.5Â° angular compensation"
bom_nodes:
  rotor:
    type: "part"
    urn: "URN:CNFX:ME:ROTOR"
    interface_type: "physical-logic-coupled"
  stator:
    type: "part"
    urn: "URN:CNFX:ME:STATOR"
    interface_type: "physical-logic-coupled"
  housing:
    type: "component"
    urn: "URN:CNFX:ME:HOUSING"
    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-1995 (HYDRAULIC FLUID POWER - CYLINDERS - BORE AND ROD AREA"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/slewing-motor.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "e2f58effc21a2c4f5833e66866ef3a379fb3bfb77019c3fc8bb58efe34b21717"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Slewing Motor

## 1. Technical Definition
A motor that provides rotational motion for slewing mechanisms in machinery.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-15 NÂ·m continuous torque at 100-3000 rpm, 24-48 VDC input, -20Â°C to +85Â°C ambient**. Failure boundary: **Torque exceeding 22 NÂ·m for &gt;5 seconds, winding temperature &gt;155Â°C, radial load &gt;500 N at shaft end**, Mechanism: **Permanent magnet demagnetization at Curie temperature of 310Â°C for NdFeB magnets, bearing Brinell fatigue at &gt;1.8 GPa contact stress**.

### 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 |
| :--- | :--- | :--- | :--- |
| Brush arcing at &gt;3.5 A/mmÂ² current density during commutation | 8 | Commutator carbonization increasing contact resistance to &gt;0.5 Î© | Silver-graphite brush material with 2.5 A/mmÂ² rating and 0.15 Î© contact resistance specification |
| Radial misalignment &gt;0.05 mm between motor shaft and gearbox input | 8 | Bearing inner race fretting wear generating &gt;15 Î¼m clearance | Flexible coupling with 0.02 mm parallel misalignment tolerance and 0.5Â° angular compensation |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Rotor](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/rotor.md) `(Standalone System)`
- [Stator](https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/stator.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Hydraulic Power Unit**, **Gear Reducer**, **Control Panel**  
**Downstream Applications**: Excavators, Cranes, Wind Turbines  

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

### Q: What are the main applications of a slewing motor in machinery manufacturing?
**A**: Slewing motors are essential for rotational motion in cranes, excavators, turntables, and other industrial equipment requiring precise 360-degree movement.

### Q: How do copper windings and steel laminations improve motor performance?
**A**: Copper windings provide efficient electrical conductivity for optimal torque, while steel laminations reduce energy loss through eddy currents, enhancing durability and efficiency.

### Q: What maintenance is required for aluminum housing slewing motors?
**A**: Regular inspection for corrosion, cleaning of ventilation paths, and lubrication of bearings are recommended to ensure longevity in industrial environments.

## 6. Manufacturing Compliance
- ISO 4401:2005 (HYDRAULIC FLUID POWER - FOUR-PORT DIRECTIONAL CONTROL VALVES - MOUNTING SURFACES)
- ANSI/B93.5M-1995 (HYDRAULIC FLUID POWER - CYLINDERS - BORE AND ROD AREA

---
### ðŸ› ï¸ Engineering Resource Access
ðŸ”— **[Full Specification: Slewing Motor](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/slewing-motor)**

### ðŸŒ 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**: SLEWING_MOTOR | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 9f69f67a
