---
title: "Slewing Ring / Rotating Bearing"
industry: "Motor Vehicle Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:SLEWING_RING_ROTATING_BEARING"
  data_integrity_hash: "f5034bc98878baa3c5a5dab389b94f07"
  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_RING_ROTATING_BEARING"
  data_source_uri: "https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/slewing-ring-rotating-bearing.md"
  official_resource_url: "https://cnfx.com/industry/motor-vehicle-manufacturing/product/slewing-ring-rotating-bearing"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "Axial load: 50-5000 kN, Radial load: 20-2000 kN, Moment load: 10-1000 kN·m, Rotational speed: 0.1-30 rpm"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 1800
    unit: "MPa"
    consequence: "Hertzian contact fatigue (subsurface crack initiation at maximum shear stress depth of 0.786×contact radius), Lubrication starvation leading to adhesive wear (boundary lubrication failure), Brinelling from shock loads exceeding yield strength of bearing steel (typically 1500 MPa)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Contaminant ingress (particles &gt; 10 μm) into rolling element-raceway interface"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Triple-lip seal design with labyrinth path and grease purge ports, ISO 4406 cleanliness class 16/14/11 filtration"
  - node_2:
      trigger: "Misalignment exceeding 0.1° per meter of bearing diameter"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Crowned raceway profile (logarithmic or circular) with optimized radius-to-diameter ratio of 0.52, Stiffness-matched mounting structures"
bom_nodes:
  inner-ring:
    type: "component"
    urn: "URN:CNFX:ME:INNER_RING"
    interface_type: "physical-logic-coupled"
  outer-ring:
    type: "part"
    urn: "URN:CNFX:ME:OUTER_RING"
    interface_type: "physical-logic-coupled"
  rolling-elements:
    type: "component"
    urn: "URN:CNFX:ME:ROLLING_ELEMENTS"
    interface_type: "physical-logic-coupled"
  seals:
    type: "component"
    urn: "URN:CNFX:ME:SEALS"
    interface_type: "physical-logic-coupled"
  gear-ring:
    type: "component"
    urn: "URN:CNFX:ME:GEAR_RING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 1132-1:2000 - ROLLING BEARINGS - TOLERANCES"
    scope: "Verified Engineering Specification"
  - standard: "DIN 628-1:2017 - ROLLING BEARINGS - PART 1: TOLERANCES"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/slewing-ring-rotating-bearing.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "e355c72c5418e54b5d74f6c3b839146d7419fd1afb7d22b4ddab4c4f5e610a90"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Slewing Ring / Rotating Bearing

## 1. Technical Definition
A large-diameter bearing that enables rotational movement between two structures, handling combined loads (axial, radial, and moment).

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **Axial load: 50-5000 kN, Radial load: 20-2000 kN, Moment load: 10-1000 kN·m, Rotational speed: 0.1-30 rpm**. Failure boundary: **Contact stress exceeds 1800 MPa (Hertzian contact theory), Lubricant film thickness &lt; 0.1 μm (λ ratio &lt; 1), Raceway plastic deformation &gt; 0.2% strain**, Mechanism: **Hertzian contact fatigue (subsurface crack initiation at maximum shear stress depth of 0.786×contact radius), Lubrication starvation leading to adhesive wear (boundary lubrication failure), Brinelling from shock loads exceeding yield strength of bearing steel (typically 1500 MPa)**.

### 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 |
| :--- | :--- | :--- | :--- |
| Contaminant ingress (particles &gt; 10 μm) into rolling element-raceway interface | 8 | Indentation damage causing stress concentration and premature spalling | Triple-lip seal design with labyrinth path and grease purge ports, ISO 4406 cleanliness class 16/14/11 filtration |
| Misalignment exceeding 0.1° per meter of bearing diameter | 8 | Edge loading with localized contact stress exceeding 2500 MPa | Crowned raceway profile (logarithmic or circular) with optimized radius-to-diameter ratio of 0.52, Stiffness-matched mounting structures |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Outer Ring](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/outer-ring.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **CNC Machining Center**, **Induction Hardening Machine**, **Coordinate Measuring Machine**  
**Downstream Applications**: Excavators, Wind Turbines, Cranes  

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

### Q: What types of loads can automotive slewing rings handle?
**A**: Our slewing rings are engineered to handle combined loads including axial (thrust), radial, and moment (tilting) loads simultaneously, making them ideal for complex rotational applications in vehicle manufacturing.

### Q: What materials are used in your automotive slewing rings?
**A**: We use premium alloy steels like 42CrMo4 and case-hardened steel for optimal strength, durability, and wear resistance in demanding automotive production environments.

### Q: Can you customize slewing rings for specific vehicle manufacturing applications?
**A**: Yes, we offer custom engineering for gear teeth, mounting configurations, sealing systems, and load specifications to match your exact automotive assembly or testing equipment requirements.

## 6. Manufacturing Compliance
- ISO 1132-1:2000 - ROLLING BEARINGS - TOLERANCES
- DIN 628-1:2017 - ROLLING BEARINGS - PART 1: TOLERANCES

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Slewing Ring / Rotating Bearing](https://cnfx.com/industry/motor-vehicle-manufacturing/product/slewing-ring-rotating-bearing)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **5** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: SLEWING_RING_ROTATING_BEARING | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 228c4f7c
