---
title: "Slewing Bearing"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:SLEWING_BEARING"
  data_integrity_hash: "0d4188a7213b424f6dccb0b027247052"
  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_BEARING"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/slewing-bearing.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/slewing-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, Speed: 0.1-30 rpm, Temperature: -40°C to +120°C"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 4000
    unit: "MPa"
    consequence: "Surface fatigue (pitting) due to cyclic Hertzian contact stresses exceeding material endurance limit, Brinelling from shock loads exceeding yield strength (typically 1800 MPa for 52100 steel), Lubrication starvation causing adhesive wear when EHD film collapses"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Contaminant ingress (particles &gt;15 μm) into raceway"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Triple-lip sealing with labyrinth design and positive pressure grease purge system"
  - node_2:
      trigger: "Misalignment exceeding 0.05° per meter of diameter"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Crowned raceway profile with 0.0005×diameter crowning and spherical mounting surfaces"
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"
manufacturing_compliance:
  - standard: "ISO 1132-1:2012 - ROLLING BEARINGS - TOLERANCES - PART 1: TERMS AND DEFINITIONS"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ABMA 20-1996 - RADIAL BEARINGS OF BALL, CYLINDRICAL ROLLER AND SPHERICAL ROLLER TYPES - METRIC DESIGN"
    scope: "Verified Engineering Specification"
  - standard: "DIN 628-1:2012 - ROLLING BEARINGS - PART 1: TOLERANCES"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/slewing-bearing.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "1da35ccb5c3dcc4a27ead6b62bb1e88ab99672ce4e6d50fe16259ab83f8e1f50"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Slewing Bearing

## 1. Technical Definition
A precision bearing that enables rotational movement between two components while supporting axial, radial, and moment loads.

## 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, Speed: 0.1-30 rpm, Temperature: -40°C to +120°C**. Failure boundary: **Contact stress exceeds 4000 MPa (Hertzian stress limit for hardened steel), Raceway deformation exceeds 0.1 mm, Lubricant film thickness drops below 0.5 μm (λ ratio &lt;1)**, Mechanism: **Surface fatigue (pitting) due to cyclic Hertzian contact stresses exceeding material endurance limit, Brinelling from shock loads exceeding yield strength (typically 1800 MPa for 52100 steel), Lubrication starvation causing adhesive wear when EHD film collapses**.

### 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;15 μm) into raceway | 8 | Abrasive wear creating surface spalling and increased torque | Triple-lip sealing with labyrinth design and positive pressure grease purge system |
| Misalignment exceeding 0.05° per meter of diameter | 8 | Edge loading causing localized stress concentration and premature fatigue | Crowned raceway profile with 0.0005×diameter crowning and spherical mounting surfaces |

## 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, Industrial Cranes  

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

### Q: What types of loads can slewing bearings support in machinery applications?
**A**: Slewing bearings are engineered to simultaneously handle axial loads (parallel to rotation axis), radial loads (perpendicular to axis), and moment loads (tilting forces), making them ideal for complex machinery applications requiring multi-directional support.

### Q: What materials are used in manufacturing high-quality slewing bearings?
**A**: Premium slewing bearings are typically constructed from high-carbon chromium bearing steel (like 52100) or alloy steels, providing exceptional hardness, wear resistance, and durability under heavy loads in industrial environments.

### Q: What are the main components included in a slewing bearing assembly?
**A**: A complete slewing bearing consists of four key components: the inner ring, outer ring, rolling elements (balls or rollers), and seals to protect against contamination and retain lubrication for optimal performance.

## 6. Manufacturing Compliance
- ISO 1132-1:2012 - ROLLING BEARINGS - TOLERANCES - PART 1: TERMS AND DEFINITIONS
- ANSI/ABMA 20-1996 - RADIAL BEARINGS OF BALL, CYLINDRICAL ROLLER AND SPHERICAL ROLLER TYPES - METRIC DESIGN
- DIN 628-1:2012 - ROLLING BEARINGS - PART 1: TOLERANCES

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Slewing Bearing](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/slewing-bearing)**

### 🌐 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**: SLEWING_BEARING | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 424e844f
