---
title: "Outer Ring"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:OUTER_RING"
  data_integrity_hash: "367dadb195d289d190d6f20d568d1bb4"
  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:OUTER_RING"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/outer-ring.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/outer-ring"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-150 MPa radial compressive stress, -40°C to 120°C operating temperature"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 180
    unit: "MPa"
    consequence: "Plastic deformation via von Mises yield criterion (σ_yield = 250 MPa for 42CrMo4 steel) or thermal stress-induced cracking from coefficient of thermal expansion mismatch (α_steel = 11.5×10^-6/°C)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Brinell hardness deviation below 280 HB in raceway surface"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Induction hardening to 55-60 HRC with 2.0-3.0 mm case depth"
  - node_2:
      trigger: "Bolt preload relaxation below 70% of 0.7×σ_yield"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hydraulic tensioning to 90% of bolt proof load with Nord-Lock washers"
bom_nodes:
  raceway:
    type: "component"
    urn: "URN:CNFX:ME:RACEWAY"
    interface_type: "physical-logic-coupled"
  mounting-holes:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_HOLES"
    interface_type: "physical-logic-coupled"
  sealing-groove:
    type: "component"
    urn: "URN:CNFX:ME:SEALING_GROOVE"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 3290-1:2014 (ROLLING BEARINGS - BALLS)"
    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 625-1:2011 (ROLLING BEARINGS - RADIAL BALL BEARINGS - BOUNDARY DIMENSIONS, TOLERANCES)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/outer-ring.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "37fa738b20d33e24ae301448bc8f8224926eee67373c5f81488a994ea430ae2a"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Outer Ring

## 1. Technical Definition
The stationary outer component of a slewing ring that provides structural support and mounting interface.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-150 MPa radial compressive stress, -40°C to 120°C operating temperature**. Failure boundary: **Exceeding 180 MPa radial compressive stress or 140°C thermal gradient differential across flange**, Mechanism: **Plastic deformation via von Mises yield criterion (σ_yield = 250 MPa for 42CrMo4 steel) or thermal stress-induced cracking from coefficient of thermal expansion mismatch (α_steel = 11.5×10^-6/°C)**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Brinell hardness deviation below 280 HB in raceway surface | 8 | Raceway spalling with 0.5-2.0 mm material displacement | Induction hardening to 55-60 HRC with 2.0-3.0 mm case depth |
| Bolt preload relaxation below 70% of 0.7×σ_yield | 8 | Interface fretting corrosion at mounting flange | Hydraulic tensioning to 90% of bolt proof load with Nord-Lock washers |

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

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

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

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

### Q: What is the primary function of an Outer Ring in machinery?
**A**: The Outer Ring serves as the stationary structural component of a slewing ring, providing mounting interfaces and supporting rotational loads in industrial equipment.

### Q: Which materials are commonly used for Outer Rings?
**A**: Outer Rings are typically manufactured from alloy steel or carbon steel, chosen for their strength, durability, and resistance to wear in heavy machinery applications.

### Q: What key features should I look for in an Outer Ring?
**A**: Key features include precision mounting holes for secure installation, a smooth raceway for bearing contact, and sealing grooves to protect against contaminants and maintain lubrication.

## 6. Manufacturing Compliance
- ISO 3290-1:2014 (ROLLING BEARINGS - BALLS)
- ANSI/ABMA 20-1996 (RADIAL BEARINGS OF BALL, CYLINDRICAL ROLLER, AND SPHERICAL ROLLER TYPES - METRIC DESIGN)
- DIN 625-1:2011 (ROLLING BEARINGS - RADIAL BALL BEARINGS - BOUNDARY DIMENSIONS, TOLERANCES)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Outer Ring](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/outer-ring)**

### 🌐 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**: OUTER_RING | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: cca3d437
