---
title: "Precision Bearing Assembly"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:PRECISION_BEARING_ASSEMBLY"
  data_integrity_hash: "d4f6a5fbf83559354730dc8a2a635748"
  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:PRECISION_BEARING_ASSEMBLY"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/precision-bearing-assembly.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/precision-bearing-assembly"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-10000 rpm with radial runout &lt; 2.5 μm and axial runout &lt; 1.8 μm"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 4.2
    unit: "GPa"
    consequence: "Hertzian contact stress concentration at rolling element-raceway interface exceeding material fatigue limit (ISO 281:2007), combined with thermal expansion mismatch causing preload loss"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Contaminant ingress (particle size &gt; 3 μm) exceeding ISO 4406:1999 Class 14/11/8 cleanliness"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integral labyrinth seals with 0.05 mm radial clearance and positive-pressure purge system at 0.15 bar above ambient"
  - node_2:
      trigger: "Misalignment exceeding 0.0005 radians (angular) or 0.1 mm (parallel) per ISO 1132-1:2000 tolerance class 5"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Self-aligning spherical roller design with ±2° angular compliance and matched housing bore tolerance H7"
bom_nodes:
  inner-race:
    type: "component"
    urn: "URN:CNFX:ME:INNER_RACE"
    interface_type: "physical-logic-coupled"
  outer-race:
    type: "component"
    urn: "URN:CNFX:ME:OUTER_RACE"
    interface_type: "physical-logic-coupled"
  rolling-elements:
    type: "component"
    urn: "URN:CNFX:ME:ROLLING_ELEMENTS"
    interface_type: "physical-logic-coupled"
  cageretainer:
    type: "component"
    urn: "URN:CNFX:ME:CAGERETAINER"
    interface_type: "physical-logic-coupled"
  sealsshields:
    type: "component"
    urn: "URN:CNFX:ME:SEALSSHIELDS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 492:2014 - ROLLING BEARINGS - RADIAL BEARINGS - TOLERANCES"
    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 620-1:2017 - ROLLING BEARINGS - TOLERANCES - PART 1: TOLERANCES FOR RADIAL BEARINGS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/precision-bearing-assembly.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "a4c8424953d1410a82c051aa1fd868ea66938da7f0d6e8736ea599530b5e2222"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Precision Bearing Assembly

## 1. Technical Definition
A high-accuracy bearing system designed for precise rotational motion control in machinery.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-10000 rpm with radial runout &lt; 2.5 μm and axial runout &lt; 1.8 μm**. Failure boundary: **Contact stress exceeds 4.2 GPa (bearing steel yield strength) or operating temperature surpasses 150°C (lubricant breakdown threshold)**, Mechanism: **Hertzian contact stress concentration at rolling element-raceway interface exceeding material fatigue limit (ISO 281:2007), combined with thermal expansion mismatch causing preload loss**.

### 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 (particle size &gt; 3 μm) exceeding ISO 4406:1999 Class 14/11/8 cleanliness | 8 | Surface spalling and raceway pitting (ISO 15243:2017 failure mode B1) | Integral labyrinth seals with 0.05 mm radial clearance and positive-pressure purge system at 0.15 bar above ambient |
| Misalignment exceeding 0.0005 radians (angular) or 0.1 mm (parallel) per ISO 1132-1:2000 tolerance class 5 | 8 | Edge loading with contact ellipse truncation &gt; 20% (ISO/TS 16281:2008) | Self-aligning spherical roller design with ±2° angular compliance and matched housing bore tolerance H7 |

## 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**: **Precision Grinding Machine**, **Coordinate Measuring Machine (CMM)**, **Clean Room Assembly Station**  
**Downstream Applications**: CNC Machine Tools, Industrial Robots, Medical Imaging Equipment  

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

### Q: What materials are used in the Precision Bearing Assembly?
**A**: Our Precision Bearing Assembly uses high-carbon chromium steel for durability, ceramic for hybrid bearings to reduce friction, and stainless steel for corrosion resistance in harsh environments.

### Q: What are the main components in the BOM?
**A**: The Bill of Materials includes the Inner Race, Outer Race, Rolling Elements, Cage/Retainer, and Seals/Shields, ensuring reliable performance and longevity.

### Q: How does this bearing improve machinery performance?
**A**: It provides high-accuracy rotational motion control, reducing vibration and wear, which enhances machinery precision, efficiency, and operational lifespan.

## 6. Manufacturing Compliance
- ISO 492:2014 - ROLLING BEARINGS - RADIAL BEARINGS - TOLERANCES
- ANSI/ABMA 20:1996 - RADIAL BEARINGS OF BALL, CYLINDRICAL ROLLER AND SPHERICAL ROLLER TYPES - METRIC DESIGN
- DIN 620-1:2017 - ROLLING BEARINGS - TOLERANCES - PART 1: TOLERANCES FOR RADIAL BEARINGS

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

### 🌐 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**: PRECISION_BEARING_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 317faf23
