---
title: "Pivot Bearing"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:PIVOT_BEARING"
  data_integrity_hash: "b95eecdebba35e202d882f442b437ad2"
  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:PIVOT_BEARING"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/pivot-bearing.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/pivot-bearing"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-1000 NÂ·m torque, -40Â°C to 120Â°C temperature, 0-1000 RPM rotational speed"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 1200
    unit: "NÂ"
    consequence: "Hertzian contact stress exceeding material yield strength (Ïƒ_max &gt; 1.1 GPa), thermal softening reducing hardness via Arrhenius-type diffusion (Q=150 kJ/mol), rolling contact fatigue initiating subsurface cracks at Ï„_max &gt; 0.4 GPa shear stress"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Lubricant film thickness reduction below 0.1 Î¼m (Î» &lt; 1) due to particulate contamination"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install 10 Î¼m absolute filtration with Î²â‚â‚€â‰¥200 rating, implement ferrographic oil analysis at 100-hour intervals"
  - node_2:
      trigger: "Misalignment exceeding 0.05Â° angular deviation from shaft axis"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate self-aligning spherical seat with Â±2Â° compensation, apply laser alignment during installation with &lt;0.01Â° tolerance"
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 1132-1:2000 (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 620-2:1994 (ROLLING BEARINGS - TOLERANCES - PART 2: MEASURING AND GAUGING PRINCIPLES FOR RADIAL BEARINGS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/pivot-bearing.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "fb1107c6053c5cf9d1c6b4e6ea1ad6251f8496346768e2c4431368f51e9b8bfe"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Pivot Bearing

## 1. Technical Definition
A bearing that allows rotational movement around a fixed pivot point in mechanical assemblies.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-1000 NÂ·m torque, -40Â°C to 120Â°C temperature, 0-1000 RPM rotational speed**. Failure boundary: **Yield strength exceeded at 1200 NÂ·m torque, Brinell hardness reduction below 200 HB at 150Â°C, surface fatigue spalling at 10â· cycles under 800 NÂ·m load**, Mechanism: **Hertzian contact stress exceeding material yield strength (Ïƒ_max &gt; 1.1 GPa), thermal softening reducing hardness via Arrhenius-type diffusion (Q=150 kJ/mol), rolling contact fatigue initiating subsurface cracks at Ï„_max &gt; 0.4 GPa shear 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 |
| :--- | :--- | :--- | :--- |
| Lubricant film thickness reduction below 0.1 Î¼m (Î» &lt; 1) due to particulate contamination | 8 | Boundary lubrication regime causing adhesive wear and seizure | Install 10 Î¼m absolute filtration with Î²â‚â‚€â‰¥200 rating, implement ferrographic oil analysis at 100-hour intervals |
| Misalignment exceeding 0.05Â° angular deviation from shaft axis | 8 | Edge loading producing 2.5Ã— nominal contact stress concentration | Integrate self-aligning spherical seat with Â±2Â° compensation, apply laser alignment during installation with &lt;0.01Â° tolerance |

## 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**, **Heat Treatment Furnace**, **Surface Grinding Machine**  
**Downstream Applications**: Excavator Swing Mechanism, Industrial Robot Joint Assembly, Heavy Machinery Turntable  

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

### Q: What materials are available for pivot bearings in machinery applications?
**A**: Our pivot bearings are manufactured using high-quality bearing steel, corrosion-resistant stainless steel, or durable bronze alloy to suit various industrial environments and load requirements.

### Q: What are the key components in a pivot bearing assembly?
**A**: A complete pivot bearing includes an inner race, outer race, rolling elements, cage/retainer for element spacing, and seals/shields for contamination protection and lubrication retention.

### Q: How do pivot bearings differ from other bearing types in equipment manufacturing?
**A**: Pivot bearings are specifically designed to facilitate rotational movement around a fixed axis point, making them ideal for applications like linkages, levers, and articulated joints where precise pivot motion is required.

## 6. Manufacturing Compliance
- ISO 1132-1:2000 (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 620-2:1994 (ROLLING BEARINGS - TOLERANCES - PART 2: MEASURING AND GAUGING PRINCIPLES FOR RADIAL BEARINGS)

---
### ðŸ› ï¸ Engineering Resource Access
ðŸ”— **[Full Specification: Pivot Bearing](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/pivot-bearing)**

### ðŸŒ 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**: PIVOT_BEARING | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: a13e908c
