---
title: "Eccentric Shaft Assembly"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:ECCENTRIC_SHAFT_ASSEMBLY"
  data_integrity_hash: "542cc2147c4121715207100d14c6128a"
  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:ECCENTRIC_SHAFT_ASSEMBLY"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/eccentric-shaft-assembly.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/eccentric-shaft-assembly"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-3.0 mm eccentricity at 800-1800 RPM"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 120
    unit: "°C"
    consequence: "Brinelling fatigue from Hertzian contact stress exceeding 1.8 GPa at bearing-raceway interface during cyclic loading"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Lubricant viscosity breakdown at 90°C operating temperature"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Forced oil circulation cooling system maintaining lubricant at 40-60°C"
  - node_2:
      trigger: "Resonant vibration at 27 Hz matching shaft natural frequency"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Dynamic balancing to ISO 1940 G6.3 standard with damping mounts"
bom_nodes:
  eccentric-shaft:
    type: "part"
    urn: "URN:CNFX:ME:ECCENTRIC_SHAFT"
    interface_type: "physical-logic-coupled"
  eccentric-weights:
    type: "component"
    urn: "URN:CNFX:ME:ECCENTRIC_WEIGHTS"
    interface_type: "physical-logic-coupled"
  bearing-housings:
    type: "part"
    urn: "URN:CNFX:ME:BEARING_HOUSINGS"
    interface_type: "physical-logic-coupled"
  spherical-roller-bearings:
    type: "part"
    urn: "URN:CNFX:ME:SPHERICAL_ROLLER_BEARINGS"
    interface_type: "physical-logic-coupled"
  shaft-seals:
    type: "component"
    urn: "URN:CNFX:ME:SHAFT_SEALS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 286-2:2010 (LIMITS AND FITS)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI B4.1-1967 (PREFERRED LIMITS AND FITS FOR CYLINDRICAL PARTS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/eccentric-shaft-assembly.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "7c507289fbda0464fcc7035f721cd2443d17be3b68e75ef4580e1edc55acd0b9"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Eccentric Shaft Assembly

## 1. Technical Definition
A mechanical assembly that generates eccentric motion to drive vibration in screening and feeding equipment.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-3.0 mm eccentricity at 800-1800 RPM**. Failure boundary: **Eccentric bearing temperature exceeding 120°C or radial clearance exceeding 0.15 mm**, Mechanism: **Brinelling fatigue from Hertzian contact stress exceeding 1.8 GPa at bearing-raceway interface during cyclic loading**.

### 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 viscosity breakdown at 90°C operating temperature | 8 | Bearing seizure causing shaft deflection exceeding 0.25 mm | Forced oil circulation cooling system maintaining lubricant at 40-60°C |
| Resonant vibration at 27 Hz matching shaft natural frequency | 8 | Fatigue crack propagation at shaft shoulder fillet radius | Dynamic balancing to ISO 1940 G6.3 standard with damping mounts |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Eccentric Shaft](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/eccentric-shaft.md) `(Standalone System)`
- [Bearing Housings](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/bearing-housings.md) `(Standalone System)`
- [Spherical Roller Bearings](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/spherical-roller-bearings.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Vibratory Screen Deck**, **Feed Hopper with Flow Control**, **Vibration Isolation Mounts**  
**Downstream Applications**: Aggregates and Minerals, Recycled Materials, Food Grains and Cereals  

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

### Q: What is the primary function of an eccentric shaft assembly in machinery?
**A**: The eccentric shaft assembly generates controlled eccentric motion to drive vibration in screening, feeding, and conveying equipment, essential for material separation and flow in industrial processes.

### Q: What materials are used in manufacturing eccentric shaft assemblies?
**A**: Our eccentric shaft assemblies are constructed from high-grade alloy steel for structural components and bearing steel for precision parts, ensuring durability, wear resistance, and reliable performance under heavy loads.

### Q: What maintenance is required for eccentric shaft assemblies?
**A**: Regular maintenance includes lubrication of spherical roller bearings, inspection of shaft seals for wear, monitoring eccentric weights for balance, and checking bearing housings for proper alignment to prevent premature failure.

## 6. Manufacturing Compliance
- ISO 286-2:2010 (LIMITS AND FITS)
- ANSI B4.1-1967 (PREFERRED LIMITS AND FITS FOR CYLINDRICAL PARTS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Eccentric Shaft Assembly](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/eccentric-shaft-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**: ECCENTRIC_SHAFT_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 798c0bd3
