---
title: "Eccentric Weight Assembly"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:ECCENTRIC_WEIGHT_ASSEMBLY"
  data_integrity_hash: "803fe576b1c0b00b385402aee3702006"
  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_WEIGHT_ASSEMBLY"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/eccentric-weight-assembly.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/eccentric-weight-assembly"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "1500-3600 RPM rotational speed, 0.5-12.5 kN centrifugal force"
    unit: "kg·m"
engineering_limits:
  max_safe_operating_point:
    value: 15
    unit: "kN"
    consequence: "Fatigue failure from cyclic stress exceeding 250 MPa at stress concentration points during unbalanced rotation"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Bearing lubrication degradation below 0.1 mm oil film thickness"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Forced lubrication system with 0.3 MPa pressure and 40 μm filtration"
  - node_2:
      trigger: "Mass imbalance exceeding 15 g·mm eccentricity tolerance"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Dynamic balancing to 2.5 g·mm residual unbalance with ISO 1940 G6.3 grade"
bom_nodes:
  eccentric-weight:
    type: "component"
    urn: "URN:CNFX:ME:ECCENTRIC_WEIGHT"
    interface_type: "physical-logic-coupled"
  shaft:
    type: "component"
    urn: "URN:CNFX:ME:SHAFT"
    interface_type: "physical-logic-coupled"
  bearing-housing:
    type: "component"
    urn: "URN:CNFX:ME:BEARING_HOUSING"
    interface_type: "physical-logic-coupled"
  drive-coupling:
    type: "part"
    urn: "URN:CNFX:ME:DRIVE_COUPLING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 1940-1:2003 - BALANCE QUALITY REQUIREMENTS FOR ROTORS IN A CONSTANT (RIGID) STATE"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/AGMA 2000-A88 - GEAR CLASSIFICATION AND INSPECTION HANDBOOK"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/eccentric-weight-assembly.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "a9bc0769aec442206f41c77080d706836922b76b09fe8b3fb192b83becfe2a7b"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Eccentric Weight Assembly

## 1. Technical Definition
A rotating mass assembly that generates centrifugal force for vibration in compaction equipment.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **1500-3600 RPM rotational speed, 0.5-12.5 kN centrifugal force**. Failure boundary: **Material yield strength exceeded at 15 kN centrifugal force or 4000 RPM rotational speed**, Mechanism: **Fatigue failure from cyclic stress exceeding 250 MPa at stress concentration points during unbalanced rotation**.

### 2.1 Analytical Physics Model
Governed by the **Harmonic Vibration Force Generation**:

> **Primary Equation**: $F_e = m \cdot r \cdot \omega^2 \sin(\omega t)$  
> **Engineering Impact**: Calculates centrifugal force for vibratory sifters/feeders.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| m | Eccentric Mass | Engineering Constant |
| r | Radius | Engineering Constant |
| \omega | Angular Frequency | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Bearing lubrication degradation below 0.1 mm oil film thickness | 8 | Shaft seizure at 180°C bearing temperature | Forced lubrication system with 0.3 MPa pressure and 40 μm filtration |
| Mass imbalance exceeding 15 g·mm eccentricity tolerance | 8 | Resonant vibration at 85 Hz natural frequency | Dynamic balancing to 2.5 g·mm residual unbalance with ISO 1940 G6.3 grade |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Drive Coupling](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/drive-coupling.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Hydraulic Power Unit**, **Vibration Monitoring System**, **Compaction Equipment Frame**  
**Downstream Applications**: Compacted Soil Foundations, Asphalt Road Surfaces, Concrete Slabs  

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

### Q: What is the primary function of an eccentric weight assembly in compaction equipment?
**A**: The eccentric weight assembly creates controlled vibration through centrifugal force when rotated, which helps compact materials like soil, asphalt, or concrete in construction and industrial applications.

### Q: Why is high-strength alloy steel used for eccentric weight assemblies?
**A**: High-strength alloy steel provides exceptional durability, wear resistance, and fatigue strength to withstand continuous rotational forces and harsh operating conditions in heavy machinery.

### Q: What maintenance is required for eccentric weight assemblies in vibration equipment?
**A**: Regular inspection for wear, proper lubrication of bearings and shafts, and checking torque on fasteners are essential. Replace components showing significant wear to prevent equipment failure.

## 6. Manufacturing Compliance
- ISO 1940-1:2003 - BALANCE QUALITY REQUIREMENTS FOR ROTORS IN A CONSTANT (RIGID) STATE
- ANSI/AGMA 2000-A88 - GEAR CLASSIFICATION AND INSPECTION HANDBOOK

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Eccentric Weight Assembly](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/eccentric-weight-assembly)**

### 🌐 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**: ECCENTRIC_WEIGHT_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 59540fe1
