---
title: "Compaction Drum"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:COMPACTION_DRUM"
  data_integrity_hash: "d3c902a487b823b7c652b7a1ceb8c058"
  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:COMPACTION_DRUM"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/compaction-drum.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/compaction-drum"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "1.5-3.0 MPa contact pressure, 0.5-2.0 m/s linear velocity, 40-90°C surface temperature"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 450
    unit: "MPa"
    consequence: "Plastic deformation from Hertzian contact stress exceeding material yield strength, thermal softening from frictional heating reducing material hardness below 35 HRC"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Asymmetric loading from uneven ground reaction forces exceeding 15% differential"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Finite element analysis-optimized rib reinforcement with 8 mm minimum fillet welds"
  - node_2:
      trigger: "Abrasive particle embedment (SiO2 hardness 7 Mohs) exceeding 0.3 mm penetration depth"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Boron steel cladding (55 HRC) with 5 mm minimum thickness and 0.8 mm wear allowance"
bom_nodes:
  drum-shell:
    type: "component"
    urn: "URN:CNFX:ME:DRUM_SHELL"
    interface_type: "physical-logic-coupled"
  vibration-mechanism:
    type: "part"
    urn: "URN:CNFX:ME:VIBRATION_MECHANISM"
    interface_type: "physical-logic-coupled"
  mounting-shaftbearings:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_SHAFTBEARINGS"
    interface_type: "physical-logic-coupled"
  scraper-blade:
    type: "component"
    urn: "URN:CNFX:ME:SCRAPER_BLADE"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING - MACHINERY DIRECTIVE 2006/42/EC"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/compaction-drum.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "b34365acac7206325385e4ca74eb6e14790462f2b3f3268c433a8eaa5fb20b88"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Compaction Drum

## 1. Technical Definition
The cylindrical component of a road roller that directly contacts and compacts the ground surface.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **1.5-3.0 MPa contact pressure, 0.5-2.0 m/s linear velocity, 40-90°C surface temperature**. Failure boundary: **Yield strength exceedance at 450 MPa von Mises stress, Hertzian contact stress &gt; 1.2 GPa, surface temperature &gt; 120°C**, Mechanism: **Plastic deformation from Hertzian contact stress exceeding material yield strength, thermal softening from frictional heating reducing material hardness below 35 HRC**.

### 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 |
| :--- | :--- | :--- | :--- |
| Asymmetric loading from uneven ground reaction forces exceeding 15% differential | 8 | Bending fatigue crack initiation at drum-shell weld interface | Finite element analysis-optimized rib reinforcement with 8 mm minimum fillet welds |
| Abrasive particle embedment (SiO2 hardness 7 Mohs) exceeding 0.3 mm penetration depth | 8 | Accelerated surface wear reducing drum diameter below 1495 mm tolerance | Boron steel cladding (55 HRC) with 5 mm minimum thickness and 0.8 mm wear allowance |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Road Roller Chassis**, **Hydraulic Power Unit**, **Vibration System**  
**Downstream Applications**: Compacted Asphalt Roads, Compacted Soil Foundations, Compacted Gravel Bases  

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

### Q: What materials are used in compaction drum construction?
**A**: Our compaction drums are manufactured from high-strength alloy steel for maximum durability and wear resistance in demanding construction environments.

### Q: What maintenance does a compaction drum require?
**A**: Regular inspection of the scraper blade, bearing lubrication, and vibration mechanism checks are recommended. The drum shell should be inspected for wear and damage after heavy use.

### Q: How does the vibration mechanism improve compaction efficiency?
**A**: The integrated vibration mechanism creates dynamic forces that enhance soil and asphalt compaction, allowing for faster project completion and superior density results.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- CE MARKING - MACHINERY DIRECTIVE 2006/42/EC

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Compaction Drum](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/compaction-drum)**

### 🌐 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**: COMPACTION_DRUM | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 9b9da3e2
