---
title: "Drum Cylinder"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:DRUM_CYLINDER"
  data_integrity_hash: "9e0545d9b8e07d96bdfa3495f5d2326a"
  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:DRUM_CYLINDER"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/drum-cylinder.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/drum-cylinder"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-3.0 m/s surface velocity, 50-2000 RPM rotational speed, 0.1-10.0 MPa radial load"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 3.5
    unit: "m"
    consequence: "Fatigue failure from cyclic bending stress (σ_max = 0.8σ_yield) due to unbalanced mass distribution, Hertzian contact stress exceeding material's endurance limit at bearing interfaces, thermal expansion mismatch (Δα = 12×10^-6 K^-1) causing interference fit loss"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Radial runout exceeding 0.05 mm due to manufacturing tolerance stack-up"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement dynamic balancing to ISO 1940 G2.5 standard with residual unbalance &lt; 1.0 g·mm/kg"
  - node_2:
      trigger: "Surface hardness reduction to below 45 HRC from abrasive particle contamination"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install magnetic filtration system with 10 μm particle capture efficiency &gt; 99.5%"
bom_nodes:
  cylinder-shell:
    type: "component"
    urn: "URN:CNFX:ME:CYLINDER_SHELL"
    interface_type: "physical-logic-coupled"
  end-plates:
    type: "component"
    urn: "URN:CNFX:ME:END_PLATES"
    interface_type: "physical-logic-coupled"
  mounting-flanges:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_FLANGES"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 1219-1:2012 (FLUID POWER SYSTEMS AND COMPONENTS)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/B93.5M-1985 (HYDRAULIC FLUID POWER - CYLINDERS)"
    scope: "Verified Engineering Specification"
  - standard: "DIN 24554:1981 (HYDRAULIC CYLINDERS; MOUNTING DIMENSIONS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/drum-cylinder.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "77774d52fb56aebf2f918c27ed185df57b520e68f0e13f475833e2ae0a11d2b4"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Drum Cylinder

## 1. Technical Definition
A cylindrical component that forms the main rotating body of a drum assembly, typically providing structural support and rotational motion.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-3.0 m/s surface velocity, 50-2000 RPM rotational speed, 0.1-10.0 MPa radial load**. Failure boundary: **Surface velocity exceeding 3.5 m/s causes hydrodynamic instability, radial load surpassing 12.0 MPa induces plastic deformation, rotational speed above 2500 RPM leads to centrifugal force exceeding yield strength**, Mechanism: **Fatigue failure from cyclic bending stress (σ_max = 0.8σ_yield) due to unbalanced mass distribution, Hertzian contact stress exceeding material's endurance limit at bearing interfaces, thermal expansion mismatch (Δα = 12×10^-6 K^-1) causing interference fit loss**.

### 2.1 Analytical Physics Model
Governed by the **Thin-Wall Pressure Vessel Stress Analysis**:

> **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$  
> **Engineering Impact**: Determines the hoop stress boundary to prevent rupture.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Internal Pressure | Engineering Constant |
| D | Diameter | Engineering Constant |
| t | Wall Thickness | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Radial runout exceeding 0.05 mm due to manufacturing tolerance stack-up | 8 | Vibration amplitude increase to 8.0 mm/s RMS causing bearing premature wear | Implement dynamic balancing to ISO 1940 G2.5 standard with residual unbalance &lt; 1.0 g·mm/kg |
| Surface hardness reduction to below 45 HRC from abrasive particle contamination | 8 | Wear rate acceleration to 0.1 mm/1000 hours causing dimensional tolerance loss | Install magnetic filtration system with 10 μm particle capture efficiency &gt; 99.5% |

## 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**: **Hydraulic Power Unit**, **Rotary Drive Motor**, **Bearing Support Structure**  
**Downstream Applications**: Industrial Mixers, Concrete Mixing Drums, Rotary Dryers  

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

### Q: What are the main applications of drum cylinders in machinery manufacturing?
**A**: Drum cylinders serve as the primary rotating body in drum assemblies across industries like mining, construction, and material handling, providing structural integrity and facilitating rotational motion for processes such as mixing, drying, or conveying.

### Q: How do carbon steel and stainless steel drum cylinders differ in performance?
**A**: Carbon steel drum cylinders offer high strength and cost-effectiveness for general industrial use, while stainless steel variants provide superior corrosion resistance, making them ideal for harsh environments, food processing, or chemical applications where hygiene and durability are critical.

### Q: What maintenance considerations are important for drum cylinder longevity?
**A**: Regular inspection for wear, proper lubrication of rotational interfaces, and monitoring of mounting flanges for secure alignment are essential. Material-specific care, such as corrosion prevention for carbon steel or cleaning protocols for stainless steel, also ensures optimal performance and lifespan.

## 6. Manufacturing Compliance
- ISO 1219-1:2012 (FLUID POWER SYSTEMS AND COMPONENTS)
- ANSI/B93.5M-1985 (HYDRAULIC FLUID POWER - CYLINDERS)
- DIN 24554:1981 (HYDRAULIC CYLINDERS; MOUNTING DIMENSIONS)

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

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: DRUM_CYLINDER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 5c884fdf
