---
title: "Winch Drum"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:WINCH_DRUM"
  data_integrity_hash: "76e715e2523159796a6f42af32ebfcb5"
  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:WINCH_DRUM"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/winch-drum.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/winch-drum"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-150 kN·m torque, 0-60 m/min line speed, -40°C to +120°C ambient temperature"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 355
    unit: "MPa"
    consequence: "Hertzian contact stress exceeding material yield strength under combined bending and torsional loading, following σ_max = √(σ_bending² + 3τ_torsion²) &gt; σ_yield"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Dynamic load factor exceeding 2.5 during emergency braking at 1.5 m/s² deceleration"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate load moment limiter with 85% yield stress cutoff and progressive braking algorithm"
  - node_2:
      trigger: "Corrosion pitting depth reaching 0.3 mm in chloride environments (ISO 9223 C4 category)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hot-dip galvanizing to 85 μm zinc coating with epoxy-polyurethane topcoat per ISO 12944-5"
bom_nodes:
  drum-barrel:
    type: "part"
    urn: "URN:CNFX:ME:DRUM_BARREL"
    interface_type: "physical-logic-coupled"
  flanges:
    type: "component"
    urn: "URN:CNFX:ME:FLANGES"
    interface_type: "physical-logic-coupled"
  shaft:
    type: "component"
    urn: "URN:CNFX:ME:SHAFT"
    interface_type: "physical-logic-coupled"
  grooves:
    type: "component"
    urn: "URN:CNFX:ME:GROOVES"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/winch-drum.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "b2d72cbf0779eb1545293ea5944ceaefb792d40d6db38f7688eb75f6b9b3d103"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Winch Drum

## 1. Technical Definition
The cylindrical component of a hoist winch around which the cable or rope is wound to lift or lower loads.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-150 kN·m torque, 0-60 m/min line speed, -40°C to +120°C ambient temperature**. Failure boundary: **Yield stress exceedance at 355 MPa (S355 steel) or 550 MPa (alloy steel), 0.8 mm permanent groove deformation, 1.5° angular misalignment**, Mechanism: **Hertzian contact stress exceeding material yield strength under combined bending and torsional loading, following σ_max = √(σ_bending² + 3τ_torsion²) &gt; σ_yield**.

### 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 |
| :--- | :--- | :--- | :--- |
| Dynamic load factor exceeding 2.5 during emergency braking at 1.5 m/s² deceleration | 8 | Plastic deformation of drum grooves causing cable jump-out and immediate load drop | Integrate load moment limiter with 85% yield stress cutoff and progressive braking algorithm |
| Corrosion pitting depth reaching 0.3 mm in chloride environments (ISO 9223 C4 category) | 8 | Stress concentration factor of 3.2 at pit locations initiating fatigue cracks per Paris' law da/dN = C(ΔK)^m | Hot-dip galvanizing to 85 μm zinc coating with epoxy-polyurethane topcoat per ISO 12944-5 |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Electric Motor or Hydraulic Power Unit**, **Gear Reduction System**, **Braking System**  
**Downstream Applications**: Marine Winches, Construction Cranes, Mining Hoists  

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

### Q: What materials are commonly used for winch drums in industrial applications?
**A**: Winch drums are typically manufactured from carbon steel, alloy steel, or cast iron, chosen based on load capacity, durability requirements, and environmental conditions.

### Q: What are the key components of a winch drum assembly?
**A**: A standard winch drum assembly includes the drum barrel (main cylindrical body), flanges (side plates to contain the cable), grooves (for proper cable winding), and the shaft (for mounting and rotation).

### Q: How does the winch drum affect lifting performance and safety?
**A**: The drum's diameter, groove design, and material strength directly influence cable life, load stability, and safe operation by ensuring proper spooling and minimizing wear during lifting/lowering cycles.

## 6. Manufacturing Compliance

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### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Winch Drum](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/winch-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**: WINCH_DRUM | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: aa23cd22
