---
title: "Rotor Disk"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:ROTOR_DISK"
  data_integrity_hash: "6e785031ca7c2b314fd2d8c9692846ec"
  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:ROTOR_DISK"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/rotor-disk.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/rotor-disk"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "300-650°C temperature, 150-400 m/s tangential velocity, 50-200 MPa centrifugal stress"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 700
    unit: "°C"
    consequence: "Low-cycle fatigue from thermal gradients exceeding 150°C/mm, creep deformation above 0.2% strain at 650°C, stress corrosion cracking in chloride environments above 60°C"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Thermal gradient exceeding 200°C across disk radius during startup"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Controlled startup ramp rate of 50°C/minute maximum, finite element analysis-optimized disk geometry with stress concentration factor below 1.8"
  - node_2:
      trigger: "Foreign object damage creating surface defect depth exceeding 0.5 mm"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Inlet particle separators with 99.9% efficiency for particles &gt;10 μm, shot peening surface treatment to induce 400 MPa compressive residual stress layer"
bom_nodes:
  blade-attachment-slots:
    type: "component"
    urn: "URN:CNFX:ME:BLADE_ATTACHMENT_SLOTS"
    interface_type: "physical-logic-coupled"
  bolt-holes:
    type: "component"
    urn: "URN:CNFX:ME:BOLT_HOLES"
    interface_type: "physical-logic-coupled"
  center-bore:
    type: "component"
    urn: "URN:CNFX:ME:CENTER_BORE"
    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: "DIN EN 10204:2004 (METALLIC PRODUCTS - TYPES OF INSPECTION DOCUMENTS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/rotor-disk.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "7ca185704fa82e78811043061de146a8e2b6fec9ca1df44ae3a430d53b3ecc41"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Rotor Disk

## 1. Technical Definition
A rotating disk that holds turbine blades and transmits mechanical energy in turbines and expanders.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **300-650°C temperature, 150-400 m/s tangential velocity, 50-200 MPa centrifugal stress**. Failure boundary: **Creep rupture at 700°C for 1000 hours, yield strength threshold at 250 MPa, critical crack length of 2.5 mm**, Mechanism: **Low-cycle fatigue from thermal gradients exceeding 150°C/mm, creep deformation above 0.2% strain at 650°C, stress corrosion cracking in chloride environments above 60°C**.

### 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 |
| :--- | :--- | :--- | :--- |
| Thermal gradient exceeding 200°C across disk radius during startup | 8 | Radial cracking initiating at blade attachment slots | Controlled startup ramp rate of 50°C/minute maximum, finite element analysis-optimized disk geometry with stress concentration factor below 1.8 |
| Foreign object damage creating surface defect depth exceeding 0.5 mm | 8 | Fatigue crack propagation from stress concentration at defect site | Inlet particle separators with 99.9% efficiency for particles &gt;10 μm, shot peening surface treatment to induce 400 MPa compressive residual stress layer |

## 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**: **Turbine Casing Assembly**, **Lubrication System**, **Control and Monitoring System**  
**Downstream Applications**: Gas Turbine Power Generation Units, Steam Turbine Power Plants, Turboexpander Systems  

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

### Q: What materials are commonly used for rotor disks in industrial turbines?
**A**: Rotor disks are typically manufactured from nickel-based superalloys, titanium alloys, or high-strength steel to withstand high temperatures, stresses, and rotational forces in turbines and expanders.

### Q: What are the key components of a rotor disk assembly?
**A**: A rotor disk assembly includes blade attachment slots for securing turbine blades, bolt holes for mounting and balancing, and a center bore for shaft connection and torque transmission.

### Q: How does a rotor disk function in energy transmission systems?
**A**: The rotor disk rotates at high speeds, holding turbine blades that convert fluid energy (steam, gas, or air) into mechanical energy, which is transmitted through the center bore to drive generators, compressors, or other machinery.

## 6. Manufacturing Compliance
- ISO 1940-1:2003 (BALANCE QUALITY REQUIREMENTS FOR ROTORS IN A CONSTANT RIGID STATE)
- DIN EN 10204:2004 (METALLIC PRODUCTS - TYPES OF INSPECTION DOCUMENTS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Rotor Disk](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/rotor-disk)**

### 🌐 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**: ROTOR_DISK | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 30901b0e
