---
title: "Rotor/Brake Disc"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:ROTORBRAKE_DISC"
  data_integrity_hash: "3f097cbd3c561d670723f002c7d8cefd"
  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:ROTORBRAKE_DISC"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/rotorbrake-disc.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/rotorbrake-disc"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-1500 RPM rotational speed, 0-2.5 mm axial clearance, 20-200°C operating temperature"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 350
    unit: "MPa"
    consequence: "Electromagnetic hysteresis heating exceeding material thermal capacity, eddy current induced thermal stress concentration at mounting holes, Lorentz force induced mechanical fatigue at rotor-stator interface"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Excessive eddy current density exceeding 15 A/mm²"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Segmented rotor design with insulated laminations, silicon steel alloy with 0.35 mm thickness, surface oxide coating with 50 μm thickness"
  - node_2:
      trigger: "Resonant vibration at 1200-1400 RPM matching 85 Hz natural frequency"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Dynamic balancing to ISO 1940 G2.5 standard, finite element analysis optimized rib geometry, 4140 steel heat treated to 40 HRC hardness"
bom_nodes:
  friction-surface:
    type: "component"
    urn: "URN:CNFX:ME:FRICTION_SURFACE"
    interface_type: "physical-logic-coupled"
  mounting-hub:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_HUB"
    interface_type: "physical-logic-coupled"
  cooling-finsvanes:
    type: "component"
    urn: "URN:CNFX:ME:COOLING_FINSVANES"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 26262:2018 - ROAD VEHICLES - FUNCTIONAL SAFETY"
    scope: "Verified Engineering Specification"
  - standard: "ASTM A536-84(2019) - STANDARD SPECIFICATION FOR DUCTILE IRON CASTINGS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/rotorbrake-disc.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "06275f167fc1c17e9358c457de46eab87aeec29dda89acdfb7f414c4b8cf3801"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Rotor/Brake Disc

## 1. Technical Definition
The rotating component of an electromagnetic brake assembly that interacts with the stator to generate braking torque through electromagnetic forces.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-1500 RPM rotational speed, 0-2.5 mm axial clearance, 20-200°C operating temperature**. Failure boundary: **Material yield strength exceeded at 350 MPa stress, 250°C Curie temperature reached, 3.0 mm axial deflection limit exceeded**, Mechanism: **Electromagnetic hysteresis heating exceeding material thermal capacity, eddy current induced thermal stress concentration at mounting holes, Lorentz force induced mechanical fatigue at rotor-stator interface**.

### 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 |
| :--- | :--- | :--- | :--- |
| Excessive eddy current density exceeding 15 A/mm² | 8 | Localized thermal runaway reaching 400°C at rotor surface | Segmented rotor design with insulated laminations, silicon steel alloy with 0.35 mm thickness, surface oxide coating with 50 μm thickness |
| Resonant vibration at 1200-1400 RPM matching 85 Hz natural frequency | 8 | Fatigue crack propagation from mounting bolt holes | Dynamic balancing to ISO 1940 G2.5 standard, finite element analysis optimized rib geometry, 4140 steel heat treated to 40 HRC hardness |

## 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**: **CNC Lathe**, **Heat Treatment Furnace**, **Surface Grinding Machine**  
**Downstream Applications**: Industrial Brake Systems, Elevator Safety Brakes, Wind Turbine Pitch Control Systems  

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

### Q: What materials are best for electromagnetic brake rotors in heavy machinery?
**A**: High-carbon steel and sintered metal alloys are preferred for their durability, heat resistance, and ability to maintain consistent friction under high torque conditions in industrial applications.

### Q: How does the cooling fin design affect brake rotor performance?
**A**: Cooling fins or vanes dissipate heat generated during braking, preventing overheating and thermal fade, which ensures consistent torque and extends the rotor's service life in continuous operation.

### Q: What maintenance is required for electromagnetic brake rotors?
**A**: Regular inspection for wear on the friction surface, checking mounting hub alignment, and ensuring clean, debris-free operation to maintain optimal electromagnetic force and braking efficiency.

## 6. Manufacturing Compliance
- ISO 26262:2018 - ROAD VEHICLES - FUNCTIONAL SAFETY
- ASTM A536-84(2019) - STANDARD SPECIFICATION FOR DUCTILE IRON CASTINGS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Rotor/Brake Disc](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/rotorbrake-disc)**

### 🌐 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**: ROTORBRAKE_DISC | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: d2e33835
