---
title: "Planet Carrier"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:PLANET_CARRIER"
  data_integrity_hash: "dd6a5a43a68877b87ddbd319ee793d7e"
  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:PLANET_CARRIER"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/planet-carrier.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/planet-carrier"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-15000 RPM rotational speed, -40°C to 150°C temperature range, 50-500 N·m torque transmission"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 550
    unit: "MPa"
    consequence: "High-cycle fatigue from cyclic bending moments during power transmission, fretting wear at gear-shaft interfaces due to micro-motion under load, stress concentration at bolt holes exceeding material endurance limit"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Insufficient lubrication film thickness &lt;1 μm at gear meshing interfaces"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement forced lubrication system with 0.2 MPa minimum pressure and 5 μm filtration"
  - node_2:
      trigger: "Resonant vibration at 2× mesh frequency (typically 500-5000 Hz) due to mass imbalance"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Dynamic balancing to &lt;0.5 g·mm residual unbalance and tuned mass damper installation"
bom_nodes:
  carrier-body:
    type: "component"
    urn: "URN:CNFX:ME:CARRIER_BODY"
    interface_type: "physical-logic-coupled"
  planet-gear-pinsshafts:
    type: "component"
    urn: "URN:CNFX:ME:PLANET_GEAR_PINSSHAFTS"
    interface_type: "physical-logic-coupled"
  mounting-flange:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_FLANGE"
    interface_type: "physical-logic-coupled"
  bearing-surfaces:
    type: "component"
    urn: "URN:CNFX:ME:BEARING_SURFACES"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 1328-1:2013 (CYLINDRICAL GEARS - ISO SYSTEM OF FLANK TOLERANCE CLASSIFICATION)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/AGMA 2000-A88 (GEAR CLASSIFICATION AND INSPECTION HANDBOOK)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/planet-carrier.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "d3ea907fb8d5c31aaacc1a3183ac6def6ae2fe5b5bb3c8b47890e82e51bcfd38"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Planet Carrier

## 1. Technical Definition
A structural component in planetary gear systems that holds and supports the planet gears, allowing them to rotate around the sun gear while maintaining proper alignment and spacing.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-15000 RPM rotational speed, -40°C to 150°C temperature range, 50-500 N·m torque transmission**. Failure boundary: **Material yield strength exceeded at 550 MPa von Mises stress, fatigue failure at 10^7 cycles under 300 MPa alternating stress, critical misalignment &gt;0.1 mm radial runout**, Mechanism: **High-cycle fatigue from cyclic bending moments during power transmission, fretting wear at gear-shaft interfaces due to micro-motion under load, stress concentration at bolt holes exceeding material endurance limit**.

### 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 |
| :--- | :--- | :--- | :--- |
| Insufficient lubrication film thickness &lt;1 μm at gear meshing interfaces | 8 | Accelerated adhesive wear leading to gear tooth profile deviation &gt;0.05 mm | Implement forced lubrication system with 0.2 MPa minimum pressure and 5 μm filtration |
| Resonant vibration at 2× mesh frequency (typically 500-5000 Hz) due to mass imbalance | 8 | Bearing raceway spalling from cyclic impact loading exceeding 2 GPa Hertzian contact stress | Dynamic balancing to &lt;0.5 g·mm residual unbalance and tuned mass damper installation |

## 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 Machining Center**, **Coordinate Measuring Machine (CMM)**, **Industrial Heat Treatment Furnace**  
**Downstream Applications**: Wind Turbine Gearboxes, Automotive Transmissions, Industrial Robotics Drives  

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

### Q: What materials are best for planet carriers in high-torque applications?
**A**: For high-torque applications in machinery manufacturing, forged steel or alloy steel planet carriers are recommended due to their superior strength, fatigue resistance, and ability to withstand heavy loads and stress.

### Q: How does the planet carrier affect gear system performance?
**A**: The planet carrier is critical for performance as it holds and supports the planet gears, maintaining precise alignment and spacing. A well-designed carrier ensures smooth rotation, reduces vibration, minimizes wear, and maximizes power transmission efficiency in the planetary gear system.

### Q: What maintenance is required for planet carriers?
**A**: Regular inspection for cracks, wear on bearing surfaces, and proper lubrication of planet gear pins/shafts is essential. Maintenance intervals depend on operational load and environment, but typically align with overall gearbox service schedules to prevent failure and ensure longevity.

## 6. Manufacturing Compliance
- ISO 1328-1:2013 (CYLINDRICAL GEARS - ISO SYSTEM OF FLANK TOLERANCE CLASSIFICATION)
- ANSI/AGMA 2000-A88 (GEAR CLASSIFICATION AND INSPECTION HANDBOOK)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Planet Carrier](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/planet-carrier)**

### 🌐 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**: PLANET_CARRIER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 8b2d8169
