Industry-Verified Manufacturing Data (2026)

Planet Carrier

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Planet Carrier used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Planet Carrier is characterized by the integration of Carrier Body and Planet Gear Pins/Shafts. In industrial production environments, manufacturers listed on CNFX commonly emphasize Alloy Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

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.

Product Specifications

Technical details and manufacturing context for Planet Carrier

Definition
The planet carrier is a critical component within reduction gears, specifically in planetary gear arrangements. It serves as the mounting structure for the planet gears (also called planetary gears), which are the intermediate gears that mesh with both the central sun gear and the outer ring gear. The carrier rotates around the sun gear, transmitting torque and motion between the input and output shafts while providing mechanical advantage through gear reduction. Its design ensures precise positioning of the planet gears to maintain proper gear meshing and load distribution throughout the gear system.
Working Principle
The planet carrier rotates as a unit, carrying the planet gears with it. As the sun gear (input) rotates, it drives the planet gears, which in turn rotate on their own axes while being constrained by the stationary or rotating ring gear. The carrier's rotation (output) results from the combined motion of the planet gears, achieving speed reduction or torque multiplication depending on the configuration. The carrier must withstand significant radial and axial loads while maintaining rigidity to prevent gear misalignment.
Common Materials
Alloy Steel, Cast Iron, Forged Steel
Technical Parameters
  • Bore diameter for mounting on shaft (mm) Standard Spec
Components / BOM
  • Carrier Body
    Main structural frame that holds all components together and transmits torque
    Material: Alloy Steel
  • Planet Gear Pins/Shafts
    Axles on which planet gears rotate, mounted to the carrier body
    Material: Case-Hardened Steel
  • Mounting Flange
    Interface for connecting to input/output shafts or other components
    Material: Alloy Steel
  • Bearing Surfaces
    Precision-machined surfaces for supporting bearings that reduce friction on planet gear pins
    Material: Hardened Steel
Engineering Reasoning
0-15000 RPM rotational speed, -40°C to 150°C temperature range, 50-500 N·m torque transmission
Material yield strength exceeded at 550 MPa von Mises stress, fatigue failure at 10^7 cycles under 300 MPa alternating stress, critical misalignment >0.1 mm radial runout
Design Rationale: 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
Risk Mitigation (FMEA)
Trigger Insufficient lubrication film thickness <1 μm at gear meshing interfaces
Mode: Accelerated adhesive wear leading to gear tooth profile deviation >0.05 mm
Strategy: Implement forced lubrication system with 0.2 MPa minimum pressure and 5 μm filtration
Trigger Resonant vibration at 2× mesh frequency (typically 500-5000 Hz) due to mass imbalance
Mode: Bearing raceway spalling from cyclic impact loading exceeding 2 GPa Hertzian contact stress
Strategy: Dynamic balancing to <0.5 g·mm residual unbalance and tuned mass damper installation

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Planet Carrier.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 500 MPa (static load capacity)
other spec: Max rotational speed: 10,000 RPM, Lubrication required: ISO VG 68-320
temperature: -40°C to 150°C (operational), up to 200°C (peak)
Media Compatibility
✓ Industrial gear oil (mineral/synthetic) ✓ Grease-lubricated systems ✓ Clean, filtered hydraulic fluid
Unsuitable: Abrasive slurry or particulate-laden environments without filtration
Sizing Data Required
  • Number of planet gears and gear module (pitch)
  • Input torque and rotational speed requirements
  • Housing bore diameter and mounting constraints

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Bearing fatigue and spalling
Cause: Cyclic loading from planetary gear operation exceeding bearing material fatigue limits, often exacerbated by inadequate lubrication or contamination
Gear tooth pitting and wear
Cause: Surface fatigue due to high contact stresses between planet gears and sun/ring gears, accelerated by misalignment, improper backlash, or lubricant breakdown
Maintenance Indicators
  • Abnormal metallic grinding or whining noise during operation indicating gear mesh issues or bearing degradation
  • Visible metal particles in lubricant or excessive vibration detected during routine monitoring
Engineering Tips
  • Implement precision alignment during installation and maintain proper gear backlash specifications to minimize uneven loading
  • Establish rigorous lubrication management including correct viscosity selection, contamination control, and regular oil analysis to detect early wear patterns

Compliance & Manufacturing Standards

Reference Standards
ISO 1328-1:2013 (Cylindrical gears - ISO system of flank tolerance classification) ANSI/AGMA 2000-A88 (Gear Classification and Inspection Handbook) DIN 3961 (Tolerances for cylindrical gear teeth)
Manufacturing Precision
  • Bore diameter: +/-0.02mm
  • Planet pin hole position tolerance: 0.05mm
Quality Inspection
  • Dimensional inspection with CMM (Coordinate Measuring Machine)
  • Hardness testing (Rockwell or Brinell scale)

Factories Producing Planet Carrier

Verified manufacturers with capability to produce this product in China

✓ 97% Supplier Capability Match Found

T Technical Director from Canada Jan 02, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
P Project Engineer from United States Dec 30, 2025
★★★★☆
"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Planet Carrier meets all ISO standards. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
S Sourcing Manager from United Arab Emirates Dec 27, 2025
★★★★★
"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Planet Carrier arrived with full certification."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

6 sourcing managers are analyzing this specification now. Last inquiry for Planet Carrier from Mexico (1h ago).

Supply Chain Compatible Machinery & Devices

Heavy-Duty CNC Plasma Cutting Machine

Industrial machine for precision metal cutting using plasma arc technology

Explore Specs →
Automated Assembly Line System

Integrated production system for sequential component assembly operations

Explore Specs →
Automated Powder Coating System

Integrated industrial system for applying dry powder coatings to metal substrates.

Explore Specs →
Centrifugal Pump Impeller

Rotating component that transfers energy to fluid in centrifugal pumps.

Explore Specs →

Frequently Asked Questions

What materials are best for planet carriers in high-torque applications?

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.

How does the planet carrier affect gear system performance?

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.

What maintenance is required for planet carriers?

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.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Get Quote for Planet Carrier

Request technical pricing, lead times, or customized specifications for Planet Carrier directly from verified manufacturing units.

Your business information is encrypted and only shared with verified Planet Carrier suppliers.

Thank you! Your message has been sent. We'll respond within 1–3 business days.
Thank you! Your message has been sent. We'll respond within 1–3 business days.

Need to Manufacture Planet Carrier?

Connect with verified factories specializing in this product category

Add Your Factory Contact Us
Previous Product
Plan Traversal Module
Next Product
Planetary Gear Reducer