Precision Sun Gears for Planetary Systems | Power Transmission
Our precision forged sun gears are central components in planetary gear systems, offering unmatched strength and accuracy for wind turbine gearboxes, industrial transmissions, and high-torque drivetrains.
What Are Sun Gears?
In a planetary gear system, the sun gear is the central gear around which the planetary gears rotate. It serves as the primary input or output component, transmitting torque and motion within the gear train. By engaging with multiple planet gears simultaneously, the sun gear enables high torque density, compact design, and smooth power distribution. Its precision and durability are critical for applications such as automotive transmissions, aerospace systems, and industrial machinery, where reliable performance under continuous load is essential.
Premium Core Components for Demanding Applications
Technical Specifications
1. Manufacturing Excellence
Material Options:
20CrMnTi – Automotive-grade alloy for general-purpose transmission gears
18CrNiMo7-6 – Heavy-duty steel for high-load applications
SCM415 – Precision industrial steel with balanced toughness and machinability
Heat Treatment:
Carburizing Depth: 0.8–1.2 mm
Surface Hardness: 58–62 HRC
Core Hardness: 30–40 HRC
Tooth Accuracy Standards:
DIN 3962: Class 4–6
AGMA 2000-D04: Class 12
2. Advanced Machining Capabilities
| Process | Equipment | Tolerance | Surface Finish |
|---|---|---|---|
| Hobbing | Liebherr L302 | ±0.015mm | Ra 1.6μm |
| Grinding | Kapp Niles ZP12 | ±0.005mm | Ra 0.4μm |
| Hard Turning | Index C200 | ±0.01mm | Ra 0.8μm |
Industry Applications
Automotive Transmissions
EV Reduction Gearboxes
Hybrid Vehicle Power-Split Devices
Dual-Clutch Transmission Modules
Energy & Heavy Machinery
Wind Turbine Yaw Drives
Mining Conveyor Systems
Oil Rig Top Drives
Industrial Automation
Robotics Rotary Joints
CNC Turntable Drives
Packaging Machinery
Quality Assurance Protocol
Material Verification
Spectrochemical Analysis (OES)
Ultrasonic Defect Detection
Process Control
SPC Statistical Monitoring
100% Tooth Profile CMM Inspection
Final Validation
Gleason 275TWG Rolling Test
Noise Testing <65dB @ 3000rpm
Why Choose Our Sun Gears?
✔ 30+ Years Expertise in planetary gear systems
✔ Complete In-House Production – From forging to final assembly
✔ Fast Turnaround – 25-day standard lead time
✔ Global Certifications – IATF 16949, ISO 14001
✔ Cost Efficiency – 20% lower vs. European counterparts
Technical Support Services
Gear System Optimization – FEA-based load analysis
Failure Mode Analysis – Wear pattern diagnostics
Lubrication Solutions – Custom grease formulations
Submit Your Requirements:
- Upload 2D/3D Drawings（PDF, DWG, DXF, STEP, IGES）.
- Specify Material & Quantity & Technical Requirements
- Receive free DFM feedback within 24h.
