planetary gear｜Core Components for Wind Turbine Transmission Systems
The planetary gear revolves around the central sun gear while simultaneously rotating on its own axis. Through its meshing with the outer ring gear, it enables the transmission of power and motion. Its purpose is to take the low-speed, high-torque rotational power captured by the wind rotor blades and, via one or multiple stages of planetary gear systems, increase the speed to the generator's required rated speed, thereby efficiently driving the generator to produce electricity.
During operation, the planetary gear rotates around its own axis while orbiting the central sun gear, transmitting torque through meshing with the ring gear. In wind turbine gearboxes, multiple stages of planetary gears convert the low-speed, high-torque rotation of the rotor into high-speed output suitable for driving the generator.
The products we supply are precision-
Forged Blanks without machined teeth, allowing our customers to perform final gear cutting, grinding, and surface finishing according to their own technical standards.
- Incoming Material Inspection
- Blank Cutting
- ring rolling
- Post-forging inspection
- heat treatment (normalizing + tempering, quenching & tempering)
- Heat treatment inspection
- Metallurgical & mechanical testing
- Facing for NDT
- Inspection (UT, spectrometer analysis)
- Rough turning after Q&T
- Inspection (hardness test, demagnetization)
- Marking, cleaning & packing into storage
Product Specifications & Manufacturing Capability
- Net Weight Range: 100 kg – 6 tons
- Diameter: ≥100 mm
- Supply condition Forged blank / semi-finished (teeth not machined)
- Material Properties: Heat-treated alloy steel (e.g.18CrNiMo7-6), combining toughness and durability
Applications
Our
planetary gear Forgings are engineered for high-load, high-torque transmission systems where durability and strength are critical. With a weight range of
100 kg to 6 tons, they are suitable for a wide variety of heavy-duty applications across multiple industries.
⚙️ Wind Power Industry
Used in multi-stage wind turbine gearboxes, these forgings transmit torque efficiently from the rotor hub to the generator. Their high strength and toughness ensure reliable performance under cyclic wind loads and harsh offshore conditions.
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Mining & Construction Machinery Applied in the travel and slewing drives of large excavators, mining trucks, and crushing equipment. The planetary gear system enables compact design and efficient power transmission for heavy-duty operations.
Our precision‑forged planetary gear blanks provide a reliable foundation for high‑torque wind‑turbine gearboxes and heavy‑duty machinery. To complete your drivetrain, consider our
Alloy Steel First-Stage Planet Pin Shafts, which deliver superior strength, durability, and dimensional accuracy for optimal performance.
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