Machined Alloy Steel Sun Shaft Forging

Sun Shaft: The Core Power Output Shaft of Wind Turbine Gearboxes

The sun shaft is a critical transmission component in wind turbine generator systems — a high-speed rotating power shaft responsible for torque transmission, centering, and supporting complex loads. Our precision-machined sun shafts are made from high-quality 18CrNiMo7-6 alloy steel, produced through a complete and controlled process chain that enhances torsional and fatigue resistance. Designed to meet the high-load requirements of medium and large-scale power generation equipment, they deliver exceptional strength, accuracy, and reliability.

Manufacturing Process

Materials:

• Comprehensive Quality Control: Over 20 tightly controlled procedures from raw material to finished product.
• Precise Heat Treatment: Quenching and tempering ensure optimal core toughness and strength for high-speed, heavy-duty operation.
• Integrated Testing System: Ultrasonic flaw detection, hardness testing, and residual magnetism inspection ensure consistent quality.

• Wind Power: Main gearbox of wind turbine generator systems
• Mining Equipment: Drive systems for large-scale crushing machinery
• Heavy Machinery: Slewing mechanisms in heavy Construction Equipment
• Marine & Offshore: Reduction gears in ship propulsion systems
• Other Applications: Power transmission systems of high-speed compressors and large pump drive mechanisms