First-Stage Sun Gear Blank

• High-Strength Forged Construction: Near-net shape Forging and Ring Rolling deliver optimal grain flow and structural integrity.

• Advanced Heat Treatment: Quenching & tempering or normalizing + tempering improves core hardness, ductility, and load-bearing capacity.

• Carburizing-Ready Material: Ideal substrate for deep carburizing and case hardening, ensuring superior surface wear resistance and long fatigue life.

• Heavy-Duty Gear Design: Engineered specifically for the first-stage planetary system, handling extreme torque and impact loads.

• Industrial Reliability: Suitable for utility-scale wind turbines, gearboxes, and heavy industrial power transmission systems.

1.Incoming Material Inspection

2.Blank Cutting

3.Ring Rolling

4.Post-Forging Visual & Dimensional Inspection

5.Heat Treatment: Quenching & Tempering / Normalizing + Tempering

6.Mechanical, Chemical & Metallurgical Testing

7.Machining of NDT Surfaces

8.UT & NDT Inspection

9.Rough Turning

10.Ultrasonic Testing, Spectroscopic Analysis, Hardness Measurement

11.Semi-Finish Turning

12.Dimensional Accuracy Inspection

13.Final Hardness Testing

14.Marking, Cleaning & Packaging

• Material: Alloy Steel (18CrNiMo7-6 or customized)

• Condition: Forged, heat-treated, semi-machined

• Typical Dimensions: Approx. Φ1701 mm × 468 mm (custom sizes available)

• Core Value: Delivers maximum torque capacity, stable performance, and extended service life under high-load wind energy conditions

Engineered from 18CrNiMo7-6 alloy steel and available in large diameters up to 5 meters, our forged and heat-treated sun gears are ideal for:

• Wind turbine gearboxes (first-stage and second-stage sun gears)

• Heavy-duty planetary gear systems for industrial reducers

• Energy and power generation equipment

• Mining and metallurgical machinery

• Marine and offshore mechanical drives

• Large-scale Industrial Machinery requiring high-strength forged gears