As a core intermediate component in the transmission chain, the second-stage
planetary gear blank plays a critical balancing role in torque transmission and speed increase. Compared to the first-stage planetary
gear blank, its dimensions and structure are more compact. Through optimized
heat treatment processes, rough machining operations, and a strict full-process traceability inspection system, we ensure this forging blank possesses excellent material homogeneity and structural integrity, laying a solid foundation for achieving outstanding contact fatigue strength and smooth operation after subsequent customer
Precision Machining into gears.
Our mature and stable heat treatment process route achieves the optimal balance between performance, efficiency, and cost. This route includes a complete full-process quality inspection system, ensuring the reliability and consistency of every planetary gear forging blank.
- Incoming Material Inspection
- Blank Cutting
- ring rolling
- Post-Forging Inspection
- Normalizing + Tempering
- Physical and Chemical Testing
- Rough Turning
- Comprehensive Inspection (Ultrasonic Testing, Hardness Testing, Spectroscopic Analysis, Phased Array UT of Bore)
- Marking, Cleaning, Packaging, and Storage
Product Specifications and Manufacturing Capacity
Net weight range: 100 kg – 6 tons;
Inner Diameter: less than 500mm
Outer Diameter: less than 1000mm
Material properties: Heat-treated alloy steel (e.g.18CrNiMo7-6) offering both toughness and durability.
Core Value of the Process
- Balanced Performance: The Normalizing + Tempering heat treatment effectively refines the grain structure, homogenizes the microstructure, and relieves internal stresses, giving the product excellent comprehensive mechanical properties.
- Reliable Quality: Ultrasonic testing and hardness testing conducted before and after rough turning provide dual assurance, guaranteeing superior quality from the interior to the surface of the product.
- Efficient Delivery: The compact and rational process flow effectively controls costs for you and ensures a stable delivery cycle.
This product is specifically designed for the intermediate stage of wind turbine gearboxes and transmission systems of large engineering machinery, providing customers with high-quality foundational material for gear manufacturing.
Applications:
- Intermediate stage of wind turbine gearboxes
- Transmissions for large engineering machinery
Our second‑stage planetary gear blanks provide the reliable foundation needed for high‑performance wind‑turbine gearboxes and large engineering machinery. To complete your transmission solution, explore our
Machined Rings product line, which offers expertly machined intermediate rings designed for superior torque transmission, durability, and cost‑effective delivery.
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