100–7000KG Alloy Steel Forging Shaft for Wind Turbine Main Drive. We manufacture high-strength alloy steel forged shafts ranging from 100KG to 7000KG, specifically designed for wind turbine main drive systems. These critical components feature excellent mechanical strength, fatigue resistance, and dimensional precision, ensuring stable and long-lasting performance in variable wind conditions and high-torque environments.
Material Options:
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42CrMo / 42CrMo4 – Tough alloy steel with excellent hardenability and impact strength
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18CrNiMo7-6 – Premium carburizing steel with deep case hardening and superior fatigue resistance
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20CrMnTi / 20CrMnMo – Ideal for high-load gear-driven systems requiring surface wear resistance and internal toughness
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Other grades available upon request (35CrMo, 42CrNiMo, etc.)
Key Features:
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Weight range: 100KG – 7000KG
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Length & diameter customized to drawing
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Available in solid, stepped, or hollow configurations
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Heat treated Normalizing and tempering for enhanced durability
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Forged with refined grain flow for improved strength and reliability
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Delivered in as-forged, rough machined, or CNC semi-finished state
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100% Ultrasonic Testing (UT), MPI, and mechanical inspection
Applications:
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Wind turbine main shaft
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Main gearbox input/output shafts
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Yaw and pitch drive components
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Coupling drive shafts for nacelle assemblies
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Item
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Details
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Product Name
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100–7000KG Alloy Steel Forging Shaft for Wind Turbine Main Drive
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Material Grades
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- Our primary alloy is 42CrMo4, a high-performance steel renowned for its exceptional strength, superior toughness, and outstanding resistance to wear. Specifically chosen for demanding applications, it excels in metallurgical equipment components facing heavy loads and significant stress.
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Forging Equipment
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- Hydraulic hammers: 5T / 8T / 12T- Large open-die forging press with core boring capability- Near-net shape forging for components with complex geometries
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Manufacturing Process
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Hot Forging → Intermediate Heat Treatment → Optional Core Boring / Drilling →Rough / Semi-Finish Machining → UT & Dimensional Inspection
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Forging Ratio
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≥ 3.0 — Promotes directional grain flow, ensuring excellent load-bearing capacity and fatigue resistance in metallurgical applications
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Applications
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- Components in steelmaking equipment: furnace shells, trunnions- Parts of continuous casting equipment: mold, vibration device- Elements of steel rolling equipment: mill housings, rolls- Components of metallurgical cranes: bridge, drum, hook
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Heat Treatment Options
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- Normalizing and tempering for enhanced mechanical properties- Stress relief treatment to ensure dimensional stability
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Testing & Inspection
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- Chemical: Spectrometer-controlled composition analysis- Mechanical: Hardness, tensile, yield, impact toughness- Ultrasonic (UT): Multi-angle flaw detection, including bore zone- Dimensional: Length, diameter, straightness, concentricity
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Value-Added Services
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- Tailored Geometries for Precise Integration: We offer custom-designed shapes to perfectly match the unique requirements of your specific metallurgical equipment. Components are also provided with pre-machined surfaces to facilitate seamless assembly into your existing systems. Furthermore, each part features laser marking for clear identification and complete traceability throughout its lifecycle.
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The steel forgings production flow:
Raw material steel ingot into warehouse(test the chemical composition) → Cutting→ Heating(Furnace temperature test) → Heat treatment after forging(Furnace temperature test) Discharge the furnace(blank inspection)→ Machining→ Inspection(UT,MT,Visal dimension, hardness)→ QT→ Inspection(UT, mechanical properties, hardness, grain size)→ Finish machining→ Inspection (dimension)→ Packing and Marking(steel stamp, mark)→ Storage Shipment.
Frequently Asked Questions (FAQs)
1. What is your forging weight capacity?
We specialize in producing custom-forged components ranging from 100 kg up to 7000 kg, depending on shape and material.
2. Do you offer heat treatment and machining?
Yes. We provide complete in-house services, including quenching & tempering, carburizing, and both rough and finish CNC machining, tailored to your technical requirements.
3. Which industries do you serve?
Our forged parts are widely used in wind power, heavy-duty industrial equipment, port lifting systems, gear transmission, mining, and oil & gas sectors.
4. What is your standard lead time?
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For stocked raw materials: approx. 30 days
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For new production orders: approx. 40–45 days, depending on size and complexity
5. Where is your factory located?
Our forging facility is based in Changzhou City, Jiangsu Province, strategically located near Shanghai Port for convenient domestic and international logistics.
Request a Quote
Looking for a tailored forging solution?
Please share your technical drawings, material specifications, and performance requirements with us.
Our engineering team will evaluate your request and provide a detailed quotation, along with technical suggestions to support your project’s success.
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