Forging the Core of Wind Power — Built for 3.6MW to 10MW+ Turbines
Get Your Custom Wind Turbine Main Shaft
Designed for Modern Wind Power Systems
Wind turbine main shafts are among the most critical load-bearing components in a wind power system. They operate under continuous cyclic loads, torque fluctuations, and harsh environmental conditions over a service life of 20–25 years.
Our 3.6MW+ Wind Turbine Main Shaft Forgings are specifically engineered to meet the demands of:
- Offshore wind power projects (corrosion + fatigue critical)
- Onshore wind turbines
- Next-generation 5MW / 10MW+ large turbines
We focus on delivering structural reliability, internal soundness, and long-term fatigue resistance, which are essential for reducing maintenance and lifecycle costs.
Core Advantages That Matter to Wind Power Buyers
Exceptional Fatigue Resistance for 20+ Year Service Life
Wind turbine shafts are subjected to millions of load cycles. We ensure fatigue resistance through: Controlled grain refinement during forging Optimized Quenching & Tempering (Q&T) Clean steel with minimal inclusions
High Internal Soundness
Using advanced open die forging, we achieve: Dense internal structure No shrinkage cavities Uniform grain flow This prevents internal crack initiation — a key risk in large shafts.
Low-Temperature Impact Toughness
For offshore wind applications, components must withstand harsh environments. We provide: Impact testing at -20°C / -40°C Stable toughness in cold climates Reliable performance in offshore conditions
Optimized for Offshore Conditions
Our shafts are specially treated for: Corrosion resistance Extreme fatigue conditions Long-term structural stability
Technical Specifications (Engineering Data)
Parameter | Specification |
Power Range | 2MW / 3.6MW / 5MW / 10MW+ |
Materials | 34CrNiMo6 / 42CrMo4 / 30CrNiMo8 |
Process | Open Die Forging |
Heat Treatment | Quenching & Tempering (Q&T) |
Max Weight | Up to 100 Tons |
Max Length | Up to 10+ meters |
Forging Ratio | ≥ 3.0 |
Ultrasonic Testing | 100% UT (EN 10228 / ASTM A388) |
Mechanical Testing | Tensile / Impact / Hardness |
Impact Test | -20°C / -40°C Available |
Manufacturing Process – Full Control from Ingot to Final Machining
Heavy Forging Capability – The Backbone of Large Shaft Production
16,500-Ton Hydraulic Forging Press
This is the key equipment that defines our capability.
With this press, we can:
- Produce ultra-large shaft forgings
- Achieve high forging ratios
- Ensure internal quality for critical components
Capacity Highlights:
- Max forging weight: 100 tons
- Shaft length: over 10 meters
- Suitable for offshore wind turbine main shafts
Quality Assurance & Testing Standards
We implement strict inspection procedures:
- 100% Ultrasonic Testing (UT)
- Magnetic Particle Testing (MT)
- Chemical composition analysis
- Mechanical property testing
Standards include:
- EN 10228
- ASTM A388
Factory Strength – Built for Heavy Forging Projects
Our facility integrates:
- Heavy forging workshop
- Heat treatment systems
- Precision machining centers
This allows us to deliver:
✔ Consistent quality
✔ Shorter lead times
✔ Full-process traceability
Project Experience
Frequently Asked Questions (FAQ)
Q1: What materials do you commonly use?
We primarily use 34CrNiMo6 and 42CrMo4, known for their high strength and excellent fatigue resistance, ideal for long-life wind turbine applications.
Q2: How do you ensure fatigue resistance?
Through strict control of grain size during forging and optimized Q&T heat treatment, ensuring a clean and uniform internal structure.
Q3: Can you produce shafts for 5MW or 10MW turbines?
Yes. Our 16,500-ton forging press allows us to manufacture shafts up to 100 tons and 10+ meters, suitable for offshore turbines.
Q4: What testing standards do you follow?
We perform 100% UT and MT testing, in compliance with EN 10228 and ASTM A388, along with full mechanical testing.
Q5: Do you offer finished machining?
Yes. We provide complete solutions, from forging to final CNC machining, delivering ready-to-install shafts.
Call to Action
Start Your Wind Turbine Shaft Project Today
Looking for a reliable heavy forging partner?
We provide:
- Custom main shaft solutions
- Full-process manufacturing
- Fast quotation & technical support