Wind Turbine Main Shaft | Heavy Duty Forged Steel Spindle for Wind Power Generation
Product Description
As the critical link between the rotor hub and the gearbox, the Wind Turbine Main Shaft (Spindle) demands exceptional strength and fatigue resistance. Yile Machinery specializes in manufacturing Heavy Duty Forged Main Shafts for wind turbines ranging from 850KW to 5MW+ .
Engineered for the harsh conditions of onshore and offshore wind farms, our shafts are produced using advanced Open Die Forging processes. This ensures a refined grain structure and superior mechanical properties compared to cast alternatives, guaranteeing long-term reliability in continuous power generation operations.
Key Features & Technical Advantages
Premium Forged Quality: We utilize high-purity vacuum-degassed steel ingots. Through multi-directional forging, we eliminate internal porosity and ensure a high forging ratio (typically >3:1), resulting in maximum structural integrity.
High-Grade Alloy Materials: Manufactured from premium alloy steels such as 34CrNiMo6, 42CrMo4, or 18CrNiMo7-6, specifically selected for their high tensile strength and low-temperature impact toughness.
Precision Machining: Our heavy-duty CNC lathes and grinding centers ensure strict adherence to dimensional tolerances (ISO IT6) and surface finish requirements (Ra 0.8 or better) for perfect bearing fit.
Comprehensive Heat Treatment:
Quenching & Tempering (Q&T): To achieve the optimal balance of hardness and ductility.
Stress Relieving: To prevent deformation during operation.
Rigorous NDT Inspection: Every main shaft undergoes 100% Ultrasonic Testing (UT) according to EN 10228-3 Class 3/4 and Magnetic Particle Testing (MT) to ensure zero defects.
Technical Specifications
Specification |
Details |
Product Name |
Wind Turbine Main Shaft / Rotor Shaft / Generator Spindle |
Capacity Range |
850KW, 1.5MW, 2.0MW, 3.0MW, up to 5MW |
Material Standards |
EN, DIN, ASTM, GB (e.g., 34CrNiMo6, 42CrMo4) |
Max Dimensions |
Length: up to 8,000mm |
Manufacturing Process |
Open Die Forging -> Rough Machining -> Q&T -> Finish Machining |
Certification |
ISO 9001:2015, DNV/GL Material Standards |
Surface Protection |
Anti-rust oil coating + Vacuum packing for sea freight |
Applications
Onshore Wind Turbines: Main drive spindles for land-based wind farms.
Offshore Wind Power: High-corrosion-resistant shafts for marine environments.
Maintenance & Repair: Replacement shafts for gearbox retrofits or turbine overhauls.
Why Partner with Yile Machinery?
Custom Manufacturing: We produce strictly according to customer drawings and technical specifications.
Traceability: Full material traceability from raw ingot to finished product, with complete Quality Control (QC) reports provided.
Global Logistics: Experience in handling heavy-lift logistics to ensure your turbine shaft arrives safely at any port worldwide.
Get a Quote for Wind Turbine Shafts – Contact our engineering team for a technical review and pricing.