Changzhou Tiangong Forging Co., Ltd.
Changzhou Tiangong Forging Co., Ltd.
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Heat Treated Forged Gearbox Gear for Offshore and Onshore Wind Power Gearbox.
Engineered for the demanding torque and fatigue conditions of modern wind power systems, this heat-treated forged gear delivers exceptional structural performance, long-term durability, and dimensional precision. Designed for both offshore and onshore wind turbine gearbox environments, each gear undergoes controlled thermal processes to optimize core strength and surface hardness.
Crafted from high-performance alloy steels such as 18CrNiMo7-6 and 42CrMo4, the forging process is followed by advanced heat treatment—such as quenching and tempering or carburizing—to ensure the ideal balance between toughness and wear resistance. This enables the gear to endure high-load operating cycles while minimizing deformation and tooth surface fatigue.
| Item | Details |
|---|---|
| Product Name | Heat Treated Forged Gearbox Gear for Offshore and Onshore Wind Power Gearbox |
| Material Grades | - Alloy Steels: 18CrNiMo7-6, 42CrMo4, other customized grades for wind power drivetrain |
| Forging Equipment | - Hydraulic Hammers: 5T, 8T, 12T - Capable of open die forging for large-diameter gears - Max outer diameter: 3200 mm - Max single-piece weight: 12 tons |
| Manufacturing Process | Forging → Heat Treatment → Rough Machining → Gear Hobbing/Shaping → Gear Grinding (optional) → Finish Machining → NDT & Dimensional Inspection |
| Forging Ratio | ≥ 3.0 — Enhances internal soundness, grain structure, and long-term performance in wind turbine gearbox applications |
| Heat Treatment Options | - Normalized + Tempered for core strength |
| Applications | - Main transmission gears in wind turbine gearboxes - Pitch and yaw drive gears for both onshore and offshore turbines - Large module gear systems operating under fluctuating loads and extreme environments |
| Process Compliance | Manufactured per customer technical drawings and application-specific engineering requirements |
| Delivery Conditions | - Heat treated and rough or fully machined as required - Surface-hardened options for extended wear resistance in mission-critical drive systems |
| Testing & Inspection | - Chemical Composition Analysis - Mechanical Testing: Tensile Strength, Impact Toughness, Hardness - Non-Destructive Testing: UT, MT |
Advanced Heat Treatment
Quenched and tempered or case-hardened to ensure a tough core with a high-hardness wear-resistant surface, ideal for high-torque wind applications.
High Strength Forged Alloy Steel
Manufactured from 18CrNiMo7-6, 42CrMo4, or equivalent grades to guarantee fatigue resistance and dimensional stability under fluctuating loads.
Large Module Gear Capability
Designed to support slow-speed, high-load transmission with optimized gear tooth geometry and precision hobbing or shaping.
Optimized for Harsh Environments
Suitable for corrosion-resistant finishes and gear coating solutions, enabling stable performance in coastal, marine, and desert wind farms.
Full Traceability & Quality Control
Each gear is produced under certified standards, with full heat treatment reports, NDT results, and dimensional data provided.
Offshore Wind Turbine Gearboxes
Main transmission, yaw drive, and pitch adjustment gears for offshore wind farms with harsh ambient conditions.
Onshore Utility-Scale Wind Gear Systems
Large-scale wind farm drive systems requiring long life cycles and minimal maintenance.
High-Load Wind Power Drivetrain Components
Designed for integration into 3MW+ and next-generation multi-megawatt turbine platforms.
Custom Gear Solutions for Renewable Energy OEMs
Tailored forged gear components for wind power equipment manufacturers seeking reliable, high-performance solutions.
Process flow:
raw material inspection → unloading → inspection → preheating → forging → heat treatment → inspection → rough machining → non-destructive testing → inspection → packaging → delivery.
Frequently Asked Questions (FAQs)
What is your forging capacity in terms of weight?
We manufacture forged components with unit weights ranging from 100 kg up to 7000 kg.
Do you offer heat treatment and machining services?
Yes. We provide complete in-house heat treatment, as well as both rough and precision machining based on your requirements.
Which industries do you typically serve?
Our forged products are widely used in wind power, heavy industrial machinery, port handling equipment, and gearbox transmission systems, among others.
What are your standard production lead times?
In stock: Approximately 30 days
Made to order: Typically 40 to 45 days, depending on complexity and volume
Where is your manufacturing facility located?
We are based in Changzhou City, close to Shanghai. Shipments are typically handled through Shanghai Port for convenient global logistics.
Request a Quote
Please send your technical drawings and requirements to us. Our engineers will review and provide you with a professional quotation and solution shortly.