Changzhou Tiangong Forging Co., Ltd.
Changzhou Tiangong Forging Co., Ltd.
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42CrMo/40Cr Precision Forged Gear for Wind Power Gearbox and Construction Equipment.
Looking for high-performance forged gears for wind turbine gearboxes or industrial reducers? Our precision forged gears, manufactured from premium 42CrMo and 40Cr alloy steels, deliver exceptional strength, toughness, and long service life under extreme load and rotational stress conditions. With over 25 years of forging expertise, we supply top-quality transmission components for the renewable energy, port machinery, and heavy industrial sectors.
| Item | Details |
|---|---|
| Product Name | 42CrMo/40Cr Precision Forged Gear for Wind Power Gearbox and Construction Equipment |
| Material Grades | 42CrMo/40Cr |
| Forging Equipment | - Hydraulic Hammers: 5T, 8T, 12T - Supports large-section open die forging |
| Manufacturing Process | raw material inspection → unloading → inspection → preheating → forging → heat treatment → inspection → rough machining → non-destructive testing → inspection → packaging → delivery. |
| Forging Ratio | ≥ 3.0 — Ensures fine grain refinement, enhanced tensile strength, and excellent internal soundness for heavy-duty operation |
| Applications | Wind Power Gearbox and Construction Equipment |
| Delivery Conditions | - N+T (Normalized + Tempered): For pre-machined rough parts |
| Testing & Inspection | - Chemical Analysis: Optical Emission Spectrometry - Mechanical Tests: Tensile , Impact - NDT: UT , MT - Dimensional Control: Bore dial indicators, precision micrometers - Metallography: Grain size & microstructure |
High-Performance Forged Gears for Wind Energy Applications
Our forged gears are widely used in wind power gearbox systems, especially in high-load planetary and helical gear stages. 42CrMo4 and 40Cr alloy steels are selected for their superior mechanical performance after quenching and tempering treatment, offering:
High tensile and yield strength
Excellent impact toughness
Superior wear and fatigue resistance
Enhanced hardenability and stability
These properties make our gears particularly suitable for offshore and onshore wind turbines, where components must withstand fluctuating loads, temperature variations, and long-term vibration.
Key Features:
Material: Premium 4140 / 42CrMo4 alloy steel for optimal mechanical properties
Process: Free forging or die forging with strict metallurgical controls
Applications: Wind turbine gearboxes, port cranes, heavy-duty industrial transmissions
Heat Treatment: Normalizing, quenching, and tempering for maximum durability
Customization: Sizes and specifications tailored to your exact needs
Standards: ISO 9001, ISO 14001, ISO 45001 certified manufacturing process
Typical Applications:
Used as critical components in industrial gearboxes for:
Steel mills
Power plants
Cement equipment
Mining conveyors
Heavy-duty reducers and mechanical dr
Advantages:
Customized according to customer drawings or technical requirements
Optimized geometry for smooth torque transmission and minimal wear
Stable performance in high-load, high-vibration industrial environments
Competitive lead time and reliable after-sales support
Process flow:
raw material inspection → unloading → inspection → preheating → forging → heat treatment → inspection → rough machining → non-destructive testing → inspection → packaging → delivery.
Frequently Asked Questions (FAQs)
1. What is your forging weight range?
We produce forged parts ranging from 100 kg to 7000 kg.
2. Do you provide heat treatment and machining?
Yes, we offer full in-house heat treatment, rough, and finish machining services.
3. Which industries do you supply to?
We serve wind energy, heavy equipment, port machinery, transmission systems, and more.
4. What is your production lead time?
With stock: Around 30 days
Without stock: 40–45 days
5. Where is your factory located?
In Changzhou City, near Shanghai, with shipping via Shanghai Port.
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.