Custom Open Die Forged Flange 42CrMo / C45 / 20CrMnMo – Heavy Duty 100kg to 7000kg
High-strength forged flanges manufactured from premium-grade alloy and carbon steels, including 42CrMo, 42CrNiMo, 18CrNiMo7-6, C45, and 20CrMnMo. Available in sizes ranging from 100kg to 7000kg, our flanges are ideal for wind power, port machinery, heavy-duty equipment, and transmission systems.
Key Features:
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Material: 42CrMo, 42CrNiMo, 18CrNiMo7-6, 20CrMnMo, C45, C35
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Forging Type: Open die / Closed die
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Weight Range: 100kg – 7000kg
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Heat Treatment: Normalizing, Quenching + Tempering
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Machining: Rough / Semi-finished / Precision CNC
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Standards: Custom / GB / DIN / ANSI
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Applications: Wind turbines, port cranes, gearboxes, engineering machinery
| Material | 4140,4130,18CrNiMo7-6,4340,4330,1.7225,35#
45#
20CrMnTi
20CrNi2Mo
20CrMnMo
18CrNiMo7-6
42CrMo
20CrNo
35CrMo |
| | 5 TON, 8 TON, 12 TON Hydralic hammer |
| Apply for | Transmission main shaft is used for driving force |
| | Forging+heat treatment+rough machining+finish machining |
| Forging ratio | ≥3 |
| Applicable standard | ASTM,ASME,DIN,JIS,ISO,BS,API,EN |
| Executive standard | JB/GB/EN/DIN/JIS/ASME/ASTM/ISO |
| Delivery terms | Rough machining(N+T); finish machining(Q+T) |
| Test equipment | Spectrograph, UT device, tensile and impact test machine, metalloscope,external micrometer, bore dial indicator, hardness testing device and so on. |
| Service | Our service included the forging, process, heat treatment, finish machining, package, local logistics, customers clearance and maritime transport. We took the customer’s requirements as the principal thing, and pay attention on the products quality. |
Custom 42CrMo / 42CrNiMo / 18CrNiMo Forged Shafts, drives for Wind Turbine Gearboxes (100–1000KG). We manufacture custom forged shafts and drive components made from premium alloy steels including 42CrMo, 42CrNiMo, and 18CrNiMo, specifically engineered for wind turbine gearbox applications. These forged parts range from 100KG to 1000KG, and can be tailored to meet your exact design and performance requirements.
Material Options:
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42CrMo – A high-strength alloy steel with excellent toughness and hardenability, widely used for heavy-duty drive shafts.
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42CrNiMo – A nickel-molybdenum alloy steel offering superior impact resistance and stability in harsh, low-temperature environments.
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18CrNiMo – A carburizing alloy steel combining high surface wear resistance with strong core toughness, ideal for long-life gear shafts.
Key Features:
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Weight range: 100–1000KG
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Available in various shapes: stepped shafts, spline shafts, solid or hollow structures
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Forged and heat-treated for enhanced mechanical properties
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CNC pre-machining or rough machining available upon request
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100% Ultrasonic testing and Magnetic Particle Inspection
Applications:
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Main shafts and input/output shafts in wind turbine gearboxes
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High-torque drive components in renewable energy systems
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Custom transmission shafts for planetary and parallel gear reducers
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Offshore and onshore wind power equipment
Manufacturing Process:
The shafts are produced using open die forging or precision closed die forging, followed by appropriate heat treatment such as quenching & tempering or carburizing. Each part is processed to achieve optimized grain flow and superior fatigue resistance. All products are strictly inspected and can be delivered with pre-machined surfaces to facilitate your final assembly or finish machining.
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.
Why Choose Our Forged Steel Shafts?
✅ 25+ Years of Forging Expertise
✅ In-house Quality Control & Testing Lab
✅ ISO9001 / ISO14001 / ISO45001 Certified
✅ Reliable Partner of Top Gearbox Brands (Goldwind, NGC, ZPMC, etc.)
✅ Customized Dimensions & Tolerances Based on Drawings
Typical Features of Our Wind Turbine Shafts
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High torsional strength & fatigue life
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Optimized grain flow via precision forging
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Crack-free forging surfaces
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Enhanced mechanical reliability under extreme loads
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Full traceability and quality documentation (MTC available)
Frequently Asked Questions (FAQs)
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What is the typical weight spectrum of the forged components you manufacture? Our forging capabilities encompass a range of components weighing from 100 kilograms up to 7 metric tons.
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Do you handle downstream processing such as thermal treatment and material removal? Indeed, we provide comprehensive in-house services for heat treatment, encompassing both preliminary and final machining operations.
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Which industrial sectors are the primary beneficiaries of your forged products? We cater to a diverse array of critical industries, including wind power generation, heavy machinery manufacturing, port infrastructure, power transmission systems, and various others.
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What are the typical timeframes for the completion and dispatch of orders? For items readily available in our inventory, the standard lead time is approximately 30 days. For custom-manufactured orders, the timeframe generally spans 40 to 45 days.
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Could you provide information on the geographical location of your manufacturing facility and shipping hub? Our production plant is situated in Changzhou City, strategically located near Shanghai, and we utilize the Port of Shanghai for our shipping logistics.
Request a Quotation
To receive a tailored price assessment and a comprehensive engineering solution designed to meet your specific needs, please forward your detailed technical drawings and requirements to our dedicated team. Our experienced engineers will promptly review your submission and provide you with a professional quotation and a suitable solution.
Product Tags:
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Custom 42CrMo Forged Steel Flanges C45 20CrMnMo Open Die Precision Forgings For Flanges Images
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