Free Forging Custom Forged Shaft Transmission Shaft For Heavy Equipment

Free Forging Custom Forged Transmission Shaft For Heavy Equipment. This transmission shaft is produced through free forging, offering outstanding mechanical strength, structural integrity, and flexibility in size customization. Designed for heavy equipment and industrial power transmission systems, the shaft is made from high-grade alloy or carbon steel, such as 42CrMo, 4140, or 45#, ensuring excellent fatigue resistance and durability under heavy loads.

Free forging allows for the production of large, non-standard shafts with complex shapes and customized dimensions, making it ideal for construction machinery, mining equipment, port systems, and gear-driven industrial applications.

Key Features:

• Forging Type: Open die / free forging

• Material Options: 42CrMo, 4140, 45#, or as specified

• Application: Heavy machinery, gearboxes, drive systems

• Condition: Forged + Rough or finish machined + Heat treated

• Customization: Length, diameter, splines, keyways, profiles per drawing

Advantages:

• Superior grain flow and internal quality

• Flexible sizing for oversized or non-standard parts

• Enhanced performance under high torque and impact loads

• OEM/ODM support with full inspection reports

These are the main inspection equipments:

We operate a fully equipped in-house laboratory dedicated to mechanical, chemical, and metallurgical testing. This allows us to perform real-time quality checks throughout the entire production process—from raw material selection to final inspection.

Our laboratory testing equipment includes:

Spectral Component Analyzer – for chemical composition analysis

Hydraulic Universal Testing Machine – for tensile and yield strength testing

Impact Strength Testing Machine with Cryogenic Tank – for room temperature and low-temperature impact testing

Brinell & Rockwell Hardness Testers – to assess surface and core hardness

Ultrasonic Flaw Detector – for internal defect detection (UT)Metallurgical Microscope – for grain structure and heat treatment evaluation

Program-Controlled Box Furnace – for heat treatment simulations and metallurgical testing

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.

Please send us the drawings and technique requirements, we will quote you soon.

About CHANGZHOU TIANGONG 

We are a Chinese company with over 30 years of forging experience. Our focus lies in the production of machine free forged products. We take pride in our independent quality assurance laboratory, which ensures that all our products meet our customers’ requirements. 

Our customers and partner value our products and services for 2 reasons: excellence and reliability.

Key figures 

A. Over 30 years professional free forging manufacturing experience

B. The company covers an area of 71,000 square meters

C. The construction area of the production workshop is 12,000 square meters

D. Total number of employees of 158

E. 28 engineering and technical personnel 

F. 59 skilled workers 

G. Annual production capacity is 38,000 tons

H. Steel throughput can reach 56,000 tons

Efficient and reliable solutions for customers

Industrial sector application

We design and manufacture forged parts for all industrial areas applying our experience and unique professionalism and taking the specific requirements of the markets into account. This has led us to become a forging industry leader in all industrial segments and collaborating with leading companies.

A. Wind power generation

B. Port Heavy Machinery

C. Mining

D. Ship Building

E. Chemical industrial

F. Oil industrial

G. Metallurgical industry 

H. Hydraulic industry 

I. Other high-end industrial equipment, gearbox body, parts and etc.

Customized solutions 

Modular processes allow us to engineer a solution for almost every industrial application requiring free forged parts. Our modularity means flexibility, a wide range of options, faster delivery, and most important of all, competitiveness.

All our products and production process have been designed to assure excellent, reliable and long lasting unique mechanical performances, resulting in reduced operating costs and long life.

With a wide range of products and a significant experience gained in most industrial applications, we can also provide complete engineering recommendation for customers.