Free Forging Alloy Shaft for Industrial Gearbox Transmission Drive System Components

This free-forged alloy shaft is specifically designed for industrial gearbox drive systems, delivering exceptional strength, torsional rigidity, and long-term reliability under high-load and continuous operation conditions. Manufactured through precision-controlled free forging, the shaft exhibits a refined internal grain structure and uniform metallurgical integrity, ensuring superior fatigue resistance, impact toughness, and dimensional stability for critical transmission applications.

Product Features

• High Mechanical Strength – Free forging ensures dense, defect-free internal structure capable of withstanding heavy torque and cyclic loads.

• Excellent Fatigue and Shock Resistance – Optimized forging and heat treatment deliver reliable performance under repeated start-stop and load variations.

• Dimensional Accuracy – Designed for precision machining, maintaining tight tolerances for gear mounting, keyways, and bearing interfaces.

• Material Versatility – Available in alloy steels such as 42CrMo4, 30CrNiMo8, and 18CrNiMo7-6, selected for high torsional strength and wear resistance.

• Corrosion and Wear Resistance – Optional surface treatments or coatings enhance durability in demanding industrial environments.

Application Fields

• Industrial gearbox drive shafts for heavy machinery and material handling equipment

• Transmission components in mining, steel, and construction equipment

• Power transmission systems requiring high torque, precision, and long service life

• Offshore or marine gearbox assemblies with cyclic load demands

This shaft is ideal for industries and applications where precision, reliability, and mechanical integrity are critical for continuous high-load operations.

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.