Changzhou Tiangong Forging Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 56000 Tons per year |
| Delivery Time | 30days |
| Packaging Details | Pallet |
| Surface Treatment | Smooth, anti-rust oil |
| Weight | 100 KG-7 TON or According to the drawing |
| Type | Free Forging and open forging |
| Application | Gantry Cranes and Heavy Port Handling Equipment |
| Durability | Long-lasting |
| Strength | High |
| Resistance | Corrosion, wear, and impact |
| Process | Forging &Rough Machining |
| Brand Name | Tian Gong |
| Model Number | TG-222 |
| Certification | ISO9001, ISO14001,ISO45001 |
| Place of Origin | Changzhou, China |
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Product Specification
| Payment Terms | T/T | Supply Ability | 56000 Tons per year |
| Delivery Time | 30days | Packaging Details | Pallet |
| Surface Treatment | Smooth, anti-rust oil | Weight | 100 KG-7 TON or According to the drawing |
| Type | Free Forging and open forging | Application | Gantry Cranes and Heavy Port Handling Equipment |
| Durability | Long-lasting | Strength | High |
| Resistance | Corrosion, wear, and impact | Process | Forging &Rough Machining |
| Brand Name | Tian Gong | Model Number | TG-222 |
| Certification | ISO9001, ISO14001,ISO45001 | Place of Origin | Changzhou, China |
| High Light | Free forging alloy shaft ，Industrial gearbox transmission shaft ，Drive system alloy 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.
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.
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.
| Item | Details (Differentiated for Free Forging Alloy Shaft) |
|---|---|
| Product Name | Free Forging Alloy Shaft for Industrial Gearbox Transmission Drive System Components |
| Material Grades | - Alloy steels such as 42CrMo4, 20CrMo, 18CrNiMo7-6 — selected for high torsional strength, fatigue resistance, and wear resistance- Materials optimized for high-load gearbox transmission and continuous industrial operation |
| Forging Equipment | - Hydraulic hammers: 5T / 8T / 12T — suitable for forging medium to long shafts- Open-die forging presses up to 3600T — ensures dense, uniform internal grain flow and defect-free structure- Specialized shaft tooling for precise keyway, bearing seat, and end face formation |
| Manufacturing Process | Steel billet cutting → Controlled heating → Free forging → Heat Treatment (Quenching + Tempering) → Intermediate inspection → Rough machining of bearing seats, keyways, and shaft ends → Non-destructive testing (UT, MT) → Finish machining → Final dimensional inspection → Protective packaging |
| Forging Ratio | ≥ 3.5 — Promotes uniform fiber alignment, excellent fatigue performance, and torsional strength under cyclic gearbox loads |
| Applications | - Drive shafts for industrial gearboxes in heavy machinery and material handling equipment- Transmission shafts in mining, steel, and construction equipment- Powertrain components requiring high torque and dimensional accuracy- Offshore and industrial gear assemblies operating under high-load conditions |
| Heat Treatment Options | - Quenched + Tempered — Ensures high core strength and surface toughness- Optional induction hardening for critical load areas- Stress relief to reduce residual stresses and enhance dimensional stability |
| Testing & Inspection | - Chemical: Spectrometer analysis for alloy verification- Mechanical: Tensile, yield, hardness, and impact toughness tests- NDT: Ultrasonic Testing (UT), Magnetic Particle Testing (MT)- Dimensional: Bearing seat diameters, shaft straightness, keyway dimensions, and end-face flatness |
| Value-Added Services | - Precision machining of keyways, bearing seats, splines, and shaft ends- Surface finishing such as shot blasting or anti-corrosion coating- Export-quality packaging for overseas shipment- Full traceability with heat numbers, batch numbers, and certified mechanical & NDT reports |
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
1994
Total Annual:
27.5 million -28 million
Employee Number:
135~150
Ecer Certification：
Verified Supplier
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 ... 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 ...
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