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China factory - Changzhou Tiangong Forging Co., Ltd.

Changzhou Tiangong Forging Co., Ltd.

  • China,Changzhou ,Jiangsu
  • Verified Supplier

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China Industrial Mild Steel Gears Drive Gear Forged From 4140 42CrMo4 Steel
China Industrial Mild Steel Gears Drive Gear Forged From 4140 42CrMo4 Steel

  1. China Industrial Mild Steel Gears Drive Gear Forged From 4140 42CrMo4 Steel
  2. China Industrial Mild Steel Gears Drive Gear Forged From 4140 42CrMo4 Steel
  3. China Industrial Mild Steel Gears Drive Gear Forged From 4140 42CrMo4 Steel
  4. China Industrial Mild Steel Gears Drive Gear Forged From 4140 42CrMo4 Steel

Industrial Mild Steel Gears Drive Gear Forged From 4140 42CrMo4 Steel

  1. MOQ: 1
  2. Price: USD1000-USD3000/piece
  3. Get Latest Price
Payment Terms T/T
Supply Ability 56000 Tons per year
Delivery Time 30days
Packaging Details Pallet
Material 4140/42CrMo4
Origin Of Goods Changzhou, Jiangsu
Other Name Forged Gear
Industry Free Forging & Open Die Forging
Tolerance High precision
Forging Weight 100kg|100kg-7ton
Machining Rough Machining
Dimensions Customizable
Brand Name Tiangong
Model Number Tiangong 65
Certification ISO9001, ISO14001,ISO45001
Place of Origin Changzhou, China

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  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T Supply Ability 56000 Tons per year
Delivery Time 30days Packaging Details Pallet
Material 4140/42CrMo4 Origin Of Goods Changzhou, Jiangsu
Other Name Forged Gear Industry Free Forging & Open Die Forging
Tolerance High precision Forging Weight 100kg|100kg-7ton
Machining Rough Machining Dimensions Customizable
Brand Name Tiangong Model Number Tiangong 65
Certification ISO9001, ISO14001,ISO45001 Place of Origin Changzhou, China
High Light Industrial mild steel gears 4140mild steel gears 42CrMo442CrMo4 Drive Shaft Forged

Industrial Drive Shaft Forged from 4140/42CrMo4 Steel for Wind & Port Machinery. Our industrial drive shafts are precision-forged from high-quality 4140 / 42CrMo4 alloy steel, known for their excellent toughness, fatigue resistance, and high tensile strength. These forged components are engineered to meet the rigorous demands of heavy-duty applications, especially in wind power systems, port handling equipment, and marine machinery.

 

Item Details
Product Name Industrial Drive Shaft Forged from 4140/42CrMo4 Steel for Wind & Port Machinery
Material Grades 4140/42CrMo4
Forging Equipment - Hydraulic Hammers: 5T, 8T, 12T - Supports large-section open die forging 
Manufacturing Process Forging → Heat Treatment → Rough Machining → Dimensional & NDT Inspection
Forging Ratio ≥ 3.0 — Ensures fine grain refinement, enhanced tensile strength, and excellent internal soundness for heavy-duty operation
Applications wind turbines, port cranes, hoisting systems, mining crushers, and industrial gearboxes, where high strength, torque resistance, and durability are required.
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

 

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

Advantages:

  • High strength and toughness

  • Excellent fatigue and wear resistance

  • Custom sizes and machining available

  • OEM/ODM service based on drawings


Specifications

  • Weight Range: 100 kg – 7 tons (customized to accommodate both medium-size drive shafts and large-section marine components)

  • Machining-Ready Surface: Delivered with precise allowances for final CNC finishing
  • Grain Structure: Refined through forging ratio ≥3.0 and controlled heat treatment

  • Dimensional Tolerance: Custom tolerances per project needs

 

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.

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • 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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  • Reach Us
  • Changzhou Tiangong Forging Co., Ltd.
  • Wangxia Village, Luoxi Town, Xuejia Town, Xin Bei District, Changzhou City, Jiangsu Province, China
  • https://www.freeforgings.com/

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