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Changzhou Tiangong Forging Co., Ltd.

  • China,Changzhou ,Jiangsu
  • Verified Supplier
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China 18CrNiMo7-6 20CrMnMo Alloy Steel Forging Blank For Sun Gear Planetary Gear
China 18CrNiMo7-6 20CrMnMo Alloy Steel Forging Blank For Sun Gear Planetary Gear

  1. China 18CrNiMo7-6 20CrMnMo Alloy Steel Forging Blank For Sun Gear Planetary Gear
  2. China 18CrNiMo7-6 20CrMnMo Alloy Steel Forging Blank For Sun Gear Planetary Gear
  3. China 18CrNiMo7-6 20CrMnMo Alloy Steel Forging Blank For Sun Gear Planetary Gear

18CrNiMo7-6 20CrMnMo Alloy Steel Forging Blank For Sun Gear Planetary Gear

  1. MOQ: 1
  2. Price: USD1000-USD2000/piece
  3. Get Latest Price
Payment Terms T/T
Supply Ability 56000 Tons per year
Delivery Time 30days
Packaging Details Pallet
Application Wind power, port machinery, mining and oil extraction
Quality Control Ultrasonic tested (UT) & Mechanical Properties
Material 42CrMo4 or Customized
Production Process Forging
Hardness Customized according to customer requirements
Surface Finish Smooth
Heat Treatment Annealing and tempering
Size Customized according to drawings
Brand Name Tiangong
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
Application Wind power, port machinery, mining and oil extraction Quality Control Ultrasonic tested (UT) & Mechanical Properties
Material 42CrMo4 or Customized Production Process Forging
Hardness Customized according to customer requirements Surface Finish Smooth
Heat Treatment Annealing and tempering Size Customized according to drawings
Brand Name Tiangong Certification ISO9001, ISO14001,ISO45001
Place of Origin Changzhou, China
High Light 20crmnmo alloy forging blank18crnimo7-6 gear forging18crnimo7-6 alloy forging blank

18CrNiMo7-6 20CrMnMo Alloy Steel Forging Blank For Sun Gear Planetary Gear. Our 18CrNiMo7-6 and 20CrMnMo alloy steel forging blanks are the foundational material for high-performance sun and planetary gears. Meticulously forged, these blanks deliver exceptional strength, toughness, and fatigue resistance, ensuring the final gears withstand extreme torque and continuous operation in demanding power transmission systems.


Product Features

  • Superior Mechanical Properties: Forged from premium alloy steels, offering outstanding strength, hardness, and surface hardenability for high-stress gears.
  • Exceptional Fatigue Resistance: Refined grain structure provides superior resistance to cyclic loading and contact fatigue, extending gear lifespan.
  • High Toughness and Wear Resistance: Designed to resist wear, pitting, and spalling, ensuring smooth power transmission even under heavy loads.
  • Optimal for Case Hardening: These alloy steels are ideal for case hardening, allowing for a hard surface with a tough, ductile core.
  • Internal Purity and Homogeneity: Forging eliminates defects, resulting in a dense, uniform material structure for consistent performance.
  • Precision Machining Foundation: Supplied as near-net-shape blanks for efficient machining to precise gear tooth geometries.

Application Scenarios

These alloy steel forged blanks are indispensable for sun and planetary gears in a wide range of heavy-duty and high-precision applications:

  • Wind Energy Gearboxes: Critical for efficiently converting low-speed rotor rotation to high-speed generator input, handling immense torque.
  • Heavy Industrial Machinery: Found in planetary gear systems for large excavators, mining equipment, crushers, and rolling mills, providing robust power.
  • Automotive & Off-Highway Transmissions: Essential for automatic transmissions and wheel drives in heavy trucks and construction vehicles.
  • Marine Propulsion Systems: Used in marine gearboxes for ships and offshore platforms, ensuring reliable power transfer.
  • Robotics & Automation: Employed in high-precision robotic arms and automated machinery requiring compact, high-torque gear solutions.
  • Aerospace & Defense: For gears in aircraft landing gear and helicopter rotor systems, demanding lightweight yet extremely strong components.
Item Details
Product Name 18CrNiMo7-6 20CrMnMo Alloy Steel Forging Blank For Sun Gear Planetary Gear
Material Grades - Case-hardening alloy steel: 18CrNiMo7-6 - Known for high tensile strength, excellent core toughness, and superior wear resistance after heat treatment - Optimized for surface carburizing and deep hardening applications in rotating power components
Forging Equipment - Hydraulic Hammers: 5T, 8T, 12T - Supports custom open die forging for long shafts and stepped blanks - Suitable for heavy-duty transmission elements with complex geometries
Manufacturing Process Forging → Heat Treatment → Rough Machining → Finish Machining (optional) → Dimensional & Ultrasonic Inspection
Forging Ratio ≥ 3.0 — Promotes fine grain structure, uniform fiber alignment, and improved fatigue life under high-speed rotational and torsional loads
Applications Forged blanks engineered for: - Transmission shafts, gear blanks, coupling hubs, spline drives - Used in heavy machinery, mechanical gearboxes, metallurgical drives, and wind turbine systems - Withstands high torque, cyclic loading, and localized surface fatigue
Heat Treatment Options - Carburized + Quenched + Tempered: Delivers hardened wear-resistant surface and tough, ductile core - Optional normalization or stress relieving for intermediate machining steps
Testing & Inspection - Chemical Analysis: Checked using optical spectrometry - Mechanical Testing: Tensile strength, impact toughness, and hardness values - Ultrasonic Testing: Ensures no internal cracks or segregations - Dimensional Checks: Bore, runout, and parallelism control tools
Value-Added Services - Precision Shafts: Custom-Made, Prepped & Delivered We offer custom shaft lengths, stepped profiles, and bore dimensions. Each piece features CNC pre-machining, anti-rust protection, and batch identification, with full logistics coordination for all deliveries.

 

 

The steel forgings production 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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  • 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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