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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 42CrMo Transmission Shaft 18CrNiMo7-6 20CrMnTi High Speed Forging
China 42CrMo Transmission Shaft 18CrNiMo7-6 20CrMnTi High Speed Forging

  1. China 42CrMo Transmission Shaft 18CrNiMo7-6 20CrMnTi High Speed Forging
  2. China 42CrMo Transmission Shaft 18CrNiMo7-6 20CrMnTi High Speed Forging
  3. China 42CrMo Transmission Shaft 18CrNiMo7-6 20CrMnTi High Speed Forging

42CrMo Transmission Shaft 18CrNiMo7-6 20CrMnTi High Speed Forging

  1. MOQ: 1
  2. Price: USD500-USD1000/piece
  3. Get Latest Price
Payment Terms T/T
Supply Ability 56000 Tons per year
Delivery Time 30days
Packaging Details Pallet
Material Alloy Steel or Customized
Weight 100 KG-7 TON
Type Free Forging
Application High-speed gearboxes and motor shafts - Rail transit propulsion systems - Precision couplings and turbine transmission assemblies - Automotive and industrial drive modules requiring low vibration and high reliability
Packing Pallet or Customized
Precision High
Shape Customizable
Surface Finish Removal of oxide scale or Customized
Customization Available
Lead Time Negotiable
Brand Name Tian Gong
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 Alloy Steel or Customized Weight 100 KG-7 TON
Type Free Forging Application High-speed gearboxes and motor shafts - Rail transit propulsion systems - Precision couplings and turbine transmission assemblies - Automotive and industrial drive modules requiring low vibration and high reliability
Packing Pallet or Customized Precision High
Shape Customizable Surface Finish Removal of oxide scale or Customized
Customization Available Lead Time Negotiable
Brand Name Tian Gong Certification ISO9001, ISO14001,ISO45001
Place of Origin Changzhou, China
High Light 42crmo transmission shafttransmission shaft 18crnimo7-620crmnti high speed forging

42CrMo, 18CrNiMo7-6, or 20CrMnTi High-Speed Transmission Shaft Free Forging. High-Speed Transmission Shaft Free Forging for Precision Powertrain and Drive Systems.The High-Speed Transmission Shaft Free Forging is a precision-engineered forged component designed for high-RPM powertrain and drive systems. Manufactured from premium alloy steels such as 42CrMo, 18CrNiMo7-6, or 20CrMnTi, this shaft forging delivers excellent rotational balance, surface hardness, and torsional strength under continuous high-speed loading conditions.

 

Engineered for superior fatigue resistance, dimensional stability, and minimal vibration, these forgings are ideal for use in turbo gearboxes, electric motor drive assemblies, rail transmission systems, and high-speed mechanical couplings. The directional grain flow achieved through open-die forging enhances mechanical integrity and operational life in critical transmission environments.

This product supports various post-forging services including spline machining, keyway broaching, stress-relief heat treatment, and precision grinding, ensuring full compatibility with OEM powertrain designs and performance standards.

Key features:

  • High fatigue resistance and torsional strength to withstand rapid cyclic loads

  • Superior dimensional stability and concentricity for high-speed rotation

  • Optimized grain flow for durability and long service life

  • Optional carburizing capability for hardened surfaces (especially with 18CrNiMo7-6, 20CrMnTi)

Available types include:

  • Spline shafts for gear couplings and reducers

  • Stepped shafts for speed-changing mechanisms

  • Hollow or solid transmission shafts for rail and industrial drives

  • Custom shafts with integrated shoulders, keyways, and journal seats

Item Details
Product Name 42CrMo, 18CrNiMo7-6, or 20CrMnTi High-Speed Transmission Shaft Free Forging
Material Grades - Precision-grade alloy steels:42CrMo, 18CrNiMo7-6, or 20CrMnTi - Optimized for high-speed rotation, low inertia, and thermal stability - Excellent tensile strength, fatigue life, and dimensional consistency
Forging Equipment - Hydraulic hammers: 5T / 8T / 12T - 3600T open-die forging press suitable for long, slim, and spline shaft geometries - Capable of forming integrated keyways, shoulders, and journal zones
Manufacturing Process Hot Forging → Quenching + Tempering / Normalizing → Ultrasonic Testing → Rough / Semi-Finish Machining → Dimensional & Surface Inspection
Forging Ratio ≥ 3.0 — Promotes longitudinal grain alignment for increased fatigue resistance, torsional strength, and high-speed stability
Applications - High-speed gearboxes and motor shafts - Rail transit propulsion systems - Precision couplings and turbine transmission assemblies - Automotive and industrial drive modules requiring low vibration and high reliability
Heat Treatment Options - Quenched + Tempered for strength, ductility, and microstructure uniformity - Normalizing for dimensional stability before finishing - Optional stress relief to prevent distortion during machining
Testing & Inspection - Chemical: Spectrometer-controlled alloy composition analysis - Mechanical: Hardness, tensile, yield strength, and axial/transverse impact testing - Ultrasonic (UT): 100% longitudinal scanning for internal flaws - Dimensional: Concentricity, straightness, journal tolerance, keyway accuracy, shaft runout
Value-Added Services - Pre-machining: keyways, splines, shoulders, chamfers - Dynamic balancing upon request - Protective packaging for transport - Complete traceability: heat number, forging batch, inspection certification

 

 

The steel forgings production flow:

Raw material steel ingot into warehouse(test the chemical composition) → Cutting→ Heating(Furnace temperature test) → Heat treatment after forging(Furnace temperature test) Discharge the furnace(blank inspection)→ Machining→ Inspection(UT,MT,Visal dimension, hardness)→ QT→ Inspection(UT, mechanical properties, hardness, grain size)→ Finish machining→ Inspection (dimension)→ Packing and Marking(steel stamp, mark)→ Storage Shipment.

Packaging & Delivery
Rust-preventive coating

Heavy-duty seaworthy wooden boxes

Custom labeling and barcoding

Global shipping support with flexible delivery terms (FOB, CIF, EXW)

 

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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