42CrMo, 18CrNiMo7-6, or 20CrMnTi High-Speed Transmission Shaft Free 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

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.