Description
What Is a Forged Shaft?
A forged shaft is a critical mechanical transmission component designed to support rotating parts and transfer torque, motion, and bending loads. Typically produced through forging the shaft process, the component forms a cylindrical structure with stepped or varying diameters.
Key rotating elements—such as gears, rotors, turbine blades, and couplings—are mounted directly onto the shaft, making it an essential element in precision power transmission systems.
Because of its irreplaceable role in transmitting torque and ensuring mechanical stability, a forged shaft is often referred to as the “core of precision power.” It is widely used in heavy machinery, energy generation, marine propulsion, oilfield equipment, and metallurgical systems.
Types of Shaft Forgings We Supply
To meet different industrial demands, we manufacture a full range of shaft forgings, including:
Rotor Shaft Forging / Forged Rotor Shaft
Turbine Shaft Forging (steam turbine, gas turbine & hydropower turbine shafts)
Marine Shaft Forging (propulsion shafts, propeller shaft forging, tail shaft forging)
Eccentric Shaft Forging for crushers and specialized machinery
Forged Step Shaft for heavy-duty multi-diameter applications
Axle Shaft Forging for rail, mining, and vehicle systems
Cross Forging of Roll Shafts for metallurgical rolling mills
This breadth of capability ensures seamless support for industries requiring high-strength, high-reliability forged shafts.
Main Applications of Our Forged Shafts
1. Heavy Machinery & Industrial Equipment
Main shafts for:
Large compressors
Mining machines
Hoisting systems
Pump stations
Crane machinery
2. Energy & Power Generation
Rotor shaft forging for wind turbines
Forged rotor shafts for hydropower generators
Turbine shaft forging for steam turbines (HP/IP/LP rotors)
3. Marine & Offshore Engineering
Ship propulsion shafts: marine shaft forging, tail shaft forging, propeller shaft forging
Large gearbox shafts
Offshore drilling equipment drive shafts
4. Metallurgy & Steel Plants
Rolling mill shafts
Continuous casting machine shafts
Cross forging of roll shafts
5. Oil & Gas Industry
Drilling machinery shafts
Pressure pump station shafts
6. Rail & Transportation
Axle shaft forging
Locomotive wheel and drive axles
Materials Available for Forged Shafts
We offer a wide range of alloy steels and stainless steels to meet specific working conditions such as high load, corrosion, or impact environments:
42CrMo / 42CrMoA
34CrNiMo6
30CrNiMo8
Stainless steel 304 / 316L
High-hardness & corrosion-resistant customized materials
All materials are sourced from clean, defect-free steel ingots to ensure excellent internal quality.
Manufacturing & Heat Treatment Process
1. Raw Material Selection & Cutting
We select high-purity steel ingots and precisely calculate cutting dimensions to achieve optimal axial strength. Precise cutting ensures stable heating and prevents stress concentration during forging.
2. Forging the Shaft
Using hydraulic presses and free-forging or die-forging techniques, we shape the material into final shaft profiles such as:
stepped shafts
eccentric shafts
rotor shafts
long heavy-duty marine shafts
Controlled deformation ensures excellent grain flow and superior mechanical properties.
3. Heat Treatment
Depending on application requirements, we apply:
Normalizing
Quenching & Tempering
Stress relieving
Temperature and holding time are strictly controlled to achieve target hardness, toughness, tensile strength, and fatigue resistance.
4. Precision Machining
High-accuracy CNC lathes, boring mills, and grinding machines ensure:
strict dimensional tolerances
excellent surface roughness
accurate geometric alignment
5. Non-Destructive Testing (NDT)
To guarantee safety and reliability, we perform:
Ultrasonic Testing (UT)
Magnetic Particle Testing (MT)
Surface crack inspection
This ensures shafts are free from cracks, inclusions, or internal defects.
Core Advantages of Our Forged Shafts
1. Superior Mechanical Properties
The forging process yields refined, uniform grain structure, leading to:
Tensile Strength: 800–1200 MPa
Yield Strength: ≥ 650 MPa
Impact Energy (KV2): ≥ 40 J at -20°C
Suitable for high-load, long-term rotating environments.
2. High Reliability & Safety
Dense, defect-free internal structure is confirmed via UT and MT, greatly reducing the risk of fracture under heavy loads or high-speed operation.
3. Full Customization Capability
We manufacture custom shaft forgings based on:
customer drawings
material requirements
special heat treatment
non-standard dimensions
Ideal for OEM, replacement parts, and engineering upgrade projects.
4. Long Service Life
Professionally controlled heat treatment and precise machining minimize stress concentration at keyways, bearing seats, and transitions—significantly extending shaft service life.
Reviews
There are no reviews yet.