42CrMo,42CrNiMo Free Forged Planetary Gear step Shaft for Wind
Power Turbines
High-Strength 42CrMo & 42CrNiMo Free Forged Planetary Gear Step
Shaft for Wind Power Applications
Looking for reliable and durable forged shafts for wind power
turbines? Our Free Forged Planetary Gear Step Shafts are precision-engineered from high-quality 42CrMo and 42CrNiMo alloy steel, ensuring exceptional toughness, fatigue resistance,
and long service life even under harsh operating conditions. Widely
used in wind turbine gearbox systems, these shafts are critical components in transmitting power
efficiently through planetary gear mechanisms.
Manufactured using open die forging (free forging) techniques, our shafts offer superior internal structure, reduced
porosity, and improved mechanical performance compared to cast or
welded alternatives. The combination of 42CrMo and 42CrNiMo provides excellent hardenability, impact strength, and wear
resistance, making them ideal for high-load and continuous
operation environments.
Key Features:
Materials: 42CrMo / 42CrNiMo
Forging Type: Free Forged / Open Die Forged
Applications: Wind turbine planetary gear systems, heavy-duty
industrial gearboxes
Heat Treatment: Normalizing + Tempering / Quenching + Tempering
Custom machining and non-destructive testing available on request
Our forged planetary gear step shafts meet international quality
standards, with strict dimensional control, ultrasonic testing, and surface
treatment to ensure performance and reliability. With fast delivery and
stable quality, we are a trusted supplier for leading wind energy
equipment manufacturers.
42CrMo Free Forged Planetary Gear Shaft for Heavy-Duty Transmission
Systems. Our 42CrMo free forged planetary gear shafts are designed
for high-performance transmission systems operating under heavy
loads, high torque, and continuous duty cycles. Manufactured
through precision open-die forging and heat treatment, these shafts
offer superior strength, toughness, and dimensional stability
essential for critical powertrain components.
| Item | Details |
|---|
| Product Name | 42CrMo,42CrNiMo Free Forged Planetary Gear step Shaft for Wind
Power Turbines |
| Material Grades | - Alloy steel: 42CrMo - Provides high tensile strength, good
hardenability, and excellent fatigue resistance under continuous
high-load operation |
| Forging Equipment | - Hydraulic hammers: 5T / 8T / 12T - 3600T open-die forging press
for long or stepped shaft forgings - Capable of forming precise
shaft profiles including stepped ends, flanges, splines, and
keyways |
| Manufacturing Process | Hot Forging → Heat Treatment (Quenching + Tempering / Normalizing)
→ Ultrasonic Testing → Rough / Semi-Finish Machining → Final
Dimensional Inspection |
| Forging Ratio | ≥ 3.0 — Enhances grain flow alignment along shaft axis for
increased impact resistance, torsional strength, and long-term
durability |
| Applications | - Planetary gear shafts in wind turbine main gearboxes - Drive
shafts for mining, construction, and industrial machinery -
Transmission shafts in metallurgical and heavy transport systems |
| Heat Treatment Options | - Quenched + Tempered for high strength and fatigue resistance in
dynamic torque transmission - Normalizing for improved grain
refinement and dimensional control - Optional stress relief to
reduce residual stresses before final machining |
| Testing & Inspection | - Chemical: Composition analysis via spectrometer - Mechanical:
Tensile strength, yield strength, hardness, and Charpy impact tests
(longitudinal & transverse) - Ultrasonic Testing (UT): 100%
internal flaw detection - Dimensional: Runout, straightness,
diameter tolerance, and surface roughness control |
| Value-Added Services | - Pre-machining of splines, gear ends, keyways, and journals -
Surface finish customization and anti-corrosion protection - Export
packaging for long-distance shipment - Full material traceability:
heat number, batch number, and certified mechanical & NDT reports |
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.
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.
