Changzhou Tiangong Forging Co., Ltd.
Changzhou Tiangong Forging Co., Ltd.
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18CrNiMo7-6 20CrMnMo 17NiCrMo6-4 High Hardness Alloy Gear Shaft for Hydraulic Systems.Our high hardness alloy gear shafts made from 18CrNiMo7-6, 20CrMnMo, and 17NiCrMo6-4 are specifically engineered for hydraulic systems requiring superior surface strength, core toughness, and long-term reliability. These carburizing steels are ideal for applications where precise gear engagement and high-load endurance are critical.
| Item | Details |
|---|---|
| Product Name | 18CrNiMo7-6 20CrMnMo 17NiCrMo6-4 High Hardness Alloy Gear Shaft for Hydraulic Systems |
| Steel Grades | 20CrMnTi , 40CrNiMo (high-strength), 42CrMo , 18CrNiMo7-6 |
| Forging Process | Open-Die Forging with Controlled Grain Flow Orientation |
| Heat Treatment | Custom Heat Treatment: Normalizing per application |
| Industrial Uses | Hydraulic Systems |
| Surface Options | Precision Rough Machined, Fully CNC-Finished, or As-Forged with Scaled Surface Protection |
| Quality Assurance | 100% UT & MT Inspection, Hardness Test (HB/HRC), Mechanical Test (Tensile, Impact), CMM Check |
| Engineering Support | Full Customization Available: Material Selection, Machining, Heat Treatment, Certification |
Gear Shaft Applications
Wind Turbines – Main shafts and gearboxes
Construction Machinery – Transmission systems
Mining Equipment – Heavy-duty gear drives
Marine Equipment – Ship propulsion systems
Industrial Gearboxes – Power transmission units
Cranes & Hoists – Lifting gear mechanisms
Oil & Gas Equipment – Drilling and pumping systems
Metallurgical Machinery – Rolling mills and presses
Railway Systems – Locomotive gear assemblies
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)
Exceptional Strength and Durability
Forged steel provides superior tensile strength and impact resistance, ideal for heavy-duty applications.
Enhanced Fatigue and Shock Resistance
The forging process refines the grain flow, improving the shaft’s ability to withstand cyclic loads and sudden shocks.
Improved Reliability and Service Life
Forged gear shafts offer greater structural integrity, reducing the risk of failure in critical operations.
Superior Wear Resistance
Ideal for high-load gear systems, forged steel resists surface wear, even under harsh conditions.
Better Machinability and Dimensional Accuracy
After forging, the material is easier to machine and maintains precise tolerances for gear engagement.
Reduced Internal Defects
Compared to castings or bar stock, forged shafts have fewer voids or inclusions, ensuring consistent performance.
Customized for Specific Applications
Available in various grades like 42CrMo, 20CrMnTi, or 40CrNiMo, tailored to load, environment, and service needs.
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.
Get a Custom Quote
Kindly submit your detailed technical drawings along with specific requirements to us. Our proficient engineering team will conduct a thorough review. Subsequently, we will promptly furnish you with a comprehensive, professional quotation and a tailored solution that precisely meets your needs.