Customized 42CrMo4 / SCM440 / 1.7225 / AISI 4140 Forged Round Bar
with QT – Fast Delivery & Global Export
We manufacture customized forged round bars using premium alloy steel grades such as 42CrMo4, SCM440, 1.7225, and AISI 4140, all available with quenching and tempering (QT) heat treatment.
Our products meet both EN (European) and ASTM (American) standards and are suitable for export to Europe, North America, and other global markets.
With years of experience supplying industrial gearboxes, port machinery, wind power components, and
heavy-duty equipment, we understand the quality and performance expectations of
international customers. We offer short lead times, strict quality control (UT, hardness, dimensions), and 3.1 MTC certification upon request.
Our forged bars feature excellent toughness, high strength, and good machinability, making them ideal for demanding engineering applications. Whether
you need raw forged bars or rough-machined blanks, we can deliver cost-effective solutions with reliable quality.
Our Machined Carbon Steel Coupling Forgings are engineered for precision fit and robust torque transmission in
demanding hydraulic drive assemblies. Manufactured from high-quality medium to high carbon steel, these
coupling components offer outstanding mechanical strength, machinability, and dimensional stability under fluctuating load conditions.
Through advanced open die forging techniques, each coupling blank achieves refined grain structure and
directional fiber flow, ensuring superior fatigue resistance and structural integrity. Post-forging machining guarantees tight
tolerances and surface finish required for seamless integration
into rotating hydraulic systems.
Key Features:
Material Strength: Made from medium/high-carbon steel, optimized for load-bearing
and shock absorption.
Precision Machining: CNC-finished to meet close dimensional tolerances and surface
flatness.
Durability: High wear and fatigue resistance for extended service life under
cyclic torsion.
Custom Configurations: Available in various sizes and keyway profiles based on customer
specifications.
Application Fields:
Hydraulic pump-to-motor shaft couplings
Power transfer assemblies in mobile hydraulic systems
Construction machinery, mining conveyors, and press equipment
Any high-torque system requiring stable and aligned rotational
connection
| Item | Details |
|---|
| Product Name | Machined Carbon Steel Coupling Forgings for Hydraulic Drive
Assemblies |
| Material Grades | - Medium/high-carbon steels engineered for structural strength -
Customized compositions for high-torque hydraulic systems |
| Forging Equipment | - Hydraulic Presses: 5T, 8T, 12T - Capable of open die forging
coupling blanks with directional grain flow |
| Manufacturing Process | Raw Material Inspection → Preheating → Open Die Forging → Heat
Treatment → Rough Machining → Non-Destructive Testing → Final
Machining (if required) → Dimensional Inspection → Packaging |
| Forging Ratio | ≥ 3.0 — Ensures internal soundness and enhanced fatigue resistance
for power transmission under cyclic pressure |
| Applications | - Shaft-to-pump couplings in hydraulic drive units - Precision-fit
couplings for mobile machinery - Power transmission systems in
press equipment and mining hydraulics |
| Delivery Conditions | - Delivered in heat-treated and machined condition - Optional:
As-forged, semi-machined, or stress-relieved per customer request |
| Testing & Inspection | - Chemical Analysis (Optical Spectrometry) - Mechanical Testing:
Tensile, Hardness - Non-Destructive Testing: Ultrasonic Testing
(UT), Magnetic Particle Testing (MT) - Dimensional inspection |
