EAST AI Hydraulic Manufacturer
Since 2006
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Honed Tube
EAST AI
42CrMo4
Max. 13m
H8~H10
0.5/1000
Hydraulic cylinders for mobile equipment, industrial machinery, and heavy-duty systems
Wooden cases
≤0.4u
Product Description
Manufactured from alloy steel, 42CrMo4 provides outstanding yield strength, tensile strength, and resistance to mechanical stress.
Suitable for high-cycle hydraulic applications where abrasion resistance is critical.
Handles repetitive pressure fluctuations without cracking or deformation.
Honed to precise tolerance, ensuring perfect fit between piston and cylinder.
The polished inner surface minimizes friction and extends seal life.
Optional anti-rust oil, phosphate coating, or chrome plating available for enhanced durability.
Applicable to hydraulic cylinders, machine tools, lifting platforms, offshore equipment, and mining machinery.
The manufacturing of honed tubes involves multiple steps to achieve the required surface finish, tolerance, and mechanical strength. Below is the typical process flow for 42CrMo4 Honed Tube:
High-quality 42CrMo4 alloy steel is sourced, ensuring compliance with international standards such as EN 10297 and DIN 2391.
The raw steel billet undergoes hot rolling or cold drawing to form seamless tubes with the required outer diameter.
To achieve the desired hardness, toughness, and tensile strength, the tubes are quenched and tempered according to precise heat treatment cycles.
The inner diameter is rough machined to prepare for honing or skiving & roller burnishing.
The honing process removes surface irregularities, while skiving & roller burnishing creates a mirror-like smooth bore surface with Ra 0.2–0.4 μm finish.
Tubes are measured to guarantee tight tolerances (ISO H8/H9) for ID and roundness.
The inner and outer surfaces are treated with anti-rust oil to prevent oxidation during storage and shipment.
Every tube undergoes 100% quality inspection before packaging and delivery.
The 42CrMo4 Honed Tube is engineered for high-load and high-pressure hydraulic applications. It is widely used across industries such as:
Excavators, loaders, bulldozers, and cranes require honed tubes with excellent fatigue resistance.
Hydraulic cylinders in tractors, harvesters, and plows demand durability and smooth operation.
Drill rigs, dump trucks, and crushers benefit from the strength and wear resistance of 42CrMo4.
Machine tools, presses, and automation systems require precision honed tubes for hydraulic systems.
Hydraulic cylinders for ships, offshore rigs, and port cranes must withstand harsh, corrosive environments.
Used in hydraulic systems of wind turbines, oilfield equipment, and power plants.
Our factory maintains a large stock of 42CrMo4 honed tubes in standard sizes to meet urgent delivery requirements.
Every 42CrMo4 Honed Tube undergoes strict quality inspections before leaving the factory:
ensures compliance with EN 10297 & DIN standards.
yield strength, tensile strength, hardness, and elongation checked.
detects internal cracks or inclusions.
OD, ID, wall thickness, and tolerance measurement.
verifies smooth bore finish.
ensures accurate geometry.
verifies performance under working pressure.
Our 42CrMo4 Honed Tubes are certified by international authorities, including:
These certifications ensure that every tube delivered to customers meets global quality standards.
FAQ
