Oil Cylinder Honing Tube

An Oil cylinder honing tube—also known as a hydraulic cylinder honing tube or honed cylinder barrel—is a precision-engineered seamless steel tube designed for use in hydraulic oil cylinders. It serves as the main pressure vessel in which hydraulic oil acts to generate linear motion. The honing process ensures an ultra-smooth inner surface, high dimensional accuracy, and superior wear resistance, all of which are critical for the efficiency, reliability, and longevity of hydraulic systems.

The honing pipe is a type of seamless steel pipe that has undergone honing processing for high precision and excellent surface quality. It is not a special material but a steel pipe product that achieves outstanding performance through specific advanced processing techniques.

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Material and Structure

Oil Cylinder honing tubes are typically manufactured from high-quality carbon steel and alloy steel grades such as ST52, E355, AISI 1020, AISI 1045, and AISI 4140. These materials offer excellent strength, machinability, and resistance to fatigue under high pressure. For specialized applications in corrosive or marine environments, stainless steel grades such as 304, 316, or 420 can also be used.

The tube’s inner surface is honed or skived and roller-burnished to achieve an exceptionally smooth finish, usually with a surface roughness of Ra ≤ 0.2 μm. This fine finish minimizes friction between the piston seals and the tube wall, ensuring optimal sealing performance and reducing wear during continuous operation.

Manufacturing Process

The manufacturing of an oil cylinder honing tube involves multiple precision-controlled stages to guarantee mechanical strength and surface perfection:

• Material Selection: Choose seamless cold-drawn or hot-rolled steel tubes with uniform composition and high purity.
• Cold Drawing: Enhances dimensional accuracy and mechanical properties.
• Heat Treatment: Includes normalizing, quenching, and tempering to increase hardness, tensile strength, and ductility.
• Honing or Skiving & Roller Burnishing: Produces a smooth internal surface and precise diameter tolerance.
• External Machining (Optional): The outer surface may be turned or polished for better assembly fit.
• Surface Treatment: Tubes can be oiled, phosphate-coated, or plated to enhance corrosion resistance.
• Quality Inspection: Each tube undergoes strict testing for straightness, surface finish, dimensional precision, and mechanical strength.

Key Features and Advantages

• High Dimensional Accuracy: Inner diameter tolerance can reach H7 or H8 for precise piston fit.
• Smooth Inner Surface: Low friction and superior sealing performance extend component lifespan.
• Excellent Strength and Fatigue Resistance: Designed for high-pressure hydraulic applications.
• Enhanced Corrosion Resistance: Optional coatings or stainless steel materials available.
• Consistent Straightness and Roundness: Ensures stable piston movement and uniform wear.
• Extended Service Life: Reduced maintenance costs and enhanced operational reliability.

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Applications:

Applications include:

• Hydraulic cylinders for construction and mining equipment (excavators, loaders, cranes)
• Agricultural machinery such as harvesters, tractors, and hydraulic presses
• Industrial automation systems and robotic equipment
• Marine and offshore hydraulic cylinders for steering and lifting mechanisms
• Injection molding machines, machine tools, and industrial presses
• Aerospace and defense hydraulic systems requiring extreme reliability
• In all these fields, oil cylinder honing tubes ensure stable performance, low friction, and long service life under high-pressure oil flow.

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Why us?

We focus on the research, development, production and sales of seamless steel pipes, special-shaped steel pipes and hydraulic cylinders. We have a complete production chain and an advanced equipment system, including piercing machines, cold drawing machines, hot rolling machines, high-precision flaw detection and testing equipment. The company has passed multiple authoritative certifications such as ISO9001, API, SGS, CCS, DNV, ABS, CE, RoHS, etc., ensuring that each product complies with international standards. We are committed to providing customers with high-quality, customizable solutions to meet diverse application needs.

Relying on our own built processing base and modern workshops, combined with multiple branches and storage centers across the country, we have achieved sufficient inventory and efficient logistics coordination, significantly shortening the delivery cycle and ensuring the rapid delivery of orders.

We have established a complete service and support system. After the order is signed, the professional after-sales team can provide timely and safe on-site guidance and technical support to ensure that customers are at ease throughout the process from procurement to use.

FAQ:

1. Do you support customized design and production?

Sure. We have a professional engineering team that can conduct customized design and production with special sizes, control systems or OEM according to your requirements.

2. How fast can you deliver?

In stock sizes, it takes 3-5 days. For customized sizes, it takes 30-35 days.

3. What payment methods do you support?

We support TT payment. Generally, 30% to 50% of the payment is made in advance, and the remaining amount is paid before shipment.

4. Can you provide material certification (MTC)?

Yes, we will provide MTC to you after production is completed to ensure that the material quality meets the standards.

5. What is the minimum order quantity?

Generally, we accept trial orders. The minimum order quantity is 1-3 tons, which can be determined according to different products.