Finished Hydraulic Cylinder Barrel – Custom-Machined, Honed Steel Tube, Ready-to-Assemble

Our Finished Hydraulic Cylinder Barrels are precision-machined, honed steel tubes ready for direct assembly into hydraulic cylinders. 

These barrels are designed to ensure:

·Perfect piston fit and smooth travel
·High pressure performance
·Long service life
·Ideal for hydraulic systems in industrial machinery, mobile equipment, construction, and automation applications.

 Typical Steel Grades

·EN 10305-1 / E355 – cold-drawn seamless steel
·ASTM A519 / ST52 / 20MnV6 / 27SiMn – seamless or welded steel, high strength and fatigue resistance
·Other steel grades available upon request for special mechanical or corrosion-resistant requirements

 Common Sizes (OD × ID × WT × Length)

·Custom diameters and lengths available
·Standard lengths typically range from 500 mm to 3000 mm
·Wall thicknesses designed according to operating pressure and barrel diameter
·Fully customizable to meet ISO, DIN, or customer-specific hydraulic cylinder designs.

Technical Specifications

·Material: Cold-drawn seamless or welded steel, machined
·Surface Finish: Honed ID, Ra ≤ 0.4 μm (customizable)
·Tolerance: H8 or tighter on ID
·Straightness: ≤ 0.3 mm/m
·Roundness: ≤ 0.03 mm
·Application: Hydraulic cylinders, high-pressure systems, heavy-duty machinery

 Manufacturing Process

1. Steel Tube Selection – high-strength cold-drawn or welded steel
2. Precision Machining – custom OD and ID dimensions
3. ID Honing – achieves mirror-like finish, Ra ≤ 0.4 μm
4. Quality Control – straightness, roundness, dimensional and surface finish inspection
5. Ready-to-Assemble – ends finished per cylinder design requirements

 Key Features & Benefits

·Custom-machined for exact cylinder specifications
·Honed ID ensures smooth piston operation and low leakage
·High-pressure performance – suitable for heavy-duty hydraulic systems
·Ready-to-install – saves assembly time
·Customizable sizes and steel grades

 Applications

·Hydraulic cylinders in construction machinery
·Industrial presses and automation equipment
·Mobile hydraulics and lifting equipment
·Marine and offshore hydraulic systems
·Any application requiring precision hydraulic cylinder barrels