Honed Tube for Hydraulic Cylinders
Honed tubes are essential components in the construction of hydraulic cylinders, serving as the inner barrel through which the piston travels. These tubes are precision-machined to tight tolerances and extremely smooth surface finishes to ensure optimal sealing performance, reduce friction, and enhance cylinder lifespan.
Manufacturing Process
There are two main processes used to manufacture honed tubes: honing and skiving & roller burnishing. The honing process involves abrasive machining that improves the geometric form and surface texture. In contrast, skiving and roller burnishing combine internal cutting and surface finishing to produce an exceptionally smooth inner bore.
Material Specifications
Common materials used for honed tubing include ST52 (DIN 2391), SAE 1020/1026, and 42CrMo4. These materials offer excellent mechanical properties, weldability, and durability under high pressure and temperature conditions.
Technical Parameters
Honed tubes are typically produced with an internal diameter ranging from 30mm to 600mm, wall thickness from 2mm to 50mm, and length up to 12 meters. Inner surface roughness is usually ≤ Ra 0.2~0.4 μm, with dimensional tolerances conforming to ISO H8 or H9 standards.
Key Benefits
The honed finish helps minimize wear and tear on seals and extends the service life of the hydraulic system. Other advantages include improved oil retention, reduced leakage, and higher efficiency under dynamic load conditions.
Aplicaciones
Honed tubing is widely used in hydraulic and pneumatic cylinders for industries such as construction equipment, agricultural machinery, automotive manufacturing, mining, and marine hydraulics. Its performance under pressure and precision fit make it indispensable for modern hydraulic systems.
If you’re looking for reliable honed tube suppliers, it’s essential to ensure quality control in material sourcing, machining, and inspection. Look for manufacturers with experience, proven track records, and the capability to deliver both standard and custom sizes to meet your needs.
