Datong Hydraulic

E355 ST52 roller burnished cylinder tube and E355 honing tubes are mostly used as cylinder barrels, such as hydraulic cylinder tube and pneumatic cylinder tubing, which are widely used for manufacturing and repairing hydraulic cylinders and pneumatic cylinders. As ST52 honed tube usually has very accuracy dimension tolerance and good surface smoothness, so this product is also used in applications where precision dimension or high smooth surface is needed.

The production Process Of E355 ST52 Roller Burnished Cylinder Tubes

The Roller burnished cylinder tube production process is a complex process that is increasing the roughness qualities of the surface. The skiving knives pass first scraping the inside layer of metal. Burnishing rollers are passing afterwards cold working the tube and creating an internal mirror surface finish. Honing is an abrasive machining process that produces a precision surface on a metal workpiece. The process consists of scrubbing an abrasive stone against it along with a controlled path. Honing is primarily used to improve the geometric form of a surface and the surface texture.

Technical Properties.
• Diameter Tolerance for ID: ISO H8 (EN ISO 286-2). We can provide special tolerance at a premium price.
• Ovality – within the limits of ID tolerance.
• Eccentricity is a maximum of 10% of the wall thickness according to EN 10305-1.
• Surface Roughness – Internal surface Roughness for SRB finished tubes is Ra = max 0.25 µm. For Honed tubes Ra = max 0.40 µm.
• Straightness ≤ 0.5/1000 mm