Product Description: Double Acting Fixed Pin Holes Hydraulic Cylinders

Our Double Acting Fixed Pin Holes Hydraulic Cylinders are designed for robust performance under demanding conditions. Engineered with a maximum working pressure of 200 bar and a testing pressure of 300 bar, these cylinders offer reliable operation with a working speed of up to 0.5 m/s and a temperature range of -30 ºC to +90 ºC.

Material Specifications:

• Rod: Crafted from chrome plated steel F-1140, with a minimum chrome layer thickness of 20 microns, ensuring a roughness Ra < 0.2 and a surface hardness of 900 HV. The rod is corrosion-resistant, withstanding 200 hours in neutral saline fog as per ISO9227 rating 9.
• Tube: Manufactured from steel ST-52-3, DIN 2393, with an inside diameter tolerance of ISO H9 and a roughness Ra < 0.8 microns.
• Guide-Bushing and Piston: Made from steel F-1140, with nitride hardening for the guide-bushing.

Seals:

• Guide-Bushing: Features a dynamic compact polyurethane rod-seal with double lips and an NBR metal wiper seal, along with a static NBR 90 shore O-ring.
• Piston: Equipped with a dynamic double-acting polyurethane seal and a nitrile O-ring as an activator, reinforced by polyacetal guides with glass fiber. A static polyamide locking sealing guide is also included.

Finishing:

• The cylinders are finished with a black prime painting, ensuring durability and resistance to environmental factors.

Recommendations for Use:

• Protect the cylinder circuit with a relief valve set at 200 bar.
• Ensure oil cleanliness by using a filter in the cylinder circuit.
• Bleed the circuit before startup, avoid welding on the cylinder tube, and protect the cylinder during high-pressure cleaning.
• For long-term storage, keep the rod retracted or greased, and if dismounting the cylinder, use industrial glue when reassembling.