Hydraulic Double-Acting Spherical End Cylinder
The hydraulic double-acting spherical end cylinder is a critical component in various industrial applications, providing powerful and precise motion control. This article will explore the features, materials, seals, finishing, and recommendations for using this specialized cylinder, highlighting its robust design and operational efficiency.
Key Features
Bore Size: 50mm
Rod Diameter: 25mm
Stroke Length: 100mm
Closed Centre Length: 320mm
Port Size: 3/8″ BSP
These dimensions make it suitable for a wide range of applications, ensuring versatility and adaptability in different industrial settings.
Characteristics
Maximum Working Pressure: 200 bar
Maximum Testing Pressure: 300 bar
Maximum Working Speed: 0.5 m/s
Working Temperature Range: -30 ºC to +90 ºC
Oil Type: Mineral hydraulic
These characteristics underscore the cylinder’s ability to operate under high pressure and varying environmental conditions, making it reliable for demanding tasks.
Material Specifications
Rod
Material: Chrome plated steel F-1140
Minimum Chrome Layer Thickness: 20 microns
Roughness: Ra < 0.2
Minimum Surface Hardness: 900 HV
Corrosion Resistance: Minimum 200 hours in neutral saline fog according to ISO 9227, rating 9
Tube
Material: Steel ST-52-3, DIN 2393
Inside Diameter Tolerance: ISO H9
Roughness: Ra < 0.8 microns
Guide-Bushing: Steel F-1140 nitrited (nitride hardening)
Piston: Steel F-1140
The high-quality materials ensure durability, strength, and longevity, crucial for heavy-duty applications.
Seals
Guide-Bushing Seals
Dynamic: Compact polyurethane rod-seal, double lip. NBR metal wiper seal
Static: NBR 90 shore O-ring
Piston Seals
Dynamic: Compact double-acting polyurethane seal, plus nitrile O-ring as activator. Special polyacetal guides reinforced with glass fiber
Static: Polyamide locking sealing guide
These seals provide excellent resistance to wear and leakage, maintaining optimal performance over time.
Finishing
Paint: Black prime painting
The black prime painting offers a protective layer against corrosion and external damage, enhancing the cylinder’s lifespan.
Recommendations
Relief Valve
Protect the cylinder circuit with a relief valve set at 200 bar.
Oil Cleanliness
Check the oil cleanliness (pollution) and prevent it from having foreign objects by placing a filter on the cylinder circuit.
Bleeding the Circuit
Bleed the circuit by slightly loosening the cylinder fittings before starting up.
Welding Precautions
Do not weld on the cylinder tube.
Before welding on the rod or the bottom, dismount the cylinder.
Storage
For long-term storage, avoid outdoor storage.
If outdoor storage is unavoidable, ensure the rod is completely retracted or greased.
High-Pressure Cleaning
Protect the rod and oil ports suitably during high-pressure cleaning or blasting.
Single-Acting Use
For double-acting cylinders working as single acting, connect the non-used oil port to the tank.
Dismounting the Cylinder
If dismounting the cylinder, note that the piston is screwed onto the rod end and fixed with industrial glue. Use industrial glue when mounting again.
The hydraulic double-acting spherical end cylinder is a versatile and durable component designed for high performance in various industrial applications. Its robust construction, high-quality materials, and precise engineering ensure reliability and longevity. By following the recommended guidelines for use and maintenance, this cylinder will provide efficient and dependable service in even the most demanding environments.
