Hydraulic Cylinder 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 Oil

Material Specifications:

• Rod:
  • Material: Chrome-plated steel F-1140
  • Chrome Layer Thickness: Minimum 20 micron
  • Surface Roughness: Ra < 0.2 micron
  • Surface Hardness: Minimum 900 HV
  • Corrosion Resistance: Minimum 200 hours in neutral saline fog (ISO 9227 rating 9)
• Tube:
  • Material: Steel ST-52-3, DIN 2393
  • Inside Diameter Tolerance: ISO H9
  • Surface Roughness: Ra < 0.8 micron
• Guide-Bushing:
  • Material: Steel F-1140, nitrited (nitride hardening)
• Piston:
  • Material: Steel F-1140

Sealing System:

• Guide-Bushing:
  • Dynamic Seals: Compact polyurethane rod-seal, double lip with an NBR metal wiper seal
  • Static Seals: NBR 90 shore O-ring
• Piston:
  • Dynamic Seals: Compact double-acting polyurethane seal with a nitrile O-ring as activator, reinforced with glass-fiber polyacetal guides
  • Static Seals: Polyamide locking sealing guide

Finishing:

• Surface Finish: Black prime painting

Recommendations for Use:

1. Relief Valve: Protect the cylinder circuit with a relief valve set at 200 bar.
2. Oil Cleanliness: Ensure the oil is clean and free from contaminants (use a filter on the cylinder circuit).
3. Bleeding the Circuit: Bleed the circuit by slightly loosening the cylinder fittings before start-up.
4. Welding Precautions:
   • Do not weld on the cylinder tube.
   • If welding on the rod or bottom, dismount the cylinder first.
5. Storage:
   • Avoid outdoor storage.
   • If outdoor storage is unavoidable, ensure the rod is fully retracted or greased.
6. Cleaning:
   • Protect the rod and oil ports during high-pressure cleaning or blasting.
7. Double-Acting Cylinders: For double-acting cylinders used as single-acting, connect the unused oil port to the tank.
8. Dismounting the Cylinder: The piston is screwed onto the rod end and secured with industrial glue; use industrial glue when reassembling.