Hydraulic Top Link (Fixed Mount) Cylinder/Ram 50Bore 30Rod 200Stroke 470Closed 745AAR C/W DPO CHECK VALVE

  • Bore Size: 50 mm
  • Rod Size: 30 mm
  • Stroke Length: 200 mm
  • Closed Centre Length: 470 mm
  • Max Working Pressure: 200 Bar
  • Configuration: Double Acting
  • Pin Holes: At both base and rod end

Product Description

Characteristics:

  • Maximum Working Pressure: 200 bar
  • Maximum Testing Pressure: 300 bar
  • Maximum Working Speed: 0.5 m/s
  • Working Temperature: -30 ºC to +90 ºC
  • Oil Type: Mineral hydraulic

Material:

  • Rod: 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 (ISO9227 rating 9)
  • Tube: Steel ST-52-3, DIN 2393
    • Inside Diameter Tolerance: ISO H9
    • Roughness: Ra < 0.8 microns
  • Guide-Bushing: Steel F-1140 (Nitrited)
  • Piston: Steel F-1140

Seals:

  • Guide-Bushing:

    • Dynamic: Compact polyurethane rod-seal, double lip, NBR metal wiper seal
    • Static: NBR 90 shore O-ring
  • Piston:

    • Dynamic: Compact double-acting polyurethane seal, plus nitrile O-ring as activator, special polyacetal guides reinforced with glass fiber
    • Static: Polyamide locking sealing guide

Finishing:

  • Coating: Black prime painting

Recommendations:

  • Use a relief valve set at 200 bar to protect the cylinder circuit.
  • Ensure oil cleanliness by using a filter on the cylinder circuit.
  • Bleed the circuit by loosening the cylinder fittings slightly before startup.
  • Avoid welding on the cylinder tube; dismount the cylinder before welding on the rod or bottom.
  • Store cylinders indoors if possible; if stored outdoors, retract the rod or grease it.
  • Protect the rod and oil ports during high-pressure cleaning or blasting.
  • For double-acting cylinders used as single acting, connect the unused oil port to the tank.
  • When dismounting, note that the piston is screwed onto the rod end and fixed with industrial glue; use industrial glue when reassembling.

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