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Product range

COSMA GROUP makes 40.000 cylinders per year, both in small and big lots.

  • Simple acting cylinder   -  The simple effect cylinder is carried out when a single development strength is required, which can be a thrust or tensile strength; size varies from bore D. 20 to bore D. 250; all cylinders have an anti-oxidant valve
  • Double acting cylinderThe double effect cylinder is carried out when both an opening and closing strength is required; size varies from bore D. 20 to bore D. 250. 
  • Cylinder with internal power supplyThe cylinder with internal power supply allows you to keep the maximum liner dimension on all its length; this allows to assemble the cylinder within tubular tyres or in other similar situations. It can be made both simple and double effect, its power supply is at the cylinder edges or at one edge only
  • Plunging cylinder   - The plunging cylinder is carried out when just the thrust strength is required; its characteristics allow you to use it even in highly oxidant conditions
  • Plunging cylinder at several rods  - The plunging cylinder at several rods is carried out when just a thrust strength is required and its travel must be longer than its length. 
  • Plunging cylinder with opposing rods -The plunging cylinder with opposing rods is carried out when its travel must be longer than its height; in this case the travel occurs on both sides.  
  • Sequential cylinder at 2 rods  - The sequential cylinder at 2 rods allows you to have a travel longer than its length and the travels occur in planned sequence
  • 2/3-rod synchronising cylinder -the 2/3-rod synchronising cylinder is carried out when a steady speed is required for all its travel; this use is needed on vertical aerial work platforms  with on-board operator. .
  • Cylinder with power factor correction valve - The cylinder with power factor correction valve is carried out when a synchronisation between two cylinders is required. The correction valve can work properly both during opening and closing   
  • Cylinder with memory - The cylinder with memory is carried out when you need a variable travel. The cylinder allows you to reduce its travel and stop it for next cycles, without a mechanical intervention. You can carry out this operation whenever you need it.   
  • Cylinder with brake - The cylinder with brake is carried out when we need to reduce speed during opening and closing. This allows to stop the cycle with no collision
  • Compensator cylinder  -  The compensator cylinder is carried out when we have a two-cylinder system and one of the cylinders is fed by the other. This allows a steady travel.    

Technical characteristics and related advantages

  • Bore: from 20 mm to 250 mm.
  • Rod diameter: from 12 mm to 140 mm.
  • Maximum stroke: 4,000 mm.
  • Working pressures up to 500 bar.
  • Barrel materials in compliance with the DIN UNI standards.
  • CK 45-42NCM4 term-hardened steel rods 20MnV6 and NIKROM type.
  • Customised thickness of chrome plating, with certification ASTM B117 test up to 500 hours.
  • Our products can be supplied with zincing or painting treatment.