Hydro Pneumatic Controls, Electro Pneumatic Positioner, Pneumatic Cylinders, Rotary Actuator, Mumbai, India
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Pneumatic Cylinders


Pneumatic cylinders or air cylinders are devices which use the power of compressed gas to produce a force in a reciprocating linear motion. Once actuated, compressed air enters into the tube at one end of the piston and, hence, imparts force on the piston. Consequently, the piston becomes displaced.

Engineers sometimes prefer to use pneumatic cylinders because they are quieter, cleaner, and do not require large amounts of space for fluid storage.
Because the operating fluid is a gas, leakage from a pneumatic cylinder will not drip out. pneumatic cylinders vary in appearance, size and function

Single-acting Pneumatic cylinders

Single-acting cylinders (SAC) use the pressure imparted by compressed air to create a driving force in one direction (usually out), and a spring to return to the "home" position.

Double-acting Pneumatic cylinders

Double-acting cylinders (DAC) use the force of air to move in both extend and retract strokes. They have two ports to allow air in, one for outstroke and one for instroke.

Multi-stage, telescopic Pneumatic cylinder

telescopic cylinders can be either single or double-acting. The telescoping cylinder incorporates a piston rod nested within a series of hollow stages of increasing diameter.

Other types

Although SACs and DACs are the most common types of pneumatic cylinder, the following types are not particularly rare:

  • Through rod air cylinders: piston rod extends through both sides of the cylinder, allowing for equal forces and speeds on either side.
  • Cushion end air cylinders: cylinders with regulated air exhaust to avoid impacts between the piston rod and the cylinder end cover.
  • Rotary air cylinders: actuators that use air to impart a rotary motion.
  • Rodless air cylinders: These have no piston rod. They are actuators that use a mechanical or magnetic coupling to impart force, typically to a table or other body that moves along the length of the cylinder body, but does not extend beyond it.
  • Tandem air cylinder: two cylinders are assembled in series in order to double the force output.
  • Impact air cylinder: high velocity cylinders with specially designed end covers that withstand the impact of extending or retracting piston rods.

Rodless pneumatic cylinders

Some rodless types have a slot in the wall of the cylinder that is closed off for much of its length by two flexible metal sealing bands. The inner one prevents air from escaping, while the outer one protects the slot and inner band. The piston is actually a pair of them, part of a comparatively long assembly.

Another type has cables (or a single cable) extending from both (or one) end[s] of the cylinder. The cables are jacketed in plastic (nylon, in those referred to), which provides a smooth surface that permits sealing the cables where they pass through the ends of the cylinder. Of course, a single cable has to be kept in tension.

Still others have magnets inside the cylinder, part of the piston assembly, that pull along magnets outside the cylinder wall. The latter are carried by the actuator that moves the load. The cylinder wall is thin, to ensure that the inner and outer magnets are near each other. Multiple modern high-flux magnet groups transmit force without disengaging or excessive resilience.

Depending on the job specification, there are multiple forms of body constructions available for the pneumatic cylinders

  • Tie rod pneumatic cylinders: The most common cylinder constructions that can be used in many types of loads. Has been proven to be the safest form.
  • Flanged-type pneumatic cylinders: Fixed flanges are added to the ends of cylinder
  • One-piece welded cylinders: Ends are welded or crimped to the tube, this form is inexpensive but makes the cylinder non-serviceable.
  • Threaded end cylinders: Ends are screwed onto the tube body. The reduction of material can weaken the tube and may introduce thread concentricity problems to the system.
  Inch Series Pneumatic Cylinders
Medium Bore Air Cylinders
. Sizes available 1 and a 1/2 inch, 2 inch , 2 and a 1/4 inch, 2 and a 1/2inch , 3 inch and 4 inch bore diameter.
. Suitable for a wide range of applications.
Large Bore Air Cylinders
Sizes available 5 inch, 6 inch, 8 inch, 10 inch, 12 inch and 14 inch bore diameter.
Suitable for a wide range of applications.
  ISO Air Cylinders
• According to ISO 15552 & VDMA 24562
  • Cylinder tube of extruded profile aluminium
  Round Cylinders
  Compact Cylinders
  Custommade Products
Hydro Pneumatic Controls, Electro Pneumatic Positioner, Pneumatic Cylinders, Rotary Actuator, Mumbai, India
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Maharashtra, India. 400 059
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Hydro Pneumatic Controls, Electro Pneumatic Positioner, Pneumatic Cylinders, Rotary Actuator, Mumbai, India
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