Editorial

Single Acting Hollow Plunger Hydraulic Cylinders

                            Single Acting Hollow Plunger Hydraulic Cylinders discharge on the forward or return stroke of the piston and every cycle of the pump displaces only one volume of liquid. In double-acting pumps, the liquid is discharged on both the advancing and return stroke of the piston. Plunger pumps are only single-acting as RIVERLAKE HYDRAULIC and the piston pumps can be either single- or double-acting.

Why choose a Single Hollow Plunger Hydraulic Cylinders

                               There are four reasons why a single-acting cylinder can be a more effective and efficient option:

  • Fail-safe where safety may be a serious consideration like RIVERLAKE HYDRAULIC, the single-acting cylinder has a clear rest position in the event of a power failure.
  • Resets to a known position as a known rest position also make for a calmer reset sequence.
  • Consumes less air because air is used in one direction only, there is less consumption compared to a double-acting cylinder; this gives the best efficiency and lower operating cost
  • Easier to control as it is relatively simple.

Applications for Single Acting Hollow Plunger Hydraulic Cylinders

  • Single-acting Single Acting Hollow Plunger Hydraulic Cylinders are ideal where motorized motion is required in one direction only like the RIVERLAKE HYDRAULIC
  • Clamping where a workpiece can be held in position by jaws functioned by the cylinder; a process, such as drilling, can then be accepted out before the spring retracts the jaws
  • Positioning where a workpiece, can be pushed or pulled into place before the spring acts and readies the cylinder for the next workpiece
  • Punching is where the thrust from a single-acting cylinder can be used to punch an object; the spring then retracts the punch ready for the next object.

Differences between Single Acting Hollow Plunger Hydraulic Cylinders and Double Acting Hydraulic Cylinders

                            When comparing single-acting and double-acting hydraulic cylinders, the most visible change is the number of couplers or connection ports. A single-acting hydraulic cylinder comprises just one port. This is where the hydraulic fluid arrives and forces the plunger out in one direction. A double-acting cylinder comprises two ports. One for the hydraulic fluid to arrive and extend the plunger, and the other for withdrawing the cylinder. The plunger in a single-acting hydraulic cylinder spreads when hydraulic fluid under high pressure is driven into the cylinder. When it is time to withdraw the cylinder, depending upon the cylinder design, the needle can be retracted using a return spring, by the load, or by gravity.

                              In a double-acting Hollow Plunger hydraulic cylinder, the plunger retracts when hydraulic fluid is driven under high pressure into the top port, compelling the plunger back to its original position. This can be done quickly, or very gradually with precise control.

Which is better – Single Acting Hollow Plunger Hydraulic Cylinders and Double Acting Hydraulic Cylinders

                                     The single-acting Hollow Plunger Hydraulic cylinder is simpler than its double-acting counterpart. With rarer components, there is much less which can go wrong. Single-acting cylinders are perfect for straightforward jobs particularly when the fast or controlled withdrawal is not essential. Double-acting hydraulic cylinders have the capability to pump hydraulic fluid to both sides of the plunger. Connection ports located near both ends allow the piston rod to move both forward and backward. The additional port also allows more control of the plunger during withdrawal and ensures it always returns back to its starting point. The faster and expectable retraction of double-acting cylinders makes them the better choice for projects needing repeatable accuracy. A double-acting cylinder is really used in more applications than a single-acting cylinder. There are numerous reasons for this, dealing with the advantage of double protection and drive versus single. However, if you have the optimal choice between a single and double-acting cylinder, here are a few reasons why you should always select the double cylinder:

Additional fluid

                                 A double hydraulic cylinder clearly contains more fluid than a single cylinder. This makes it calmer to operate machinery with a double cylinder, and also makes it cooler to control the movement of the system attached to the hydraulic cylinder.

Extra force

                                   A single-cylinder yields force in one direction only. A double cylinder yields force both as it travels out and as it travels in. This makes a higher force level that is more reliable and calmer to control than a single-force system.

Better control

                              The more power your cylinder can output, the additional control you have over the system. With a double cylinder system, you do not have to worry about as many slips and problems with the system. The force remains the same throughout the use of the cylinder and it is calmer to control what you are doing, whether you are controlling a crane or hovering it, or lowering the level of a platform.

Higher work output

                                 When a hydraulic cylinder contains much more fluid, it spreads more energy during work output. This makes the process of the unit more precise and helps improve the general energy efficiency of the unit. It is also quicker to operate a higher work output cylinder, making the procedure of using the hydraulic unit very easier totally.

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