Double Acting Hydraulic Cylinders

A reliable source for Hydraulic Cylinder information and leading Hydraulic Cylinder Companies & Manufacturers.

Like all hydraulic cylinders, these mechanisms are designed to generate linear force and motion. Read Moreā€¦

Double Acting Hydraulic Cylinders Double Acting Hydraulic Cylinders

Double acting hydraulic cylinders are bidirectional linear actuation devices that convert the hydraulic energy of pressurized fluids into useful mechanical energy.

Leading Manufacturers

Strongsville, OH  |  440-238-7343

Our company name is not a misnomer-we have been manufacturing cylinders and valves since 1958. We manufacture air and hydraulic cylinders plus their associated valves and replacement parts.

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Cylinders & Valves, Inc. $$$

Cincinnati, OH  |  888-651-5712

Since 1967, Hydrotech has provided industries with innovative solutions for their fluid power needs. Our listing of hydraulic cylinders are manufactured by Bosch Rexroth, Hanna and Cross Hydraulics. For more information call our experienced team of technicians and sales support!

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Hydrotech, Inc. $$$

Newark, NJ  |  800-633-8234

We take pride in saying that we are a family owned business. Our company has over 70 years of manufacturing experience. We will provide all of your needs and you can count on us to get the job done correctly.

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Metro Hydraulic Jack Co. $$$

Columbus, OH  |  800-242-4424

Sales, service and rental for all major brands of hydraulic pumps and other air, electric and hydraulic equipment. Hydraulic cylinder offerings include single- and double-acting, low profile, locking collar, high tonnage, and aluminum. Highly skilled at matching tool to application for hydraulic pumps, hydraulic cylinders, and more.

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Ohio Power Tool $$$

Indianapolis, IN  |  800-875-5196

We are the ones to turn to for hydraulic equipment sales, custom cylinders, custom motor systems, custom valves, hydraulic repair and emergency replacement. We sell and service fluid power products and parts from dozens of key manufacturers, as well as providing systems engineering, emergency replacement, and repair services. Progressive Power and Control is a respected, family-owned company.

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Progressive Power and Control $$$
placeholder image Cylinders & Valves, Inc. Hydrotech, Inc. Metro Hydraulic Jack Co. Ohio Power Tool Progressive Power and Control

Double acting hydraulic cylinders work by admitting and removing pressurized oil, ether, mineral or water composites from an enclosed space. The pressure acts upon a piston with an attached rod that extends and retracts according to the amount of fluid in the chamber. Even a small motor with pressurized fluid can create tremendous work force. The popularity of hydraulic cylinders in agricultural, automotive, power generation, oil and gas, construction, demolition, material handling, aerospace and transport industries among others can be attributed to the significant energy gains they allow.

Double acting hydraulic cylinders can lift, turn, tilt, press, steer, pull and push heavy machine components and attached loads along any linear plane making them useful in cranes, lifts and braking mechanisms alike. While the length and plane of these hydraulic cylinders are fixed, double action offers powered motion for both extension and retraction whereas single action cylinders provide motion in only one direction. Although this requires a larger reservoir of compressed fluids, double acting hydraulic cylinders are often preferred over their unidirectional counterparts as they offer greater mechanical versatility, higher speed operation and tighter control.

While specific models may vary, the basic construction and function of double acting hydraulic cylinders remains relatively uniform. The main body of the cylinder is a round or rectangular tube shaped device enclosed at each end with a cap. This chamber houses and connects all other cylinder components. In one or both end caps there is a sealed hole through which the piston rod is extended and retracted as needed. A cold-rolled piece of metal or ceramic, the rod is attached to a piston within the main cylinder.

The hydraulic piston is a disc-like device that fits perpendicular to the cylinder walls, filling the cross-section of the barrel. This divides the cylinder into two separate compartments. Several seals are placed around the piston head and the rod opening to ensure that fluid does not leak in, out or from one side of the chamber to the other causing a loss of pressure and decreased functionality. In either end is an intake and exhaust valve where the fluid is introduced and removed.

When the pressurized fluid is forced into the section of the cylinder below the piston, the rod is extended while the inverse retracts it. The degree of piston rod extension and retraction correlates with the amount of fluid entered into the enclosed cylinder shaft. This length, known as the stroke, is one of the most important considerations when selecting the proper hydraulic cylinder for a given application. Additional concerns include body type and material, operating pressure, maximum working pressure, rod diameter and bore diameter.