These cylinders consist of a succession of aluminum or steel tubes of progressively smaller diameters set within one another, which allows for significant extension. The collapsed length of the cylinder is usually 20% to 40% of the completely extended length. Of course, this depends on how many stages are included in the design. Read More…
Leading Manufacturers
Aggressive Hydraulics, Inc.
Cedar, MN | 866-406-4100Aggressive Hydraulics is a leading manufacturer and designer of custom hydraulic cylinders. Since our founding in 2002 we have assembled a team of experienced professionals and talented engineers to assist us in creating the best hydraulic cylinders on the market. The component parts we offer include cylinder heads, end caps, mounts, pistons, ports, valve blocks, and other related accessories. To learn more about our hydraulic cylinders, visit our website.
R & J Cylinder & Machine, Inc.
New Philadelphia, OH | 866-388-6744We are a machine shop that manufactures and reconditions custom hydraulic cylinders for the OEM market. We offer cnc machining services that include internal boring. Our fluid power applications include cylinders for the construction, mobile, marine and automotive lift industries. Fast service!
Perfection Hydraulics, Inc.
Evansville, IN | 800-624-4862Perfection Hydraulics manufactures, distributes, and services hydraulic cylinders, hydraulic pumps, hydraulic valves, hydraulic gear pumps, and other hydraulic components for heavy equipment. Our products provide you with the best value available for today’s dynamic industry. With our reputation for quality and reliability, you can rely on us for your heavy duty hydraulics needs.
CROSS Manufacturing, Inc.
Lewis, KS | 913-433-7777CROSS Manufacturing manufactures high quality custom welded hydraulic cylinders, as well as standard, AG hydraulic cylinders for diverse markets. CROSS also provides a complete line of hydraulic components, including valves, pumps, motors, filters and adapters. You can count on us to provide you with components that are durable, dependable, and made in the USA. For more details on our products and services, contact CROSS today!
Telescopic Hydraulic Cylinders - Cylinders & Valves, Inc.Though telescopic hydraulic cylinders may be custom designed for optimum extension and other features, the maximum number of stages is usually restricted to six. The largest, outermost sleeve is referred to as the barrel or the main while the inner sleeves are called the stages, and the smallest is often referred to as the plunger or piston rod.
Telescopic hydraulic cylinders are used in a variety of applications, including construction equipment like dump trucks, large capacity marine cranes, and oil field drilling rigs. In these demanding settings, the cylinders are usually used to raise and lower pieces of equipment as with the dumping action of the dump truck or to erect the mast of a mobile drilling rig. Generally, the cylinders are anchored in machinery by pivot mounts welded to the body of the barrel as well as the end of the piston rod, and can tolerate hydraulic pressure at a maximum of 2000-3000 psi.
No matter the application, it is very important that telescopic hydraulic cylinders be used in a way that avoids side loads from pushing on the actuator as this can cause excessive wear and sometimes very serious damage. At full extension, they are even more susceptible to side forces. Telescopic hydraulic cylinders should always be viewed as force generating devices, never as stabilizing devices.
There are many manufacturers of telescopic hydraulic cylinders to choose from and many offer custom design options to suit specific applications. Double acting cylinders as well as single acting cylinders are also an option when it comes to these cylinders. Double acting cylinders are extended and retracted by use hydraulic pressure in both directions. Some even use a combination of both single and double acting technology, where the piston is double acting and the rest of the stages are single acting.
Telescopic cylinders are often used in and considered in regards to heavy machinery, but there are smaller bore designs used in lighter applications as well. There are a range of specific designs, features, and capabilities that can be considered and employed when it comes to telescopic hydraulic cylinders.
