Telescopic hydraulic cylinders, also known as multi-stage cylinders, are linear actuators made of stacked sleeves on tubular rods. Four to five sleeves of shrinking diameters are stacked inside of one another. Hydraulic pressure can expand the largest sleeve (the main or barrel). Once the barrel has completed its full stroke, the following sleeve (called a stage) starts extending. This procedure repeats until the plunger, the cylinder’s final stage. The moment the cylinder’s pressure is released, the force of the load forces the oil out of the system, and the cylinder retracts. Read More…
Leading Manufacturers
Peninsular Cylinder Co.
Roseville, MI | 800-526-7968Peninsular Cylinder Co. designs and manufactures a complete line of pneumatic and hydraulic actuators for industrial automation, including cylinders, powered slides, rotary actuators, multi-motion actuators, grippers, escapements and sensors. Actuators may be used independently or in a modular fashion. Call us today for more information!
JARP Industries, Inc.
Schofield, WI | 715-359-4241Since 1959, JARP has produced superior hydraulic cylinders and swivels; satisfying each customer along the way. Our cylinder and swivel manufacturing process includes the highest quality components to assure dependability for higher loads and pressures, up to 5,000 psi. Call JARP today for quick results!
Kiefer Tool & Mold, Inc.
East Liverpool, OH | 216-251-0076Kiefer Tool & Mold Inc began in 1965 with a mindset of providing services and repairs to industrial equipment, press components, and presses. We strive to provide our customers with the best service and quality.
Farnsworth Engineering Company
East Liverpool, OH | 330-385-1745Farnsworth Engineering is the only official manufacturer of Marion hydraulic cylinders, M-Line. Farnsworth also builds replacement cylinders for Glenco and Perfection models.Farnsworth Engineering designs custom single-acting, double-acting, and telescopic hydraulic cylinders and hydraulic systems to meet your specific requirements. Custom mounts are also available. Contact us for a quote today!
General Engineering Company
Abingdon, VA | 276-628-6068Dedicated to product performance under pressure, General Engineering specializes in custom engineered & manufactured hydraulic cylinders for the most demanding environments, such as mining & construction. Single Stage Hydraulic Cylinders, Multistage Telescopic Cylinders & Replacement Cylinders to exacting ISO standards. Small & large bore repair whether the cylinder is ours or not. Since 1948.
Types of Telescopic Hydraulic Cylinders
Telescopic hydraulic cylinders are available in two varieties: single-acting and double-acting.
Single-Acting Telescopic Cylinders
In single-acting cylinders, retraction is initiated by gravity or external force. Single-acting telescopic cylinders are designed to extend with hydraulic pressure and retract with an outside force. They provide dependable, long-lasting performance and often have a wider outer diameter than rod cylinders. Single-acting telescopic cylinders are prevalent on dump trucks, platform trucks, and trailers.
Double-Acting Telescopic Cylinders
Double-acting telescopic cylinders need hydraulic pressure to both extend and retract. They work well when horizontally mounted cylinders or other obstacles prevent gravity from assisting. Double-acting cylinders are frequently employed in transfer trailers, waste trucks, and non-critical positioning applications.
Combination Telescopic Hydraulic Cylinders
Combination telescopic cylinders can be single-acting or double-acting. This means they’ll use hydraulic pressure for a portion of the stroke, then retract via gravity or external force. These multi-stage telescopic cylinders are used for heavy-duty applications like huge mobile drilling rigs. Hydraulic power is used more often than pneumatic telescopic cylinders when moving heavy weights. Telescopic hydraulic cylinders are used when extension starts from a small location because their collapsed length is 20 - 40% of the fully extended length. Combination telescopic cylinders use a longer working stroke than single-stage rod-style actuators. Dump trucks, elevators, and garbage trucks use telescopic cylinders.
Application Of Telescopic Cylinders
Pneumatic telescopic cylinders still exist, despite the prevalence of hydraulic power. Hydraulic power is more dependable for moving large weights. For example, a dump truck must tilt its load to a 60-degree angle to empty its contents. Hydraulic telescopic cylinders are a sensible option for this application.
Benefits Of Telescopic Hydraulic Cylinders
The telescopic hydraulic cylinder's small size, long stroke capacity, and ability to achieve specific angles are its main advantages. The hydraulic system is user-friendly and compact because it can retract.
