When it comes to construction machinery and other heavy-duty equipment, sturdy, dependable parts are a must. That's why so many different pieces of equipment and machines contain hydraulic cylinders. These vital components are crucial for many distinct purposes and can be found at numerous worksites and businesses as a result. Here are a few key facts about these parts, so you can make an informed decision when repairing or upgrading equipment. 

What Are Hydraulic Cylinders?

Hydraulic cylinders use pressurized liquid to generate a massive amount of force. This force is used to move a part known as a piston forward, which attaches to a piston rod. Both the piston and rod are situated within the cylinder barrel. On top of the barrel is a head, which keeps the generated pressure contained within the cylinder. The head is also sealed, and seals can be made from either rubber or cast iron, depending on the application.  

What Are the Different Types of Cylinders?

Single Acting

With single acting devices, the piston rod will only move in one direction. As fluid goes into the cylinder, the rod extends. When it's time for the rod to go back into the cylinder, a spring or some other device is required to retract it. These are commonly featured in dump trucks and excavators.

Double Acting

On the other hand, double acting cylinders move in both directions. Both the head and rod end can receive hydraulic fluid, which means they can extend and contract as needed. These cylinders are often used with devices that have components that can be both raised and lowered, like gates, medical equipment, and paint spraying tools.

Tie-Rod

This type of cylinder is most often used in industrial applications. Steel rods have threading, which keeps the end caps in place. Tie-rod cylinders are often used when there are concerns about hydraulic fluid leaking out, as the threaded ends form a tight seal. These are featured in the automotive industry and plastic machinery.

Welded Rod

Rods can also be welded to the end cap instead of being threaded in place. These cylinders are quite popular when it comes to mobile devices, but welding means they're more difficult to take apart once they're assembled. These are frequently used in construction equipment and civil engineering.

Telescopic

Telescopic cylinders can be either single or double acting. They contain nested tubes, each of which has a smaller diameter than the next for easy extension and retraction. These cylinders are vital for dump trucks, construction projects, and vehicle trailers.

When you're in the market for hydraulic cylinders or other crucial components, D & M Hydraulic Sales & Service has precisely what you need. Located in Waipahu, HI, these professionals approach every project with skills backed by more than 30 years of experience. They carry parts and components from the manufacturers you know and trust, and they're always willing to share their expertise with customers. Please call (808) 671-2420 for more information, or visit the website to view their inventory.