A single acting hydraulic cylinder is an efficient, effective option for lifting or pushing loads. These cylinders only require hydraulics to move in one direction or to push the rod out of the cylinder body. The weight of the equipment or the load allows the rod to retract and pushes the hydraulic fluid back through the port and into the system.

With only one port and one hose rather than the dual system required on a double acting cylinder where power is used to control the movement of the cylinder both in and out, there is less maintenance on these cylinders. However, it is still critical to correctly maintain a single acting hydraulic cylinder to extend the life cycle of the cylinder and to reduce the risk of component failure.

Choose the Right Cylinder

While this may seem basic, choosing the incorrect size and capacity of any type of cylinder is the most common cause of early wear and failure. It is essential to consider maximum load possible when designing a custom cylinder or choosing an off-the-shelf model.
Choosing a custom designed cylinder may be more expensive than an off-the-shelf model, but it can be built to work easily under the load, eliminating the cost of a replacement in a few years.

Follow a Maintenance Schedule

Visual inspection of the cylinder before and after use is a simple, short process. Look for any signs of leaks around the port, at the hose or around the seal. Check to make sure the seal in not damaged, and look for any signs of rust, corrosion, pitting or damage to the rod.

Make sure the hydraulic fluid is the correct type for the application and the use, and that the fluid is changed as needed. This is an essential part of maintaining the single acting hydraulic cylinder, ensuring the oil is free from moisture, contaminants, and debris.