Hydraulic Cylinders Home › Hydraulic Cylinders Cylinders - Single Acting Spring Return Cylinders - Single Acting Low Profile Cylinders - Single Acting Center Hole Cylinders - Single Acting Load Return Cylinders - Single Acting Threaded End Cylinders - Single Acting Locking Collar Cylinders - Double Acting High Cycle Cylinders - Double Acting Low Cycle Cylinders - Double Acting Center Hole There are many types of Hydraulic Cylinders with many different purposes. High Tonnage cylinders can be used to lift bridges, buildings and structures weighing thousands of pounds. There are several important considerations when selecting a hydraulic cylinder. What is the tonnage, stroke length, does it need to push, pull or both, is it a stationary application like a shop press or mobile, is there a speed requirement, are there size constraints, is the load evenly balanced, what is the frequency of use and many more. If you need any help or advice the professionals at Ohio Power Tool will help you select the Cylinder and match it with the correct pump.