Replacement single-acting telescopic hydraulic cylinders from Hydraulic Cylinders, Inc. are low-maintenance, cost-effective options to keep your equipment running smoothly. Designed with simplicity in mind, single-acting telescopic cylinders extend using hydraulic pressure but retract using gravity or a load’s weight. They take up less space than double-acting cylinders, cost less upfront, are straightforward to repair, and deliver reliable performances in most conditions.