Hydraulic Cylinder
A hydraulic cylinder, also known as a linear hydraulic motor or hydraulic ram, is a mechanical actuator that converts pressurized hydraulic fluid energy into linear force and motion via a piston moving within a barrel. It drives heavy loads for lifting, pushing, pulling, and precise positioning in industrial equipment.
In manufacturing and shop-floor maintenance, hydraulic cylinders are critical for driving heavy loads in equipment like presses, elevators, and injection molders. They are tracked in CMMS systems by monitoring stroke time, pressure spikes, and seal leakage to schedule preventive maintenance. Reliability hinges on fluid cleanliness, correct fluid, appropriate sealing, and proper system design. The pump is the most critical component, followed by the cylinder, with valve wear less significant. Direct pump control eliminates throttle losses, reducing energy consumption and noise.
How is force output calculated?
Force output is calculated as F = P × A, where P is fluid pressure and A is piston area, following Pascal’s principle.
What determines cylinder stroke speed?
Stroke speed is determined by v = Q / A, where Q is flow rate and A is piston area; velocity is inversely proportional to area.
What is the typical operational pressure limit?
Standard designs handle 350–400 bar, with special units reaching 600 bar+.