Drukcylinders

Drukcylinders, or pressure cylinders, are linear actuators that convert fluid pressure into mechanical force and motion. They are widely used in industrial automation to provide controlled, linear movement.

There are two main categories: hydraulic cylinders, which use incompressible fluid and generate high force; and pneumatic cylinders, which use compressed air and are faster and cleaner but produce less force per area. Cylinders can be single-acting, where pressure moves only one way and a spring returns, or double-acting, using pressure in both directions.

Construction: a cylinder barrel houses a piston attached to a piston rod. Seals maintain pressure and prevent leakage. End caps seal the ends; ports allow fluid to enter and exit. Cylinder types include tie-rod and welded designs; some are telescoping for extended strokes. Common materials include steel, stainless steel, and aluminum; chrome plating reduces wear.

Operation: pressurized fluid is introduced through ports, driving the piston. In pneumatic cylinders, air flow is controlled by valves and speed is regulated with flow controls. In hydraulic cylinders, hydraulic fluid allows for precise force and position control, but requires stronger filtration and leakage management.

Applications: automation lines, clamping, forming, lifting, and robotics. Advantages include linear motion with predictable force, simple control with valve systems, and wide operating ranges. Limitations include energy efficiency concerns, potential leaks in hydraulics, and the need for external lubrication and maintenance.

Maintenance and safety: keep fluids clean, replace seals, and protect against contamination. Ensure correct mounting and end-stop protection. Follow manufacturer guidelines and relevant standards for installation and operation.

See also: hydraulic cylinder, pneumatic cylinder, actuators.