What is a long-stroke sliding table cylinder

The long-stroke sliding table cylinder can also be called rodless cylinder, mainly because the rod cylinder occupies a large installation space and has a large deflection when used for a long time, which affects the position accuracy and stability of the cylinder.

Therefore, rodless cylinders are often used in situations with long strokes. The rodless cylinder does not extend out of the piston rod, and its position output is mainly in the form of sliding table.

Principle of sliding table cylinder:

A cylindrical metal part that guides the piston to do linear reciprocating motion in a cylinder. Air expands in the engine cylinder, converting heat energy into mechanical energy; The gas is compressed by the piston in the compressor cylinder to increase the pressure.

The casing of a turbine, rotary piston engine, etc. Also commonly referred to as "cylinder". Application fields of cylinder: printing (tension control), semiconductor (spot welding machine, chip grinding), automation control, robot, etc.

Extended data:

Cylinder structure:

The cylinder body is composed of cylinder body, end cover, piston, piston rod and sealing element. The end cover of the end cover is provided with an air inlet and an air outlet, and some of them are also provided with a buffer mechanism in the end cover.

The end cover on the rod side is provided with a sealing ring and a dustproof ring to prevent air from leaking from the piston rod and prevent external dust from mixing into the cylinder. The guide sleeve is arranged on the rod side end cover to improve the guiding accuracy of the cylinder, bear a small amount of lateral load of the piston rod, reduce the downward bending of the piston rod when it is extended, and prolong the service life of the cylinder.

Guide sleeves are usually made of sintered oil-bearing alloy and inclined copper castings. In the past, malleable cast iron was usually used for end caps. In order to reduce weight and prevent rust, aluminum alloy is often used for die casting, and brass is used for micro cylinders.

Piston piston is a pressure-bearing part in the cylinder. In order to prevent the left cavity and the right cavity of the piston from forming a channel with each other, a piston sealing ring is provided. The wear ring on the piston can improve the guiding performance of the cylinder, reduce the wear of the piston sealing ring and reduce the friction resistance.

Wear-resistant ring length is made of polyurethane, PTFE, synthetic resin tape, etc. The width of the piston is determined by the size of the sealing ring and the necessary length of the sliding part. The sliding part is too short, which is easy to cause early wear and seizure.

The piston is usually made of aluminum alloy and cast iron, and the piston of small cylinder is made of brass. Piston rod The piston rod is the most important stress component in the cylinder. High carbon steel, hard chromium plating or stainless steel are usually used to prevent corrosion and improve the wear resistance of sealing rings.