Rodless Cylinder Structure
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Rodless Cylinder is composed of a cylinder, an end cover, a piston, a piston rod and a seal. The internal structure of the rodless cylinder principle is as follows:
1. Cylinder The inner diameter of the cylinder represents the size of the cylinder output force. The piston should slide back and forth smoothly in the cylinder, and the surface roughness of the inner surface of the cylinder should reach Ra0.8um. For steel tube cylinders, the inner surface should also be plated with hard chrome to reduce friction resistance and wear and prevent rust. In addition to high-carbon steel pipes, the cylinder material is also made of high-strength aluminum alloy and brass. Rodless cylinders use stainless steel pipes. For cylinders with magnetic switches or cylinders used in corrosion-resistant environments, the cylinder should be made of stainless steel, aluminum alloy or brass. A combined sealing ring is used on the piston of the rodless cylinder to achieve bidirectional sealing, and the piston and piston rod are connected by riveting without nuts.
2. End cover The end cover is provided with an inlet and outlet port, and some are also provided with a buffer mechanism in the end cover. The rod side end cap is equipped with a sealing ring and a dust ring to prevent air leakage from the piston rod and prevent external dust from mixing into the cylinder. The rod side end cap is equipped with a guide sleeve to improve the guiding accuracy of the cylinder, bear a small amount of lateral load on the piston rod, reduce the amount of downward bending when the piston rod is extended, and extend the service life of the cylinder. The guide sleeve is usually made of sintered oil-containing alloy and forward-leaning copper castings. In the past, the end cap was often made of forgeable cast iron. In order to reduce weight and prevent rust, aluminum alloy die-casting is often used. Micro cylinders are made of brass.
