Working principle of rodless cylinder

Rodless cylinder The working principle of the rodless cylinder is the same as that of the ordinary cylinder, but the external connection and sealing forms are different.





As shown in the picture above, there is a piston in the rodless cylinder, but there is no piston rod. The piston is installed in the guide rail, the external load is connected to the piston, and the actuation depends on the air intake.



There is a groove in the axial direction of the cylinder tube, and the piston and Shangzhi move in the upper part of the groove. In order to prevent leakage and dustproof requirements, stainless steel sealing tapes and dustproof stainless steel tapes are used at the opening to be fixed on the cylinder heads at both ends. The piston frame passes through the groove to connect the piston and Shangzhi as a whole. The piston is connected to the Shangzhi and drives the actuator fixed on the Shangzhi to achieve reciprocating motion.

Rodless cylinders generally have mechanical contact type and magnetic coupling type.

1. Magnetic coupling type

Save space. The installation space of rod cylinder is about 2.2L (stroke), and that of rodless cylinder is about 1.2L. The stroke-bore ratio can reach 50 to 200, and the positioning accuracy is high

The pressure areas on both sides of the piston are equal and have the same thrust, which is beneficial to improving positioning accuracy and making long strokes possible.

The magnetic rodless cylinder is light in weight, has a simple structure, takes up little space, and has no external leakage. However, when the limiter stops the load, the piston may become detached from the moving body.

Magnetic coupling rodless cylinders include CY1B (basic type), CY1R (direct mounting type), CY1S (sliding bearing type), CY1L (ball bearing type), CY1H (high-precision guide rail type) series



2. Mechanical contact type

The mechanical rodless cylinder has a large load-bearing capacity and torque resistance, and may have slight leakage.

Mechanically coupled rodless cylinders include MY1B (basic type), MY1M (sliding guide type), MY1C (cam follower guide type), MY1HT (high-rigidity, high-precision guide type dual-axis), MY1H (high-precision guide type single-axis ) series of products.