The principle of SMC rodless cylinder
The working principle of SMC type rodless cylinder is similar to that of ordinary cylinder, but only the external connection and seal form are different.
Both sides of the cylinder are hollow, and the permanent magnet in the piston rod drives another magnet (moving parts) outside the piston rod, which requires high cleanliness. The magnetic coupling rodless cylinder often needs to be removed and cleaned with gasoline, which is related to its working environment. Rodless cylinder fast, easy to optimize, automatic selection included.
There is a piston in CY3R series of SMC rodless cylinder, but without piston rod, the piston device is in the guide rail, the external load is connected to the piston, and the piston is driven by the air inlet.
The magnetic coupling type movement is the use of permanent magnet hollow piston rod driven by another magnet outside the movement of the piston rod to achieve, because of its high speed, high load and magnetic ring easily torn off is not so wide, the load characteristic curve of the size required to find the quality of quality and speed. Therefore, the mechanical use of more. 
The piston drives the moving body outside the cylinder by magnetic force to do synchronous movement. The working principle is that a set of permanent magnetic rings with high strength and magnetism are installed on the piston, and the magnetic field line is acted by another set of magnetic rings on the outer side of the cylinder through the thin wall cylinder, because the two sets of magnetic rings are opposite in magnetism and have strong suction force. When the piston is pushed by the air pressure in the cylinder, the magnetic ring sleeve outside the cylinder is moved together under the action of the magnetic force. The thrust of the cylinder piston must be adapted to the suction of the magnetic ring.
Actuating element in pneumatic system. It can be used for automobile door, subway and NC machine tool door opening and closing, mechanical manipulator coordinate positioning, centerless grinding machine parts transfer, combination machine feed device and automatic wire feeding, cloth cutting and electrostatic painting and so on
The working principle of SMC magnetic coupling rodless cylinder is that a set of permanent magnetic rings with high strength are installed on the piston, and the magnetic field line acts through another cylinder of magnetic rings in the outer cylinder of the thin-walled cylinder. Because the two sets of magnetic rings are opposite in magnetism, they have strong mutual attraction. When the piston is pushed by the air pressure in the cylinder, the piston moves, while the piston moves, the magnetic ring in the outer slider is affected by the magnetic loop magnetic field line on the piston, so that the synchronous movement is carried out. The cylinder piston thrust must adapt to the internal and external magnetic suction, when using high pressure or overload, causing the piston thrust is too large, when the magnetic attraction between the magnetic ring to maintain, inside and outside the cylinder will be disengaged, abnormal, jargon called miss.