Food-grade O-ring Imported O-rings are often used in hydraulics or cylinders. What is a special O-ring for cylinders? Cylinder is a kind of actuator that is widely used in pneumatic system. According to different conditions of use, its structure and shape also have various forms. The commonly used classification methods are as follows: 1. O ring manufactures
are selected according to the direction of the force of the compressed air on the end face of the piston (1) Single-acting cylinder: the movement of the cylinder in only one direction is pneumatic transmission, and the return of the piston depends on the spring force or its own weight and other external forces (2) Double-acting cylinder: the reciprocating motion of the double-acting cylinder is completely accomplished by compressed air. 2. According to the structural characteristics of the cylinder, select an O-ring seal (1) Piston-type cylinder O-ring (2) Film-type cylinder O Type ring (3) O-ring of telescopic cylinder 3. Select O-ring according to the installation form of the cylinder (1) Fixed cylinder: the cylinder is fixed on the body, there are lug type, flange type and flange type (2) Axle-pin cylinder: the cylinder body can swing at a certain angle around a fixed axis (3) Rotary cylinder: The cylinder is fixed on the main shaft of the machine tool and can rotate at high speed with the main shaft of the machine tool. This kind of cylinder is often used in the pneumatic chuck on the machine tool to realize the automatic clamping of the workpiece (4) Embedded cylinder: the cylinder is made in the fixture body 4. According to the function of the cylinder, select the O-ring seal (1) Ordinary cylinder: including Single-acting and double-acting cylinders are often used in occasions without special requirements (2) Buffer cylinder: one or both ends of the cylinder are provided with a buffer device to prevent and reduce the impact on the cylinder head when the piston moves to the end point (3 ) Pneumatic-hydraulic damping cylinder: the cylinder is connected in series with the hydraulic cylinder, which can control the movement speed of the cylinder piston and make it relatively stable (4) Swing cylinder: It is used in the occasions where the cylinder blade shaft is required to rotate around the axis within a certain angle, such as Clamp indexing, valve opening and closing, etc. (5) Impact cylinder: It is a high-energy cylinder that generates impact force with the high-speed movement of the piston rod, which can be used for stamping, cutting, etc. The working characteristics of the special O-ring for the cylinder inlet of the cylinder that make the piston rod extend out of different corresponding positions: the working characteristics of the cylinder refer to the static and dynamic characteristics of the output force of the cylinder, the change of the pressure in the cylinder, and the movement speed of the cylinder. Due to their many influencing factors, many problems are still under study, so only some brief introductions are made here. When using the special O-ring for imported cylinder, we must pay attention to its pressure characteristics, that is, the pressure change in the cylinder. The cylinder is usually divided into an intake cavity and an exhaust cavity by a piston. When compressed air is input into the intake cavity, the exhaust cavity is in an exhaust state. When the force formed by the pressure difference between the two chambers just overcomes various resistance loads, the piston starts to move. When there is no load, the pressure required to start the movement is only 0.02~0.05MPa. During the movement of the cylinder, the pressure in the intake chamber gradually increases to the air source, and the pressure in the exhaust chamber gradually decreases. The gas pressure in the intake and exhaust cavities changes with time, and the change curve is usually called the pressure characteristic curve of the cylinder. Company website: https://www.orksealing.com/
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