CY3R20-150: SMC Rodless Cylinder with Magnetic Coupling, the Space-Saving Motion Expert for Industrial Automation

Product Overview

The CY3R20-150 is a rodless cylinder with magnetic coupling produced by SMC Corporation of Japan, belonging to the CY3R series. This cylinder features a direct mounting design, with characteristics such as space-saving, high reliability, and fast response. It is widely used in industrial automation control systems, providing linear reciprocating motion solutions for various loads.

Core Product Advantages

1. Space-Saving Design Utilizes a rodless structure, saving approximately 50% of the axial installation space compared to traditional cylinders. It is particularly suitable for automation equipment with limited space. With a bore size of 20mm and a stroke of 150mm, it features a compact overall size, facilitating integration into various equipment.
2. High Reliability Bearing performance is improved compared to the CY1 series, with the wear ring length increased by 70%, reducing sliding resistance and extending service life. The use of special resin wear rings improves lubrication performance, significantly enhancing durability.
3. Fast Response Features a piston speed range of 50-500 mm/s, high operating frequency, and fast response speed, meeting the demands of high-cycle production. The adjustable cushioning device ensures smooth, shock-free reversal, reducing equipment vibration and noise.
4. Easy Installation The direct mounting design allows for direct load mounting without the need for additional guide mechanisms. Installation dimensions are identical to the CY1 series, facilitating easy replacement and upgrades. The port uses standard Rc1/8 threads for convenient connection.

Technical Parameters

Parameter Item	Specification Value	Explanation
Series​	CY3R Series	Product Series
Bore Size​	20 mm	Cylinder Inner Diameter
Stroke​	150 mm	Piston Travel Distance
Operating Pressure Range​	0.16 ~ 0.7 MPa	Working Pressure Range
Maximum Operating Pressure​	0.7 MPa	Max. Working Pressure
Proof Pressure​	1.05 MPa	Pressure Resistance
Working Fluid​	Air	Operating Medium
Ambient Temperature​	-10 ~ 60 °C	Operating Temperature Range
Fluid Temperature​	-10 ~ 60 °C	Medium Temperature Range
Piston Speed​	50 ~ 500 mm/s	Motion Speed Range
Port Size​	Rc1/8	Air Port Interface
Lubrication​	Non-lubricated	Lubrication Type
Operation Type​	Double-acting	Working Principle
Cushioning Type​	Rubber Cushion	Cushioning Form
Holding Force​	363 N	Magnetic Coupling Force
Minimum Operating Pressure​	0.16 MPa	Minimum Start-up Pressure

Model Number Breakdown

• CY3R: SMC Rodless Cylinder with Magnetic Coupling Series Code
• 20: Bore Size 20mm
• 150: Stroke 150mm

Working Principle

The CY3R20-150 operates on the principle of a rodless cylinder with magnetic coupling. Permanent magnets are installed on the internal piston and the external slider. When compressed air enters the cylinder and pushes the piston, the external slider is synchronously driven via magnetic coupling force, achieving linear reciprocating motion for the load. The absence of a piston rod eliminates wear and leakage issues associated with rod seals.

Workflow:

1. Compressed air enters the rodless chamber of the cylinder from one end.
2. Air pressure pushes the piston towards the other end.
3. The permanent magnet on the piston drives the external slider synchronously via magnetic coupling force.
4. The external slider drives the load to complete the extension stroke.
5. Compressed air enters from the other end, causing the piston to move in reverse.
6. The load completes the retraction stroke.
7. Reciprocating motion is achieved by controlling the air inlet and exhaust.

Typical Application Scenarios

1. Industrial Automation Production Lines In automated production lines for automotive manufacturing, electronic device production, etc., used for controlling actions like material pushing, sorting, and positioning. It saves installation space and improves production efficiency.
2. Packaging Machinery For controlling actions like material conveying, sorting, and palletizing in packaging machines. The rodless cylinder enables linear motion in compact spaces, ensuring precision and stability in the production process.
3. Robotics Serves as a robot end effector, working in conjunction with robotic arms to grip, position, and place workpieces, improving the robot’s motion accuracy and efficiency.
4. Precision Manufacturing Equipment In equipment for semiconductor manufacturing, precision machining, etc., used to control the motion accuracy of actuators, ensuring stability and repeatability in the machining process, thereby improving product quality.

Installation and Usage Precautions

1. Installation Requirements The cylinder should be installed on a flat, stable base to ensure stable operation. Before installation, check that the air supply pressure meets the 0.16~0.7 MPa specification and ensure the air supply is clean. Pay attention to the cylinder’s mounting direction during installation, ensuring the load movement direction aligns with the cylinder axis.
2. Operating Environment The operating temperature range is -10 ~ 60°C. Avoid use in extremely high or low-temperature environments. Maintain relative humidity within an appropriate range. The working medium should be filtered through a 40μm or larger filter element before use.
3. Piping Connection Before piping, thoroughly blow or clean out cutting powder, cutting oil, dust, etc., from inside the pipes. When using threaded connections, prevent chips and sealing tape fragments from entering the piping. When using sealing tape, leave 1.5-2 pitch lengths at the thread end without tape.
4. Load Connection The load should be connected via a floating joint or a ball joint to avoid eccentric or lateral loads. The load movement direction should align with the cylinder axis to prevent binding, which could damage the cylinder.
5. Speed Adjustment Adjust the cylinder speed using a speed control valve. The throttle valve should be gradually opened from the fully closed position, slowly adjusting from low speed to the desired speed. An exhaust throttle method is generally used, creating back pressure for more stable motion.
6. Cushion Adjustment For cylinders with cushions, adjust the cushion valve from a small to a larger setting based on load and speed to prevent rebound. Avoid over-tightening (jamming) the cushion during adjustment, as this can cause poor cushioning or damage seals.
7. Regular Maintenance Regularly inspect the cylinder’s connecting piping and valves for leaks. Periodically clean the cylinder surface. Regularly check the cylinder’s operational performance. Before reuse after prolonged shutdown, perform a venting/flushing operation.
8. Safe Operation Ensure proper grounding before operation. Avoid contact with moving parts. In case of failure, stop immediately for professional repair. Depressurize before installation. Strictly prohibit use beyond rated pressure, temperature, and medium ranges.

Concluding Summary

The CY3R20-150 rodless cylinder with magnetic coupling is the “space-saving motion expert” in industrial automation. It perfectly combines space-saving design, high reliability, fast response, and direct mounting, providing efficient, reliable, and compact linear motion solutions for various industrial applications.

Choosing the CY3R20-150 means choosing to drive your automation system towards higher efficiency with high reliability and high stability!

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