CD85Y16-25S-B: SMC Standard Cylinder, the Reliable Execution Expert for Industrial Automation

CD85Y16-25S-B is a standard cylinder produced by Japan’s SMC Corporation, belonging to the C85 series. This cylinder adopts a single-rod, double-acting structure, featuring a compact design, high reliability, and convenient installation. It is widely used in industrial automation control systems, providing reliable linear drive solutions for various equipment.

Core Product Advantages

1. High Reliability Design Utilizes high-quality materials and precision machining processes, improving the wear resistance of the rod cover and U-shaped bearing, significantly extending the cylinder’s service life, and ensuring stability and reliability during long-term continuous operation.
2. Installation Convenience Employs a double clevis mounting method, where tools can be directly applied to the cover during installation, greatly reducing installation time and improving work efficiency. Simultaneously, the optimized design of the mounting bracket ensures stable cylinder operation under various installation conditions.
3. Excellent Cushioning Performance Equipped with an air cushioning device. As the piston approaches the end of the stroke, the cushion absorbs impact energy, decelerating the piston until it stops, preventing or mitigating piston impact on the cylinder heads, thereby extending equipment service life.

Technical Specifications

Specification Item	Specification Value	Description
Series​	C85 Series	Product series
Bore Size​	16 mm	Cylinder internal diameter
Stroke​	25 mm	Piston stroke
Action Type​	Double-acting, Single-rod	Bi-directional drive
Operating Pressure Range​	0.06~0.7 MPa	Working pressure range
Maximum Operating Pressure​	0.7 MPa	Maximum working pressure
Proof Pressure​	1.0 MPa	Pressure withstand capability
Operating Fluid​	Air	Working medium
Ambient Temperature​	-10~70 °C	Working temperature range
Piston Speed​	50~750 mm/s	Speed adjustment range
Port Size​	M5 × 0.8	Port thread
Lubrication Method​	Oil-Free Type	Lubrication method
Cushioning Method​	Air Cushioning	Cushioning type
Mounting Style​	Double Clevis	Mounting configuration
Stroke Length Tolerance​	+1.00 mm	Positioning accuracy

Model Number Breakdown

• CD85:​ SMC Standard Cylinder Series Code
• Y:​ Cylinder head form (specific meaning refers to product manual)
• 16:​ Bore size 16mm
• 25:​ Stroke 25mm
• S:​ Cushioning method (Air cushioning)
• B:​ Magnetic switch mounting method (Band mounting type)

Working Principle

The CD85Y16-25S-B adopts a double-acting cylinder structure. When compressed air enters the rodless side, air pressure pushes the piston, generating thrust for extension. When compressed air enters the rod side, air pressure pushes the piston to retract. The direction of compressed air flow is controlled by a solenoid valve, achieving reciprocating motion of the cylinder. The cushioning device absorbs impact energy via a cushion as the piston nears the stroke end, decelerating the piston until it stops.

Workflow:

1. Compressed air, controlled by a solenoid valve, enters the cylinder.
2. Air pressure pushes the piston rod to extend or retract.
3. The piston rod drives the actuator to perform linear motion.
4. Smooth stopping is achieved via the cushioning device.
5. Position signals are detected by magnetic switches and fed back to the control system.

Typical Application Scenarios

1. Industrial Automation Production Lines Used in automated production lines such as automotive manufacturing and electronic equipment assembly for pushing, positioning, clamping, and handling workpieces, improving production efficiency and product quality. Its compact design is particularly suitable for applications in space-constrained automation equipment.
2. Packaging Machinery Controls material conveying, sorting, and marking operations in packaging machines, achieving flexible gripping and positioning of different materials through cylinders, ensuring precision and stability in the production process.
3. Robotics Technology Serves as an end-effector for robots, working with robotic arms to grip, position, and place workpieces, achieving flexible grasping and anti-collision functions through precise pressure control.
4. Precision Manufacturing Equipment Used in equipment for semiconductor manufacturing and precision machining to control the motion accuracy of pneumatic actuators, ensuring process stability and repeatability, 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 0.06~0.7 MPa requirement and ensure the air source is clean. During installation, ensure the piston rod does not bear eccentric or lateral loads; align the load’s direction of motion with the piston rod axis.
2. Operating Environment The operating temperature range is -10~70°C; avoid use in high or low-temperature environments. Maintain relative humidity within an appropriate range to prevent moisture from affecting equipment lifespan. The operating medium should be filtered through a 40μm or finer filter before use.
3. Piping Connection Before connecting pipes, thoroughly blow or clean out cutting powder, cutting oil, and dust inside the pipes. For threaded pipe and fitting connections, prevent chips from the pipe threads and fragments of sealing tape from entering the pipe interior. When using sealing tape, leave 1.5-2 thread pitches uncovered at the end of the threads.
4. Speed Adjustment Adjust the extension and retraction speed of the piston rod using the flow control valves (or external speed controllers) at the cylinder ports to achieve smooth motion. The recommended speed range is 50~750 mm/s.
5. Regular Maintenance It is recommended to regularly inspect the cylinder’s connecting pipes and valves for leaks. Clean the cylinder surface regularly. Periodically check the cylinder’s operational performance to ensure long-term stable operation. When restarting after prolonged shutdown, perform an air-flushing operation first.
6. Safe Operation Ensure the equipment is properly grounded before operation. Avoid contact with moving parts during operation. In case of equipment malfunction, stop immediately and have it repaired by professionals. Always depressurize before installation. Strictly avoid using the product beyond its rated pressure, temperature, and medium specifications.

Conclusion

The CD85Y16-25S-B standard cylinder is the “Reliable Execution Expert” in the field of industrial automation. It perfectly combines high reliability, convenient installation, and excellent cushioning performance, providing an efficient, reliable, and precise linear drive solution for various industrial applications.

Choosing the CD85Y16-25S-B means choosing to drive your automation system towards higher efficiency with high reliability and high stability!

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