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DSNU Series Round Body Air Cylinder
The DSNU Series is a premium ISO 6432 standard round cylinder featuring a high-grade stainless steel barrel and corrosion-resistant end caps. Engineered for high-speed automation and long service life, its slim profile and versatile mounting options make it the ideal choice for precision tasks in tight industrial spaces.
- Overview
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Product Detailed Description：
The DSNU Series (ISO 6432 Mini Round Cylinder) is the industry benchmark for reliability and versatility. Crafted with a precision-drawn 304 stainless steel barrel, it offers exceptional resistance to wear and harsh environments. The cylinder’s design follows strict international standards, ensuring 1:1 dimensional compatibility for seamless replacement of existing DSNU setups.
Equipped with high-performance NBR seals and a chrome-plated steel piston rod, the DSNU series delivers smooth linear motion with minimal friction. It is available with both elastic cushioning (P) and adjustable pneumatic cushioning (PPV/PPS) to handle varying load impacts. Whether used in high-frequency packaging or delicate lab equipment, the DSNU series provides a robust, space-saving solution for modern automated systems.
Product Feature：
1. ISO 6432 Standard Compliance: Ensures global interchangeability and ease of integration.
2. Durable Stainless Steel Barrel: High-strength 304 stainless steel provides excellent corrosion resistance and low internal friction.
3. Slim-line Round Profile: Extremely compact design, perfect for narrow installation environments.
4. Self-Adjusting Cushioning (Optional): Features Festo-style PPS cushioning for maintenance-free operation and reduced impact noise.
5. Magnetic Ready: Built-in magnetic ring for position sensing with standard proximity switches.
6. High Temperature Resistance: Standard seals rated up to 80°C, with Viton (FKM) options available for extreme heat.
Specification：
Series |
DSNU (ISO 6432 Standard) |
Action |
Double Acting (Single Acting available) |
Bore Size |
Ø8, 10, 12, 16, 20, 25 mm |
Standard Strokes |
10mm to 500mm (Standard and Custom) |
Material |
Stainless Steel Barrel, Anodized Al-End Caps |
Operating Pressure Range |
1.0 ~ 10.0 bar (14.5 ~ 145 psi) |
Ambient Temp. |
-20°C to 80°C (-4°F to 176°F) |
Cushioning Type |
P: Elastic / PPV: Adjustable / PPS: Self-adjusting |
Mounting Type |
Nut (Standard), Clevis, Foot, Flange |
1. Electronic Component Assembly ：
The DSNU is widely used in SMT lines and PCB testing equipment. Its small bore sizes (8mm-16mm) allow for high-precision component ejection and placement. The stainless steel body ensures zero particulate contamination, which is critical in cleanroom environments where microchips and sensitive sensors are manufactured.
2. Food & Beverage Packaging：
Due to its corrosion-resistant stainless steel construction, the DSNU is the premier choice for "wash-down" areas in food processing. It drives diverting arms on conveyor belts and controls small-scale filling valves. It can withstand humidity and mild cleaning agents without rusting, ensuring food safety and reducing downtime.
3. Pharmaceutical & Lab Automation:
In diagnostic instruments and pill-packaging machines, the DSNU provides the gentle yet repeatable motion required for test tube handling and blister pack ejection. Its compact round body allows it to be tucked inside portable medical devices, providing reliable actuation in a very small footprint.
Installation and Usage：
1. Mounting Options: The DSNU is a "threaded-end" cylinder. You can mount it directly through a panel using the nose nut, or use mounting accessories like Foot Brackets (MS1) or Flange Plates (MF8). Ensure the mounting point is rigid to prevent vibration.
2. Piping and Filtration: Before connecting the air tubes, flush the lines with compressed air to remove debris. Always use a 40μm filter to protect the internal seals.
3. Speed Adjustment: To ensure the longevity of the seals and end caps, use one-way flow control valves (elbow speed controllers) to regulate the extension and retraction speed.
4. Cushioning Adjustment (PPV Models): For cylinders with adjustable cushioning, use a flat-head screwdriver to turn the cushioning screw. Adjust until the piston reaches the end-of-stroke without a loud "clack" but without stopping prematurely.
5. Rod Alignment: The piston rod must move in a perfectly straight line with the load. Any side-loading (lateral force) will cause the rod bushing to wear unevenly and lead to air leaks. Use a self-aligning rod coupler if misalignment is unavoidable.
FAQ
Q1.Is this DSNU cylinder a direct replacement for the Festo brand?
A1.Yes. Our DSNU series follows the ISO 6432 standard. Dimensions, mounting threads, and port sizes are 1:1 identical to the Festo DSNU series, making it a drop-in replacement.
Q2.What is the benefit of the stainless steel barrel?
A2. Unlike aluminum cylinders, the stainless steel barrel is highly resistant to scratches and corrosion. It provides a smoother internal surface for the piston seals, resulting in a longer lifespan and better performance in humid environments.
Q3.Does it come with the mounting nut?
A3.Yes, each DSNU cylinder includes the high-strength hex nut for the nose/neck thread as standard.
Q4.What is "PPS" cushioning?
A4. PPS stands for Pneumatic Positioning System (Self-adjusting cushioning). It automatically adapts to changes in load and speed, eliminating the need for manual adjustment screws.
Q5.Can I use this for high-speed applications?
A5. Absolutely. The lightweight piston and low-friction seals allow the DSNU to handle speeds up to 1500 mm/s, depending on the bore and air pressure.
Q6.Are the magnetic sensors included?
A6. The cylinder has a built-in magnet, but the sensors (auto-switches) are sold separately. It is compatible with standard C-slot or band-mount sensors.
Q7. What is the maximum stroke you can provide?
A7.While standard strokes are up to 200mm, we can manufacture custom strokes up to 500mm for bore sizes 20mm and 25mm.
Q8. Can this cylinder be repaired if the seals wear out?
A8. The DSNU series features a "rolled-in" end cap design for maximum air-tightness and compactness. This means it is generally a non-repairable unit, but its long service life typically exceeds millions of cycles before needing replacement.
