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.
1. Packaging machinery — labeling, sealing, filling and carton forming stations
2. General automation assembly — pressing, clamping, pushing and ejecting in assembly lines
3. Textile machinery — yarn tensioning, fabric guiding, thread cutting
4. Printing & paper converting — paper guiding, cutting, creasing and folding
5. Woodworking & stone processing machines — workpiece clamping, tool feeding, dust-guard actuation
6. Food & beverage processing — filling nozzles, sorting flaps, valve actuation
7. Electronics manufacturing — light-duty feeding, positioning and ejecting
8. Material handling & sorting — diverters, stoppers, lifts and pushers
9. Machine tools — protective doors, tool clamping, coolant nozzles
10. Medical & laboratory equipment — small precise movements in testing and sample handling
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 |
MOQ |
10 |
Lead Time |
5-7Days |
Warranty |
1 year |
Pattern of Payment |
Paypal;T/T;L/C;D/P |
Customization Options
Customization Item |
Options & Details |
Lead Time |
Stroke Length |
Any non-standard stroke from 1 mm to 500 mm (standard), custom up to 2000 mm (bore-dependent maximum) |
3 – 5 days |
Acting Type |
Double-acting (standard). Options: single-acting push (spring extend), single-acting pull (spring retract) |
5 – 7 days |
Acting Type |
Double-acting (standard). Options: single-acting push (spring extend), single-acting pull (spring retract) |
5 – 7 days |
Stroke Adjustment |
Adjustable extend type, adjustable retract type, or both — mechanical precision stop positioning at stroke end |
5 – 7 days |
Through Piston Rod |
Through rod version (both ends) for double-direction work or stroke-limit positioning |
5 – 7 days |
Piston Rod Material |
Standard: stainless steel. Options: 316L stainless (enhanced corrosion), hard chrome-plated (extreme wear) |
5 – 7 days |
Piston Rod Thread |
Standard: ISO metric. Options: UNC/UNF inch, extended/reduced rod, internal thread, spherical rod-eye, clevis |
3 – 5 days |
Cushioning |
Standard: PPS self-adjusting. Options: P (no cushioning), PPV adjustable pneumatic cushioning |
3 – 5 days |
Seal Material Upgrade |
Standard: NBR (-10 °C ~ 70 °C). Options: Viton/FKM (-10 °C ~ 150 °C), HNBR (-25 °C ~ 100 °C), EPDM (food-grade), silicone (medical) |
5 – 7 days |
High-Temperature Variant |
Viton seals + high-temperature grease + stainless hardware — rated to 150 °C continuous |
7 – 10 days |
Low-Temperature Variant |
Low-temperature seals + arctic grease — rated to -40 °C |
7 – 10 days |
Non-Lubricated Variant |
Self-lubricating seals + dry-film bore — oil-free compressed air systems |
7 – 10 days |
Auto Switch / Sensor |
Magnetic piston + pre-installed reed or solid-state sensors (PNP/NPN, 2-wire/3-wire) at specified positions |
5 – 7 days |
Port Thread |
Standard: metric / Rc (PT). Options: G (BSPP), NPT |
3 – 5 days |
Barrel Material |
Standard: aluminum alloy (anodized). Options: stainless steel barrel (304/316) for corrosion-resistant environments |
5 – 7 days |
Mounting Accessories |
Foot bracket, front/rear flange, center trunnion, clevis — all stainless steel hardware available |
3 – 5 days |
OEM Branding |
Custom laser engraving on barrel; neutral packaging for distribution |
3 – 5 days |
Product Advantages
1. ISO 6432 standard, drop-in compatible — same mounting dimensions as Festo DSNU / DSNU-S; replaces the original without machine modification.
2. Compact round body — lightweight, space-saving design for tight installation; DSNU-S style short version available.
3. Smooth, hard-anodized bore — low friction, good running performance and long service life.
4. Magnetic piston ready — auto switches can be mounted directly for position feedback and PLC control.
5. Three cushioning options — P (no cushioning), PPS (self-adjusting pneumatic cushioning, recommended), PPV (adjustable pneumatic cushioning for high speed / heavy loads).
6. Full bore range — Ø8 / 10 / 12 / 16 / 20 / 25 / 32 / 40 / 50 / 63 mm; strokes from 1 mm up to 500 mm standard, longer on request.
7. High operating pressure up to 10 bar — strong output in a small footprint.
8. Corrosion-resistant & stainless variants — suitable for food, marine and humid environments.
9. Complete mounting accessories — foot bracket, front/rear flange, center trunnion, clevis — all stainless hardware available.
10. Factory direct OEM/ODM — competitive wholesale price, custom machining, fast lead time, stable quality.
Application：
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.
Q9.How long is the service life?
A9.Depends on load, speed and air quality; typically millions of cycles with proper filtration (5 μm filter recommended) and lubrication.
Factory Advantages and Certifications
Company Introduction 1
Company Introduction 2
Certification
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