Airtac SDA Ultra Thin Cylinder SDA12X25S
The AirTAC Airtac SDA Ultra Thin Cylinder SDA12X25S is a genuine double-acting COMPACT (thin) air cylinder with a Ø12mm bore and 25mm stroke, M5×0.8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
- BoreØ12 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM3×0.5 (F) / M5×0.8 (B)
- CushionFixed NBR bumper (both ends)
About the Airtac SDA Ultra Thin Cylinder SDA12X25S
The AirTAC SDA12X25S is a double-acting single-rod compact cylinder engineered for tight spatial constraints. It yields 56.5 N of push force and 42.4 N of pull force at 0.5 MPa, operating within a 30-500 mm/s speed range. The riveted body assembly significantly reduces axial mounting depth compared to conventional round-body units, making it highly effective for shrinking overall machine footprints.
This specific configuration includes a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the body grooves. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable cushion, meaning external shock absorbers should be specified for high-energy impacts. The 6 mm piston rod utilizes an M5x0.8 port and a female M3x0.5 rod-end thread to connect cleanly to light loads.
Airtac SDA Ultra Thin Cylinder SDA12X25S Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA12X25S |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø12 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M3×0.5 female / M5×0.8 male (B) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
| Max standard stroke | Up to 50 mm |
Specifications follow the official AirTAC SDA compact-cylinder datasheet. Confirm against the product label before installation. Port thread: PT (standard). Rod: female thread (blank) / male thread (B).
Theoretical Output Force (Ø12mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 57 N | 42 N |
| 0.7 MPa | 79 N | — |
| Max (@1.0 MPa) | 12 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SDA Ultra Thin Cylinder SDA12X25S
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| B | Male-thread piston rod (omit = female-thread rod). |
Thread: PT standard. Related SDA-family variants: SSA (single-acting push), STA (single-acting pull), SDAD (double rod), SDAJ (adjustable stroke), SDAT (duplex), SDAW (duplex-end).
Where the Airtac SDA Ultra Thin Cylinder SDA12X25S Is Used
PCB Ejector Pins
Deploys a 25 mm stroke to push bare printed circuit boards out of testing fixtures without overwhelming delicate traces, utilizing the 56.5 N push force limit.
Lab Dispenser Actuation
Drives micro-valves on automated fluid dispensing heads where the short riveted body minimizes Z-axis height and the built-in magnet confirms valve seat closure.
Small Part Sorting
Pushes lightweight plastic components into reject chutes on high-speed inspection lines, relying on the fixed NBR bumper to absorb the impact at 500 mm/s.
Is the Airtac SDA Ultra Thin Cylinder SDA12X25S the Right Cylinder?
When sizing this 12 mm bore actuator, evaluate your force margins carefully. Stepping up to the SDA16 increases the 0.5 MPa push output to 100.5 N, whereas the SDA12 represents the smallest standard option in this compact family. Based on the 56.5 N push rating at 0.5 MPa, the safe working load is approximately 34 N (about 60% capacity), translating to a vertical lift capability of roughly 2.9 kg with a 2:1 safety margin. To finalize your order, confirm the 12 mm bore, 25 mm stroke, M5x0.8 port, female rod thread, and the required -S magnet for position sensing. Note that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered, as the fixed bumper only decelerates the stroke end rather than locking the load; utilize an external rod lock or pilot-operated check valve if position holding is critical.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Short-body depth vs. a round-body cylinder
- ✓ Port/thread type (PT)
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
- ✓ Side load — avoid on a compact rod
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the short piston rod.
- check Very long strokes are unsuitable for the compact body.
- check Front/rear covers are riveted — do not dismantle.
- check Installation by qualified personnel per AirTAC docs.
Airtac SDA Ultra Thin Cylinder SDA12X25S FAQ
This double-acting 12 mm bore cylinder generates a push force of 56.5 N and a pull force of 42.4 N at 0.5 MPa. At 0.7 MPa, the push force is 79.2 N. The theoretical maximum push force is 12 kgf at 1.0 MPa. It operates within a pressure range of 0.15-1.0 MPa and a speed range of 30-500 mm/s.
No, the piston will drift if air pressure is lost or the directional valve is centered. The unit uses a fixed NBR bumper at each end to decelerate the stroke, but this acts purely as an impact absorber and not as a locking brake. To maintain position without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
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