The AirTAC AirTAC SDA25X20SN Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 20mm 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.
The AirTAC SDA25X20SN is a double-acting single-rod compact cylinder engineered to deliver 245.4 N of push force and 206.2 N of pull force at 0.5 MPa. Its riveted assembly merges the barrel, rear cover, piston, and rod into a remarkably short axial footprint, solving tight mounting constraints where conventional round bodies fail. The bore is hard-anodized and uses a two-way piston seal for reliable operation across a 30-500 mm/s speed range.
This unit includes a built-in piston magnet (indicated by the S option) 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 air cushion, meaning high-energy cycles may require an external shock absorber. The 10 mm piston rod features a standard female M5x0.8 thread end, operating on an M5x0.8 air port.
| Model | AirTAC SDA25X20SN Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 20 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M5×0.8 female / M8×1.25 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 120 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).
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | — |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 25 | Bore size in mm. |
| ×20 | 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).
Actuates the tooling head on an electronic depaneling machine, utilizing the 20 mm stroke and 245.4 N force to cleanly separate routed circuit boards.
Folds minor corrugated box flaps prior to sealing, where the short 25 mm bore riveted body fits neatly within narrow side framing.
Toggles a pneumatic dispensing nozzle for adhesive application, using the integrated magnet to trigger an electronic switch for precise shot timing.
Selecting this 25 mm bore provides a safe working load of roughly 147 N (about 60% of its 245.4 N push capacity at 0.5 MPa), which translates to a vertical lift capability of approximately 12.5 kg with a 2:1 safety margin. If your application requires less force, the SDA20 offers 157.1 N at 0.5 MPa; stepping up to the SDA32 yields 402.1 N at 0.5 MPa. Keep in mind that a plain compact 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. For position holding without live pressure, an external rod lock or pilot-operated check valve is required. When ordering, confirm the 25 mm bore, 20 mm stroke, M5x0.8 port, female rod thread, and the required sensor magnet.
Quick checklist
This 25 mm bore double-acting cylinder generates 245.4 N push and 206.2 N pull at 0.5 MPa, 343.6 N push and 288.6 N pull at 0.7 MPa, with a theoretical maximum push of 50 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa, proof pressure is 1.5 MPa, and the operating temperature range is -20 to +70 C.
No, it relies on a fixed NBR bumper at each end to decelerate the piston, which is not a field-adjustable air cushion. Additionally, the cylinder does not hold its load if air is lost; the piston will drift, so an external rod lock or pilot-operated check valve is needed for fail-safe position holding.
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