The AirTAC AirTAC SDA25X90S Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 90mm 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 SDA25X90S 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 highly shortened unit, drastically reducing axial footprint compared to conventional round-body designs. The 25 mm bore features a hard-anodized inner wall and a two-way piston seal for reliable low-friction operation across the 30-500 mm/s speed range.
Equipped with a built-in piston magnet (-S option), this model is ready to accept AirTAC reed or electronic switches along the peripheral grooves for precise end-of-stroke detection. End-stop energy is managed solely by a fixed NBR bumper, which decelerates the motion near the stroke extremes but is not a field-adjustable air cushion. With a 90 mm stroke and M5x0.8 air ports, it provides a robust linear motion solution where depth is restricted.
| Model | AirTAC SDA25X90S Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 90 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. |
| ×90 | 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).
Drives the linear cutting head on an electronic PCB depaneling machine, utilizing the 90 mm stroke and 245.4 N push force to precisely separate routed circuit boards without stressing components.
Actuates the side flap folding mechanism on a continuous motion packaging line, where the short riveted body minimizes machine width and the built-in magnet confirms fold completion via a reed or electronic switch.
Powers a lightweight pneumatic diverter arm on a package sorting conveyor, relying on the 206.2 N retract force to pull the gate clear and the fixed NBR bumper to absorb the impact at the end of each cycle.
When sizing this actuator, consider stepping down to the SDA20, which provides 157.1 N of push force at 0.5 MPa, or moving up to the SDA32, which yields 402.1 N at the same pressure. At 0.5 MPa, the SDA25X90S offers a safe working load of roughly 147 N (about 60% of its 245.4 N capacity) and can vertically lift approximately 12.5 kg with a 2:1 safety margin. To order, confirm the 25 mm bore, 90 mm stroke, M5x0.8 port, the required female M5x0.8 or male M8x1.25 rod thread, and the -S magnet option. Keep in mind that a standard compact cylinder drifts when air pressure is lost or the valve is centered; the fixed bumper only decelerates the piston near the end of travel and does not function as a locking brake. If your application must hold a load without live pressure, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
The SDA25X90S generates a push force of 245.4 N and a pull force of 206.2 N at 0.5 MPa. At 0.7 MPa, the push force is 343.6 N and the pull force is 288.6 N. The theoretical maximum push force is 50 kgf at the maximum operating pressure of 1.0 MPa.
No, it uses a fixed NBR bumper at each end to decelerate the stroke, which is not a field-adjustable air cushion. Additionally, it does not hold its load if air is lost or the valve is centered; the piston will drift. For load holding, an external rod lock or pilot-operated check valve is required.
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