The AirTAC AirTAC SDA25X70S Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 70mm 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 SDA25X70S 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 short riveted assembly integrates the barrel, rear cover, piston, and rod, drastically reducing axial mounting depth where a conventional round-body unit would not fit. This space-saving footprint is invaluable for tight machine layouts.
This specific model includes a built-in piston magnet (the S option) for position sensing via AirTAC reed or electronic switches mounted in the body grooves. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning operators should slow the approach or add external shock absorbers for high-energy loads. The 10 mm piston rod and M5x0.8 air port ensure straightforward integration.
| Model | AirTAC SDA25X70S Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 70 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. |
| ×70 | 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 a tool-changing arm in a PCB drilling station, utilizing the 70 mm stroke and 245.4 N force to swap precision drill bits within a confined machinery envelope.
Folds minor corrugated box flaps on a continuous packaging line, where the short body depth prevents collision with adjacent conveyor guide rails.
Toggles a precision fluid dispensing valve for chemical reagents, relying on the magnetic sensor to confirm the open and closed positions.
Selecting this 25 mm bore provides a safe working load of roughly 147 N (about 60 percent of the 245.4 N push at 0.5 MPa), translating to a vertical lift capacity near 12.5 kg with a 2:1 safety margin. If your application requires less force, stepping down to the SDA20 yields 157.1 N at 0.5 MPa, while stepping up to the SDA32 provides 402.1 N for heavier demands. Keep in mind that a plain compact cylinder drifts when air pressure is lost or the valve is centered; the fixed bumper only decelerates near stroke end and acts as neither a lock nor a brake. To hold a load securely without live pressure, an external rod lock or pilot-operated check valve is required. When ordering, confirm the 70 mm stroke, M5x0.8 port, built-in magnet, and female rod-end thread.
Quick checklist
This 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. The operating pressure range is 0.15-1.0 MPa.
No, it uses a fixed NBR bumper at each end to decelerate the piston near the stroke limits. It is not an adjustable air cushion, nor does it function as a braking lock. For high-speed or high-energy cycles, you should add an external shock absorber or reduce the approach speed.
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