
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA25X10 is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø25mm bore and 10mm stroke. Air pushes the rod and an internal spring returns it, so one solenoid line drives the motion — ideal for short-stroke clamping and ejection in tight spaces.
The AirTAC SSA25X10 is a compact single-acting push-type cylinder where air extends the rod and an internal spring retracts it. It generates 216.9 N of net push at 0.5 MPa, a figure that already accounts for the return spring force. This 25 mm bore unit uses a 10 mm stroke, making it highly effective for short-range ejection or clamping tasks.
Because it relies on spring return, you only need one air line and one solenoid port to drive the motion, cutting down on fittings and valve complexity. The short riveted body minimizes axial mounting depth in tight fixtures. End-of-stroke deceleration is handled by a fixed NBR bumper, which absorbs shock but is not an adjustable cushion.
| Model | Airtac SSA Single-Acting Compact Cylinder SSA25X10 |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø25 mm |
| Stroke | 10 mm |
| Acting type | Single acting, push type |
| 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 | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 500 mm/s |
| Cushion | Fixed NBR bumper |
| Max standard stroke | Up to 30 mm |
Specifications follow the official AirTAC SDA-family datasheet. Single-acting types start at 0.2 MPa (the spring must be overcome). Confirm against the product label before installation.
| Pressure | Push force (net) |
|---|---|
| 0.5 MPa | 217 N |
| 0.7 MPa | 315 N |
These are NET output forces — the return-spring force is already deducted. Single-acting push only; the spring performs the opposite stroke. Size with a safety margin.
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 25 | Bore size in mm. |
| ×10 | Stroke length in mm (single-acting max 30 mm). |
| S | Built-in magnet for magnetic-switch sensing (omit = none). |
| B | Male-thread piston rod (omit = female thread). |
Thread: PT standard. SSA pushes out / spring returns; STA pulls in / spring extends. Related: SDA (double acting), SDAD (double rod), SDAJ (adjustable stroke).
Uses the 216.9 N net push to secure light metal workpieces in machining fixtures, releasing automatically via spring return when air pressure drops.
Deploys a 10 mm stroke to push small cartons off a production line, relying on the single air line to keep the pneumatic layout minimal.
Acts as a spring-return stop pin in automated assembly, fitting into shallow machine frames thanks to the short riveted body design.
When sizing this model, compare its 216.9 N net push at 0.5 MPa against adjacent bores: the SSA20 provides 134.1 N, while the SSA32 offers 346.6 N. A safe working load is roughly 130 N, or a vertical lift of about 11.1 kg with a 2:1 margin. Operating pressure must be at least 0.2 MPa to overcome the spring, up to a maximum of 1.0 MPa.
This configuration features a 25 mm bore, 10 mm stroke, and an M5x0.8 port. It has a female M5x0.8 rod-end thread and no piston magnet. If your application requires position sensing, select the -S option to enable reed or electronic switches. Remember that the spring drives the rod back to rest on air loss; it will not hold a mid-stroke load without external live pressure.
Quick checklist
The SSA25X10 provides 216.9 N of net push force at 0.5 MPa and 315.1 N at 0.7 MPa. These values already subtract the internal return spring force, giving you the true usable output for your design calculations.
No, the internal spring drives the rod back to its retracted rest position when air is released. It cannot hold a mid-stroke load; for that, you would need a double-acting cylinder with an external rod lock.
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