Airtac SSA Single-Acting Compact Cylinder SSA25X10S
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA25X10S 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.
- BoreØ25 mm
- Stroke10 mm
- Port sizeM5×0.8
- Acting typeSingle acting, push type
- Rod threadM5×0.8 (F) / M8×1.25 (B)
- CushionFixed NBR bumper
About the Airtac SSA Single-Acting Compact Cylinder SSA25X10S
The AirTAC SSA25X10S is a compact single-acting push-type cylinder where air pressure extends the rod and an internal spring retracts it. It generates 216.9 N of net push at 0.5 MPa, meaning the return spring force is already subtracted to give you a real design figure. A safe working load sits around 130 N, allowing a vertical lift of roughly 11.1 kg with a 2:1 safety margin.
Because the spring handles the return stroke, you only need a single air line and one solenoid port, which cuts down on fittings and simplifies your valve selection. This unit includes a built-in piston magnet for AirTAC reed or electronic switches, and the short riveted body saves valuable axial mounting depth in tight fixtures. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable cushion.
Airtac SSA Single-Acting Compact Cylinder SSA25X10S Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA25X10S |
|---|---|
| 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.
Net Output Force (Ø25mm, Push)
| 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.
Model Code: Airtac SSA Single-Acting Compact Cylinder SSA25X10S
| 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).
Where the Airtac SSA Single-Acting Compact Cylinder SSA25X10S Is Used
Short-Stroke Part Clamping
Secures lightweight machined components against a stop using 216.9 N of thrust, releasing instantly when air pressure is removed.
Ejector Diverter Gate
Pushes small cartons off a packaging line in a 10 mm stroke, relying on the spring return to keep the gate clear during normal flow.
PCB Fixture Actuation
Deploys a locating pin in confined electronics assembly spaces where the compact riveted body minimizes axial footprint.
Is the Airtac SSA Single-Acting Compact Cylinder SSA25X10S the Right Cylinder?
When sizing this model, verify that 216.9 N at 0.5 MPa meets your thrust requirement. Stepping down to the SSA20 bore drops the output to 134.1 N, while moving up to the SSA32 increases it to 346.6 N. This 25 mm bore features a 10 mm stroke, well within the 30 mm maximum standard limit, and uses an M5x0.8 air port with a female M5x0.8 rod-end thread.
Remember that operating pressure must be at least 0.2 MPa to overcome the internal spring. Because air loss drives the rod back to its retracted rest position, this cylinder cannot hold a mid-stroke load without live pressure or an external locking device. The -S suffix confirms the magnet is present for position sensing.
Quick checklist
- ✓ Net push force at your working pressure
- ✓ Stroke ≤ 30 mm (single-acting limit)
- ✓ Single air line saves a valve/port
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.2 – 1.0 MPa operating pressure.
- check Remember the spring performs the return stroke.
- check Avoid side load on the short piston rod.
- check Front/rear covers are riveted — do not dismantle.
- check Installation by qualified personnel per AirTAC docs.
Airtac SSA Single-Acting Compact Cylinder SSA25X10S FAQ
The net push force is 216.9 N at 0.5 MPa and 315.1 N at 0.7 MPa. These figures already account for the internal return spring resistance, giving you the true usable output.
No. If air pressure is lost, the internal spring drives the rod back to its fully retracted position. It cannot hold a mid-stroke load, and you need at least 0.2 MPa of air pressure to overcome the spring and extend the rod.
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