Airtac SSA Single-Acting Compact Cylinder SSA25X30S
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA25X30S is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø25mm bore and 30mm 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
- Stroke30 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 SSA25X30S
The AirTAC SSA25X30S is a compact single-acting push-type cylinder where air pressure extends the rod and an internal spring retracts it. It delivers 216.9 N of net push at 0.5 MPa (315.1 N at 0.7 MPa), with the return spring force already subtracted for accurate sizing. The short riveted body saves axial mounting depth where a larger profile cylinder will not fit.
This 25 mm bore model features a 10 mm piston rod and an M5x0.8 air port. Because it requires only one air line and one solenoid port, plumbing is simplified and fitting costs drop. The built-in -S magnet enables position sensing with AirTAC reed or electronic switches. End-of-stroke shock is handled by a fixed NBR bumper, not an adjustable cushion.
Airtac SSA Single-Acting Compact Cylinder SSA25X30S Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA25X30S |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø25 mm |
| Stroke | 30 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 SSA25X30S
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 25 | Bore size in mm. |
| ×30 | 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 SSA25X30S Is Used
Fixture Clamping
Applies 216.9 N of net clamping force at 0.5 MPa to hold aluminum housings during machining, saving axial space in crowded fixtures.
Part Ejection
Pushes completed plastic parts off a conveyor belt using its 30 mm stroke, relying on the internal spring to retract when air is released.
Carton Sealing
Extends to hold flaps on small packaging boxes while tape is applied, using a single solenoid port for simple pneumatic integration.
Is the Airtac SSA Single-Acting Compact Cylinder SSA25X30S the Right Cylinder?
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 (about 60% of the 0.5 MPa figure), yielding a vertical lift capacity of approximately 11.1 kg with a 2:1 margin.
This unit has a 30 mm stroke, the maximum standard length for the SSA series. Operating pressure must be 0.2-1.0 MPa to overcome the spring. Upon air loss, the spring drives the rod back to rest; it does not hold a mid-stroke load. Configuration confirmed: bore 25, stroke 30, port M5x0.8, female rod thread M5x0.8, with the -S magnet option.
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 SSA25X30S 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 output for your design calculations.
No, the internal spring drives the rod to its retracted rest position upon air loss. It cannot hold a mid-stroke load. A minimum of 0.2 MPa operating pressure is required to overcome the spring and extend the rod.
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