Airtac SSA Single-Acting Compact Cylinder SSA12X25
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA12X25 is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø12mm bore and 25mm 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.
- BoreØ12 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typeSingle acting, push type
- Rod threadM3×0.5 (F) / M5×0.8 (B)
- CushionFixed NBR bumper
About the Airtac SSA Single-Acting Compact Cylinder SSA12X25
The AirTAC SSA12X25 is a compact single-acting push-type cylinder where air pressure extends the rod and an internal spring retracts it. It yields 46.5 N net push at 0.5 MPa, with the return spring force already subtracted for accurate sizing. This 12 mm bore unit uses a single M5x0.8 port and one solenoid valve, cutting fitting complexity in crowded machinery.
Its short riveted body minimizes axial mounting depth where larger profile cylinders fail to fit. A fixed NBR bumper decelerates the stroke end, providing end-of-travel protection without adjustable cushions. This specific SKU lacks a piston magnet, so it cannot host sensing switches without upgrading to an -S variant.
Airtac SSA Single-Acting Compact Cylinder SSA12X25 Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA12X25 |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø12 mm |
| Stroke | 25 mm |
| Acting type | Single acting, push type |
| Port size | M5×0.8 |
| Rod end thread | M3×0.5 female / M5×0.8 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 (Ø12mm, Push)
| Pressure | Push force (net) |
|---|---|
| 0.5 MPa | 47 N |
| 0.7 MPa | 69 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 SSA12X25
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×25 | 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 SSA12X25 Is Used
Small Part Ejection
Pushes lightweight plastic components out of machining nests using its 46.5 N net output.
Package Diverting
Acts as a compact diverter arm for thin cartons on a conveyor, saving axial envelope space.
Lab Fixture Clamping
Secures delicate test tubes in place with a calculated 28 N safe working load.
Is the Airtac SSA Single-Acting Compact Cylinder SSA12X25 the Right Cylinder?
This 12 mm bore provides 46.5 N net push at 0.5 MPa. Stepping up to the SSA16 raises output to 80.5 N, while 12 mm is the smallest available bore, making it the baseline for light-duty tasks. The 25 mm stroke sits comfortably under the 30 mm maximum limit.
Because the spring drives retraction, the SSA12X25 will not hold a mid-stroke load under air loss. Operating pressure must be 0.2-1.0 MPa to overcome the spring. Confirm your build requires a female M3x0.5 rod-end thread, a 6 mm rod, and no magnet.
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 SSA12X25 FAQ
The SSA12X25 delivers 46.5 N net push at 0.5 MPa and 69.2 N at 0.7 MPa. These figures already subtract the internal return spring force.
No. It is a single-acting push cylinder where an internal spring retracts the rod upon air loss. It cannot hold a mid-stroke load and requires at least 0.2 MPa to overcome the spring.
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