Airtac SSA Single-Acting Compact Cylinder SSA25X5
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA25X5 is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø25mm bore and 5mm 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
- Stroke5 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 SSA25X5
The AirTAC SSA25X5 is a compact single-acting push-type cylinder where air pressure extends the rod and an internal mechanical spring handles the retraction. It generates 216.9 N of net push force at 0.5 MPa, a figure that already accounts for the return spring resistance. Because it relies on a single air line and one solenoid port, plumbing is drastically simplified for short-stroke clamping tasks.
This model features a 25 mm bore, a 10 mm piston rod, and a brief 5 mm stroke. The short riveted body minimizes axial mounting depth, fitting easily into crowded fixtures. A fixed NBR bumper absorbs end-of-stroke shock, and this specific SKU lacks a piston magnet, so it cannot support magnetic sensing.
Airtac SSA Single-Acting Compact Cylinder SSA25X5 Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA25X5 |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø25 mm |
| Stroke | 5 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 SSA25X5
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 25 | Bore size in mm. |
| ×5 | 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 SSA25X5 Is Used
Short-Stroke Part Clamping
Applies 216.9 N of net push at 0.5 MPa to hold light metal workpieces firmly against a machining stop.
Package Diverter Gate
Uses the spring-return action to keep a routing flap closed by default, opening only when 0.2 MPa air pressure is applied.
Ejector Station
Pushes finished 11.1 kg components out of a tight assembly jig using the 5 mm stroke without requiring deep axial clearance.
Is the Airtac SSA Single-Acting Compact Cylinder SSA25X5 the Right Cylinder?
When sizing this unit, consider the neighboring bores: stepping down to the SSA20 yields 134.1 N of net push at 0.5 MPa, while moving up to the SSA32 provides 346.6 N. This SSA25X5 provides a safe working load of roughly 130 N, which equates to a vertical lift capacity of about 11.1 kg with a 2:1 safety margin. The maximum standard stroke for this series is 30 mm.
Operating pressure must sit between 0.2 and 1.0 MPa, as at least 0.2 MPa is required to overcome the internal spring. This configuration includes an M5x0.8 port, a female M5x0.8 rod-end thread, and no magnet. If your application requires position sensing, you must select the -S option to enable reed or electronic switches.
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 SSA25X5 FAQ
This cylinder provides a net push force of 216.9 N at 0.5 MPa and 315.1 N at 0.7 MPa. It requires an operating pressure of 0.2 to 1.0 MPa, with a minimum of 0.2 MPa necessary to overcome the return spring.
No, it cannot hold a mid-stroke load. If air is removed, the internal spring immediately drives the rod back to its fully retracted rest position. For load holding without live pressure, an external mechanical rod lock is required.
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