Airtac SSA Single-Acting Compact Cylinder SSA25X5B
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA25X5B 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 SSA25X5B
The AirTAC SSA25X5B 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 force at 0.5 MPa. Because the return spring force is already subtracted, this figure represents the true usable output for your design rather than raw pneumatic energy.
This model features a 5 mm stroke and a male M8x1.25 threaded piston rod for secure mounting. Its short riveted body minimizes axial footprint in crowded fixtures. A single air line and solenoid port drive the motion, cutting fitting complexity and valve costs compared to double-acting setups.
Airtac SSA Single-Acting Compact Cylinder SSA25X5B Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA25X5B |
|---|---|
| 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 SSA25X5B
| 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 SSA25X5B Is Used
Short-Stroke Part Clamping
Uses the 216.9 N net push at 0.5 MPa to secure aluminum brackets during machining, releasing instantly via spring return when air is cut.
Product Diverter Gate
Extends 5 mm to nudge lightweight cartons on a packaging line, relying on the compact riveted body to fit within tight side-guide clearances.
Ejector Pin Actuation
Pushes completed molded parts out of a fixture using the male M8x1.25 rod thread, simplifying plumbing by needing just one air line.
Is the Airtac SSA Single-Acting Compact Cylinder SSA25X5B the Right Cylinder?
When sizing this 25 mm bore actuator, evaluate neighboring options using 0.5 MPa net push figures. If 216.9 N is excessive, the SSA20 provides 134.1 N; if more thrust is required, the SSA32 yields 346.6 N. This SSA25X5B configuration includes a 5 mm stroke, an M5x0.8 port, and the male M8x1.25 rod end.
Remember the 30 mm maximum standard stroke ceiling for this series. Operating pressure must be 0.2-1.0 MPa to overcome the spring. Without live air pressure the internal spring drives the rod back to rest; it cannot hold a mid-stroke load. This specific SKU lacks the -S magnet, so it cannot accept 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 SSA25X5B FAQ
The net push force is 216.9 N at 0.5 MPa and 315.1 N at 0.7 MPa. These values already account for the internal return spring resistance, giving you the true design output. A safe working load is roughly 130 N, allowing a 2:1 margin for vertical lifts around 11.1 kg.
Air pressure extends the rod, while the internal spring retracts it when air is released. You must supply at least 0.2 MPa operating pressure to overcome the spring. The cylinder uses a fixed NBR bumper to decelerate the stroke end, which is not an adjustable cushion or a locking mechanism for mid-stroke loads.
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