Airtac SSA Single-Acting Compact Cylinder SSA25X30SB
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA25X30SB 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 SSA25X30SB
The AirTAC SSA25X30SB is a compact single-acting push-type cylinder where air pressure extends the rod and an internal mechanical spring retracts it. Delivering 216.9 N of net push at 0.5 MPa, this 25 mm bore unit requires only a single air line and one solenoid port to operate. This streamlined plumbing approach cuts fitting costs and saves valuable valve manifold space in crowded machinery.
This specific configuration includes a built-in piston magnet for position sensing alongside a male M8x1.25 threaded rod end. The short riveted body significantly reduces axial mounting depth compared to standard round-body cylinders. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, absorbing shock within the 50-500 mm/s operating speed range.
Airtac SSA Single-Acting Compact Cylinder SSA25X30SB Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA25X30SB |
|---|---|
| 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 SSA25X30SB
| 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 SSA25X30SB Is Used
Short-Stroke Part Clamping
Secures lightweight machined components against a fixture stop using 216.9 N of net force at 0.5 MPa, releasing instantly when air pressure is removed.
Package Diverter Ejection
Pushes sorted cartons off a narrow conveyor belt using the 30 mm stroke, with the internal spring ensuring the rod retracts fully to avoid collisions.
Press Pin Insertion
Drives a male M8x1.25 threaded tool head to seat dowel pins into housings, relying on the fixed NBR bumper to absorb the impact at the stroke end.
Is the Airtac SSA Single-Acting Compact Cylinder SSA25X30SB the Right Cylinder?
When sizing this model, evaluate the neighboring bores to match your actual load requirements. Stepping down, the SSA20 provides 134.1 N of net push at 0.5 MPa, while stepping up to the SSA32 yields 346.6 N at the same pressure. For the SSA25X30SB, a safe working load is approximately 130 N, equating to a vertical lift capacity of roughly 11.1 kg when applying a 2:1 safety margin.
This configuration features a 25 mm bore, a 30 mm stroke (the maximum standard length for this series), an M5x0.8 air port, a male M8x1.25 rod thread, and a built-in magnetic piston. Operating pressure must be maintained between 0.2 and 1.0 MPa, as a minimum of 0.2 MPa is required to overcome the return spring. Because the spring drives retraction upon air loss, this cylinder cannot hold a mid-stroke load without external mechanical locking.
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 SSA25X30SB FAQ
The SSA25X30SB provides a net push force of 216.9 N at 0.5 MPa and 315.1 N at 0.7 MPa. These figures already account for the subtraction of the internal return spring force, representing the true usable output for your design calculations.
No, the internal spring actively drives the rod back to its retracted rest position when air is released. It cannot hold a mid-stroke load, and a minimum operating pressure of 0.2 MPa is required to overcome the spring during the extension stroke.
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