Airtac SSA Single-Acting Compact Cylinder SSA25X15B
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA25X15B is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø25mm bore and 15mm 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
- Stroke15 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 SSA25X15B
The AirTAC SSA25X15B is a compact single-acting push-type cylinder where compressed air extends the rod and an internal mechanical spring handles the retraction. Delivering 216.9 N of net push force at 0.5 MPa, it utilizes a short riveted body to minimize axial mounting depth in crowded machinery. This specific SKU includes a male M8x1.25 piston rod thread for secure external attachment.
Because the quoted force is already net of the return spring, you can size directly to this 216.9 N figure without calculating mechanical losses. The unit requires only one air line and a single solenoid port to drive motion, simplifying plumbing and reducing valve costs. End-of-stroke shock is managed strictly by a fixed NBR bumper, which decelerates the piston without acting as an adjustable air cushion or a locking brake.
Airtac SSA Single-Acting Compact Cylinder SSA25X15B Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA25X15B |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø25 mm |
| Stroke | 15 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 SSA25X15B
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 25 | Bore size in mm. |
| ×15 | 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 SSA25X15B Is Used
Short-Stroke Part Clamping
Secures machined components against a fixture stop using the 216.9 N net push force, releasing instantly when air pressure is removed via the single solenoid port.
Package Diverter Ejector
Pushes lightweight cartons off a sorting line with a safe working load around 130 N, utilizing the compact riveted body to fit within tight conveyor side frames.
Vertical Lift Station
Raises a small palletized payload of roughly 11.1 kg with a 2:1 safety margin, relying on the fixed NBR bumper to absorb the end-of-stroke impact.
Is the Airtac SSA Single-Acting Compact Cylinder SSA25X15B the Right Cylinder?
When sizing this 25 mm bore actuator, evaluate the neighboring bores using real 0.5 MPa net push figures. Dropping down to the SSA20 provides 134.1 N, while stepping up to the SSA32 yields 346.6 N, letting you tune the force margin precisely. This SSA25X15B configuration features a 15 mm stroke, well within the 30 mm series ceiling, and uses an M5x0.8 air port.
Confirm the -B option provides the male M8x1.25 rod thread you need for your tooling, rather than the default female thread. Note that this specific SKU lacks the -S magnet, so it cannot accept AirTAC reed or electronic switches for position sensing. Remember that upon air loss or pressure removal, the internal spring actively drives the rod back to its retracted rest position; it will not hold a mid-stroke load without live pressure or an external locking device.
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 SSA25X15B FAQ
The SSA25X15B 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 resistance of the internal return spring, meaning they represent the actual usable output force.
No, the SSA25X15B is a single-acting push cylinder that requires a minimum of 0.2 MPa to overcome the spring. If air is released, the spring actively retracts the rod to its resting position; it cannot hold a mid-stroke load without an external rod lock.
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