Airtac SSA Single-Acting Compact Cylinder SSA50X25S
The AirTAC SSA Single-Acting Compact Cylinder SSA50X25S is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø50mm 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.
- BoreØ50 mm
- Stroke25 mm
- Port sizePT1/4
- Acting typeSingle acting, push type
- Rod threadM10×1.5 (F) / M18×1.5 (B)
- CushionFixed NBR bumper
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SSA Single-Acting Compact Cylinder SSA50X25S
The AirTAC SSA50X25S is a compact single-acting push-type cylinder where air pressure extends the rod and an internal mechanical spring handles the retraction. Delivering 874.7 N of net push at 0.5 MPa, it is designed for short-stroke actuation in tight fixtures. The quoted force is already net of the return spring, providing a true design figure rather than raw air pressure. This specific configuration includes a 25 mm stroke and a built-in piston magnet.
Featuring a 50 mm bore, this unit uses a 20 mm piston rod and a PT1/4 port. The short riveted body significantly reduces axial mounting depth compared to standard round-body cylinders, making it ideal for crowded machinery. A fixed NBR bumper absorbs end-of-stroke shock, and the integrated magnet enables position sensing with AirTAC reed or electronic switches. Operating pressure must be at least 0.2 MPa to overcome the internal spring, with a maximum speed of 50-500 mm/s.
Airtac SSA Single-Acting Compact Cylinder SSA50X25S Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA50X25S |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø50 mm |
| Stroke | 25 mm |
| Acting type | Single acting, push type |
| Port size | PT1/4 |
| Rod end thread | M10×1.5 female / M18×1.5 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 (Ø50mm, Push)
| Pressure | Push force (net) |
|---|---|
| 0.5 MPa | 875 N |
| 0.7 MPa | 1267 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 SSA50X25S
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 50 | 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 SSA50X25S Is Used
Heavy-Duty Stamping Ejector
Uses the 874.7 N net push at 0.5 MPa to positively eject thick metal blanks from a die, relying on the spring return to keep the rod clear during the press cycle.
Pallet Flap Folder
Deploys 25 mm of stroke to fold corrugated carton flaps prior to taping, where the compact riveted body fits neatly within the conveyor side frame.
Parcel Diverter Gate
Actuates a routing gate on a high-speed sortation belt, with the integrated -S magnet confirming gate position via an electronic switch before parcels arrive.
Is the Airtac SSA Single-Acting Compact Cylinder SSA50X25S the Right Cylinder?
When sizing this model, compare the 874.7 N net push at 0.5 MPa against adjacent bores. Stepping down, the SSA40 provides 545.6 N, while stepping up to the SSA63 yields 1382.6 N at the same pressure. The maximum standard stroke for this series is 30 mm, and this 25 mm unit falls well within that limit.
Remember that with air released, the spring drives the rod back to its rest position, meaning it cannot hold a mid-stroke load without live pressure. This SSA50X25S features the -S magnet code for sensing, a female M10x1.5 rod-end thread, and a PT1/4 port. If your application requires a male rod thread, you would need the B option variant.
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 SSA50X25S FAQ
The net push force is 874.7 N at 0.5 MPa and 1267.4 N at 0.7 MPa. These figures already account for the internal return spring resistance, giving you the true usable output force for your design calculations.
No, it cannot hold a mid-stroke load. As a single-acting push cylinder, the internal spring retracts the rod when air is released. It requires a minimum of 0.2 MPa to overcome the spring and extend, and any loss of pressure will cause the rod to return to its retracted position.
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