Airtac SSA Single-Acting Compact Cylinder SSA50X25SB
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA50X25SB 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
About the Airtac SSA Single-Acting Compact Cylinder SSA50X25SB
The AirTAC SSA50X25SB is a compact single-acting push-type cylinder where air extends the rod and an internal spring retracts it. It delivers 874.7 N of net push force at 0.5 MPa, meaning the opposing spring resistance is already subtracted from the raw pneumatic power. This 50 mm bore model includes a built-in piston magnet for position sensing and a male M18x1.5 threaded rod end.
Its short riveted body drastically reduces axial mounting depth compared to standard round-body alternatives, fitting easily into crowded machinery. A fixed NBR bumper handles end-of-stroke deceleration, offering reliable shock absorption without the complexity of adjustable cushions. Operating pressure spans 0.2 to 1.0 MPa, requiring at least 0.2 MPa to overcome the return spring.
Airtac SSA Single-Acting Compact Cylinder SSA50X25SB Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA50X25SB |
|---|---|
| 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 SSA50X25SB
| 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 SSA50X25SB Is Used
Heavy-Duty Stamping
Applies 874.7 N of net push at 0.5 MPa to seat metal components firmly in tight stamping dies.
Vertical Parts Ejection
Lifts finished products weighing up to 44.6 kg safely out of a mold using a 2:1 safety margin.
Riveted Body Clamping
Secures heavy workpieces during machining, utilizing the short body depth to fit crowded fixtures.
Is the Airtac SSA Single-Acting Compact Cylinder SSA50X25SB the Right Cylinder?
When sizing this model, compare its 874.7 N @0.5 MPa output against adjacent bores: the SSA40 provides 545.6 N, while the SSA63 offers 1382.6 N. A practical safe working load is roughly 525 N (about 60% of the 0.5 MPa figure), translating to a vertical lift capacity of approximately 44.6 kg with a 2:1 safety margin. This 25 mm stroke sits well under the 30 mm maximum limit.
Remember that upon air loss, the spring drives the rod to its retracted rest position; this unit cannot hold a mid-stroke load without live pressure. This SSA50X25SB configuration includes the -S magnet for reed or electronic switches and the -B male M18x1.5 rod thread. The port size is PT1/4.
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 SSA50X25SB 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.
No, it is a spring-return push type that requires a minimum of 0.2 MPa to overcome the spring. On air loss, the spring forces the rod back to its retracted state; it will not lock or hold a mid-stroke load.
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