Airtac STA Single Acting Compact Guided Cylinder STA25X30
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA25X30 is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø25mm bore and 30mm stroke. Air pulles 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, pull type
- Rod threadM5×0.8 (F) / M8×1.25 (B)
- CushionFixed NBR bumper
About the Airtac STA Single Acting Compact Guided Cylinder STA25X30
The AirTAC STA25X30 is a compact single-acting pull-type cylinder where compressed air retracts the 10 mm piston rod and an internal spring pushes it back out. At 0.5 MPa it generates 177.7 N of net pull, increasing to 260.1 N at 0.7 MPa. Because the return spring force is already subtracted from these figures, you can size directly to the stated net output without manual derating.
This 30 mm stroke actuator hits the maximum standard travel ceiling for the STA family. Its short riveted body drastically reduces axial mounting depth compared to round-body alternatives, fitting easily into cramped machinery. A fixed NBR bumper decelerates the stroke end, and the unit requires a minimum of 0.2 MPa operating pressure to overcome the internal spring.
Airtac STA Single Acting Compact Guided Cylinder STA25X30 Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA25X30 |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø25 mm |
| Stroke | 30 mm |
| Acting type | Single acting, pull 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, Pull)
| Pressure | Pull force (net) |
|---|---|
| 0.5 MPa | 178 N |
| 0.7 MPa | 260 N |
These are NET output forces — the return-spring force is already deducted. Single-acting pull only; the spring performs the opposite stroke. Size with a safety margin.
Model Code: Airtac STA Single Acting Compact Guided Cylinder STA25X30
| STA | Compact single acting, pull 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 STA Single Acting Compact Guided Cylinder STA25X30 Is Used
Tension Gate Closure
Uses the 177.7 N net pull to draw a conveyor diverter gate inward against belt drag, relying on the internal spring to automatically push the gate open when air pressure drops.
Film Roll Hold-Down
Pulls a packaging film tensioning arm back into the loaded position during wrapping cycles, saving axial space in tight wrapping machinery with its compact riveted body.
Carton Flap Puller
Retracts a 10 mm rod to pull carton flaps clear for sealing operations, utilizing the 30 mm stroke to clear the packaging path before the spring extends the mechanism.
Is the Airtac STA Single Acting Compact Guided Cylinder STA25X30 the Right Cylinder?
When sizing this model, compare its 177.7 N @0.5 MPa pull capacity against adjacent bores: the STA20 provides 108.9 N, while the STA32 offers 290.1 N. For a 2:1 safety margin, the safe working load is approximately 107 N, making it suitable for vertically lifting masses up to 9.1 kg. The 30 mm stroke represents the absolute maximum standard travel available for this series.
Confirm your requirements for this exact configuration: 25 mm bore, 30 mm stroke, M5x0.8 air port, and a female M5x0.8 rod-end thread. This specific SKU lacks the -S magnet code, so it cannot accept reed or electronic switches. Because the spring drives the rod to its extended rest position on air loss, the STA25X30 will not hold a mid-stroke load without an external locking device.
Quick checklist
- ✓ Net pull 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 STA Single Acting Compact Guided Cylinder STA25X30 FAQ
The STA25X30 provides a net pull force of 177.7 N at 0.5 MPa and 260.1 N at 0.7 MPa. Operating pressure must be between 0.2 and 1.0 MPa, as a minimum of 0.2 MPa is required to overcome the internal return spring.
No, this specific SKU does not include the -S option, meaning it lacks a piston magnet and cannot accept reed or electronic switches. You must select an STA25X30S variant to enable sensor groove mounting.
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