Airtac STA Single Acting Compact Guided Cylinder STA25X5S
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA25X5S is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø25mm bore and 5mm 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
- Stroke5 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 STA25X5S
The AirTAC STA25X5S is a compact single-acting pull-type cylinder where air retracts the 10 mm rod and an internal spring extends it back out. It yields 177.7 N of net pull at 0.5 MPa, making it well-suited for short 5 mm tensioning or hold-down duties. The short riveted body saves valuable axial mounting depth where a round-body cylinder will not fit.
Because it is spring-extended, the unit fails safe to the extended position on air loss and requires a minimum 0.2 MPa operating pressure to overcome the spring. The included -S magnet allows position detection using an AirTAC reed or electronic switch mounted in the body grooves.
Airtac STA Single Acting Compact Guided Cylinder STA25X5S Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA25X5S |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø25 mm |
| Stroke | 5 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 STA25X5S
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 25 | Bore size in mm. |
| ×5 | 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 STA25X5S Is Used
Clamp Retraction
Uses the 177.7 N pull to draw a machining fixture clear of the part, letting the internal spring push the clamp open when air stops.
Gate Return
Employs the spring-extend function to hold a diverter gate open by default, using the 5 mm pull stroke to close it briefly and route packages.
Film Tensioning
Leverages the short 5 mm stroke and net pull force to maintain steady tension on packaging webbing, releasing the pull when the cycle finishes.
Is the Airtac STA Single Acting Compact Guided Cylinder STA25X5S the Right Cylinder?
When sizing this model, compare its 177.7 N net pull at 0.5 MPa against adjacent bores: the STA20 provides 108.9 N, while the STA32 offers 290.1 N. This yields a safe working load of roughly 107 N (about 60% of the 0.5 MPa figure) or a vertical lift capacity of approximately 9.1 kg with a 2:1 margin.
This configuration features a 25 mm bore, 5 mm stroke, M5x0.8 port, and a female M5x0.8 rod-end thread. Remember the 30 mm maximum standard stroke ceiling, and note that the fixed NBR bumper decelerates the stroke end but does not lock the load. For holding a mid-stroke position without live pressure, a double-acting SDA with an external rod lock is required.
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 STA25X5S FAQ
This single-acting pull cylinder provides a net pull force of 177.7 N at 0.5 MPa and 260.1 N at 0.7 MPa. These figures already account for the internal return spring.
No, the spring drives the rod to the extended rest position on air loss, so it cannot hold a mid-stroke load. It also requires at least 0.2 MPa to overcome the spring and retract the rod.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC STA Cylinders
Request a Quote for Airtac STA Single Acting Compact Guided Cylinder STA25X5S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.