Airtac STA Single Acting Compact Guided Cylinder STA25X30S
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA25X30S 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 STA25X30S
The AirTAC STA25X30S is a compact single-acting pull-type cylinder where air retracts the 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 tensioning or return-to-open duties. Because the spring performs the extension stroke, only one air line and solenoid port are required.
This unit features a built-in piston magnet for AirTAC reed or electronic switches. The short riveted body saves axial mounting depth where a round-body cylinder will not fit. End-of-stroke deceleration is handled by a fixed NBR bumper, which is not an adjustable air cushion.
Airtac STA Single Acting Compact Guided Cylinder STA25X30S Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA25X30S |
|---|---|
| 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 STA25X30S
| 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 STA25X30S Is Used
Film Web Tensioning
Pulls a tensioning roller back against packaging film with 177.7 N net force, releasing automatically to let the spring extend when air is cut.
Pallet Gate Return
Retracts a pneumatic gate pin to allow pallet passage, relying on the internal spring to push the pin back out and secure the conveyor lane.
Clamp Release Mechanism
Holds a workpiece by pulling a clamp arm inward, with the spring extending the rod to safely open the clamp during an air pressure failure.
Is the Airtac STA Single Acting Compact Guided Cylinder STA25X30S the Right Cylinder?
This 25 mm bore generates 177.7 N net pull at 0.5 MPa. Sizing both ways, the STA20 provides 108.9 N while the STA32 offers 290.1 N at the same pressure. With a 2:1 safety margin, the safe working load is about 107 N, allowing a vertical lift of roughly 9.1 kg.
The 30 mm stroke hits the maximum standard limit for this series. Operating pressure must be at least 0.2 MPa to overcome the return spring. This configuration includes the S magnet option and a female M5x0.8 rod-end thread on a 10 mm rod. The port is M5x0.8. Note that on air loss the spring drives the rod out, so it cannot hold a mid-stroke load without an external 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 STA25X30S FAQ
This cylinder provides a net pull of 177.7 N at 0.5 MPa and 260.1 N at 0.7 MPa. It requires an operating pressure of 0.2 to 1.0 MPa, needing at least 0.2 MPa to overcome the internal return spring.
Air pressure retracts the 10 mm rod while the internal spring extends it to the resting position. The S option includes a built-in piston magnet for position sensing with AirTAC reed or electronic switches.
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 STA25X30S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.