Airtac STA Single Acting Compact Guided Cylinder STA25X10SB
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA25X10SB is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø25mm bore and 10mm 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
- Stroke10 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 STA25X10SB
The AirTAC STA25X10SB is a compact single-acting pull-type cylinder where air retracts the rod and an internal spring extends it out at rest. It generates 177.7 N of net pull at 0.5 MPa (260.1 N at 0.7 MPa), meaning the quoted force is already net of the return spring. This makes it inherently fail-safe to the extended position upon air loss.
Featuring a built-in piston magnet for AirTAC reed or electronic switches and a male M8x1.25 piston rod thread, this unit saves axial mounting depth compared to round-body alternatives. It uses a fixed NBR bumper to decelerate the stroke end, which is not an adjustable air cushion. With a 10 mm stroke, it operates at speeds between 50-500 mm/s.
Airtac STA Single Acting Compact Guided Cylinder STA25X10SB Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA25X10SB |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø25 mm |
| Stroke | 10 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 STA25X10SB
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 25 | Bore size in mm. |
| ×10 | 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 STA25X10SB Is Used
Tension Gate Return
Uses the 177.7 N net pull to draw a diverter gate inward against product flow, letting the spring push it back to the open rest state.
Film Clamp Release
Pulls a clamping jaw out of the way during wrapping cycles, relying on the male M8x1.25 rod thread for a secure fixture.
Vertical Hold-Down
Holds a light fixture down on a vertical lift plane, safely managing around 9.1 kg before the internal spring extends the rod back out.
Is the Airtac STA Single Acting Compact Guided Cylinder STA25X10SB the Right Cylinder?
When sizing this 25 mm bore model, consider the STA20 which yields 108.9 N net pull at 0.5 MPa, or step up to the STA32 providing 290.1 N at 0.5 MPa. Based on the 177.7 N figure at 0.5 MPa, a safe working load is roughly 107 N (about 60 percent capacity), allowing a vertical lift of approximately 9.1 kg with a 2:1 safety margin. Remember the 30 mm maximum standard stroke ceiling for this series.
This configuration includes the -S magnet for position sensing and the -B male M8x1.25 rod end. Operating pressure must be 0.2-1.0 MPa, as at least 0.2 MPa is required to overcome the spring. Because the spring drives the rod out when air is released, it will not hold a mid-stroke load without live pressure or an external lock.
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 STA25X10SB FAQ
This cylinder provides a net pull of 177.7 N at 0.5 MPa and 260.1 N at 0.7 MPa. These values already account for the internal return spring, so you can size directly to the net pull figure.
Air pressure retracts the rod, while the internal spring extends it. It requires a minimum of 0.2 MPa to overcome the spring. If air is lost, the spring drives the rod to the extended position, meaning it cannot hold a mid-stroke load without an external device.
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