Airtac STA Single Acting Compact Guided Cylinder STA25X30SB
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA25X30SB 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 STA25X30SB
The AirTAC STA25X30SB is a compact single-acting pull-type cylinder where air retracts the rod and an internal spring extends it out. It delivers 177.7 N of net pull at 0.5 MPa, reaching the maximum standard stroke limit of 30 mm. This thin riveted body saves axial mounting depth where a round-body or profile cylinder will not fit.
This specific configuration includes a built-in piston magnet for AirTAC reed or electronic switches, plus a male M8x1.25 threaded rod end. The fixed NBR bumper decelerates the stroke end but is not an adjustable air cushion. Operating pressure spans 0.2 to 1.0 MPa, requiring at least 0.2 MPa to overcome the return spring.
Airtac STA Single Acting Compact Guided Cylinder STA25X30SB Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA25X30SB |
|---|---|
| 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 STA25X30SB
| 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 STA25X30SB Is Used
Tension Gate Return
Uses the 177.7 N pull to draw a guard gate closed against tension, with the spring extending it open safely during an air loss.
Package Hold-Down
Pulls a hold-down bracket tight over a carton on a conveyor line, relying on the male M8 thread for a secure linkage.
Bin Diverter Pull
Retracts a sorting diverter arm into a compact riveted body, saving axial depth inside a tight warehouse routing chute.
Is the Airtac STA Single Acting Compact Guided Cylinder STA25X30SB the Right Cylinder?
When sizing this model, compare the 177.7 N net pull at 0.5 MPa against its neighbors. Dropping down to a 20 mm bore yields 108.9 N, while stepping up to a 32 mm bore provides 290.1 N. A safe working load is roughly 107 N, allowing a vertical lift of about 9.1 kg with a 2:1 margin.
Remember the 30 mm stroke ceiling and the spring-extend behavior: on air loss the spring drives the rod out, so it does not hold a mid-stroke load without live pressure or an external lock. This unit confirms a 25 mm bore, 30 mm stroke, M5x0.8 port, -S magnet, and -B male rod thread.
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 STA25X30SB FAQ
The net pull force is 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, with a minimum of 0.2 MPa needed to overcome the internal return spring.
Air pressure retracts the rod while the internal spring extends it out when air is released. The built-in -S magnet allows position detection using AirTAC reed or electronic switches along the body grooves.
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Standard models usually ship in 3-4 days.
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Related AirTAC STA Cylinders
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