Airtac STA Single Acting Compact Guided Cylinder STA12X30S
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA12X30S is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø12mm 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.
- BoreØ12 mm
- Stroke30 mm
- Port sizeM5×0.8
- Acting typeSingle acting, pull type
- Rod threadM3×0.5 (F) / M5×0.8 (B)
- CushionFixed NBR bumper
About the Airtac STA Single Acting Compact Guided Cylinder STA12X30S
The AirTAC STA12X30S is a compact single-acting pull-type cylinder that uses compressed air to retract the 6 mm rod, while an internal spring pushes it back out. At 0.5 MPa it delivers 32.4 N of net pull force, making it suitable for light-duty tensioning and return-to-open tasks. The short riveted body saves axial mounting depth where round-body or profile cylinders will not fit.
This 12 mm bore model includes a built-in piston magnet for position sensing with AirTAC reed or electronic switches. End-of-stroke deceleration is handled by a fixed NBR bumper, which absorbs shock but is not an adjustable cushion or a locking device. It operates at 50-500 mm/s and requires at least 0.2 MPa of air pressure to overcome the internal spring.
Airtac STA Single Acting Compact Guided Cylinder STA12X30S Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA12X30S |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø12 mm |
| Stroke | 30 mm |
| Acting type | Single acting, pull type |
| Port size | M5×0.8 |
| Rod end thread | M3×0.5 female / M5×0.8 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 (Ø12mm, Pull)
| Pressure | Pull force (net) |
|---|---|
| 0.5 MPa | 32 N |
| 0.7 MPa | 49 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 STA12X30S
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 12 | 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 STA12X30S Is Used
Light Tensioning
Pulls light cables or filaments taut with 32.4 N of force, releasing tension instantly when air pressure is vented.
Gate Diversion
Retracts a small guide flap on a conveyor line to let parts pass, using the internal spring to snap the gate back open.
Flap Hold-Down
Holds a carton flap open against spring pressure during filling, then releases the flap to spring closed when the rod extends.
Is the Airtac STA Single Acting Compact Guided Cylinder STA12X30S the Right Cylinder?
When sizing this model, consider the adjacent bore options. If 32.4 N of net pull at 0.5 MPa is insufficient, stepping up to the STA16 provides 66.4 N. Conversely, the 12 mm bore is the smallest available in this series, offering the most compact footprint. A safe working load is approximately 19 N, or a vertical lift of about 1.7 kg with a 2:1 margin.
This configuration features a 30 mm stroke, the maximum standard stroke available for the STA series. It uses an M5x0.8 port and a female M3x0.5 rod-end thread. The S suffix confirms the integrated magnet for switch mounting. Remember that the spring extends the rod when air is removed, so it will not hold a mid-stroke load without external pressure or a mechanical 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 STA12X30S FAQ
The net pull force is 32.4 N at 0.5 MPa and 49.4 N at 0.7 MPa. These figures already account for the force lost to overcoming the internal return spring.
No. The spring drives the rod to its extended rest position on air loss. It requires at least 0.2 MPa to retract the rod and cannot hold a mid-stroke load without an external locking device.
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