Airtac STA Single Acting Compact Guided Cylinder STA12X15SB
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA12X15SB is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø12mm bore and 15mm 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
- Stroke15 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 STA12X15SB
The AirTAC STA12X15SB is a compact single-acting pull-type cylinder where compressed air retracts the rod and an internal spring pushes it back out. It provides 32.4 N of net pull at 0.5 MPa, meaning the spring force is already subtracted from the pneumatic effort. This 12 mm bore unit requires only one M5x0.8 air line and a single solenoid port to function, simplifying plumbing.
Designed for tight spaces, the short riveted body minimizes axial mounting depth compared to round-body alternatives. The stroke runs 15 mm within a 50-500 mm/s speed range, decelerating against a fixed NBR bumper at the end of travel. Equipped with a built-in magnet (-S) for AirTAC reed or electronic switches, it features a male M5x0.8 rod thread (-B) instead of the standard female M3x0.5.
Airtac STA Single Acting Compact Guided Cylinder STA12X15SB Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA12X15SB |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø12 mm |
| Stroke | 15 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 STA12X15SB
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×15 | 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 STA12X15SB Is Used
Light-Part Clamping
Uses the 32.4 N net pull to draw back and release small electronic components during automated assembly.
Package Deflector
Air retracts the rod to pull a guide out of the way, letting the spring extend it to divert light boxes on a line.
Film Tensioning
Maintains steady tension on packaging film by pulling the load in, with the spring providing a consistent return force.
Is the Airtac STA Single Acting Compact Guided Cylinder STA12X15SB the Right Cylinder?
When sizing this model, consider the neighboring bore options. Stepping up to the STA16 yields 66.4 N of net pull at 0.5 MPa, while the 12 mm bore is the smallest available in this series, making it the baseline for ultra-light tensioning tasks. With a safe working load around 19 N (roughly 60% of the 32.4 N figure), it is best suited for light vertical lifts of about 1.7 kg with a 2:1 safety margin.
Remember that the 15 mm stroke sits well below the 30 mm maximum limit for this series. Because the spring drives the rod out when air is removed, this cylinder does not hold a mid-stroke load without live pressure. Confirm your requirements for the M5x0.8 port, the male M5x0.8 rod thread, and the magnetic switch option before finalizing.
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 STA12X15SB FAQ
This model provides a net pull force of 32.4 N at 0.5 MPa and 49.4 N at 0.7 MPa. These figures already account for the internal return spring resistance.
Air pressure retracts the rod, and you need at least 0.2 MPa to overcome the spring. When air is released, the spring extends the rod back out, meaning it will not hold a mid-stroke position without live pressure.
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