Airtac STA Single Acting Compact Guided Cylinder STA12X15S
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA12X15S 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 STA12X15S
The AirTAC STA12X15S is a compact single-acting pull-type cylinder where air retracts the 6 mm rod and an internal spring extends it out. It provides 32.4 N of net pull at 0.5 MPa, meaning the quoted force already subtracts the spring resistance. This 12 mm bore actuator uses a single M5x0.8 air line, simplifying plumbing by letting the spring handle the return motion.
Its short riveted body minimizes axial mounting depth, fitting easily where standard profile cylinders cannot. The piston features a built-in magnet for position sensing, and a fixed NBR bumper absorbs end-of-stroke shock without adding adjustable cushion complexity.
Airtac STA Single Acting Compact Guided Cylinder STA12X15S Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA12X15S |
|---|---|
| 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 STA12X15S
| 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 STA12X15S Is Used
Light-Part Clamping
Uses the 32.4 N net pull to draw small workpieces into a fixture, relying on the spring to release the clamp when air pressure drops.
Package Deflector
Retracts a sorting gate to let lightweight cartons pass on a belt, with the internal spring automatically extending the gate back into the flow path.
Lab Test Tensioning
Applies a steady pulling force on small material samples, taking advantage of the 6 mm rod and compact footprint within tight test rigs.
Is the Airtac STA Single Acting Compact Guided Cylinder STA12X15S the Right Cylinder?
When sizing this actuator, the 32.4 N net pull at 0.5 MPa yields a safe working load of roughly 19 N, or a vertical lift of about 1.7 kg with a 2:1 margin. If your application requires less force, note there is no smaller STA bore available. If you need more power, stepping up to the STA16 increases the 0.5 MPa net pull to 66.4 N.
This 15 mm stroke sits well below the 30 mm series maximum. Because the spring drives the rod to the extended position on air loss, this model cannot hold a mid-stroke load without external locking. Confirm your required specifications: 12 mm bore, 15 mm stroke, M5x0.8 port, built-in S magnet for reed or electronic switches, and female M3x0.5 rod-end 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 STA12X15S FAQ
This cylinder delivers 32.4 N of net pull at 0.5 MPa and 49.4 N at 0.7 MPa. These figures already account for the internal return spring resistance, so you can size directly to these values.
Air pressure retracts the rod, requiring a minimum of 0.2 MPa to overcome the spring. When air is released, the spring pushes the rod back out. The built-in S magnet allows tracking with reed or electronic switches.
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