Airtac STA Single Acting Compact Guided Cylinder STA12X25B
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA12X25B is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø12mm bore and 25mm 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
- Stroke25 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 STA12X25B
The AirTAC STA12X25B is a compact single-acting pull-type cylinder where air retracts the rod and an internal spring extends it back out. It provides 32.4 N of net pull at 0.5 MPa, safely handling a 19 N working load with a 2:1 margin. This makes it ideal for light tensioning or vertical lifts up to 1.7 kg.
This thin riveted-body design saves axial mounting depth where larger profile cylinders cannot fit. It features a male M5x0.8 piston rod, an M5x0.8 air port, and a fixed NBR bumper that decelerates the stroke end without acting as a lock.
Airtac STA Single Acting Compact Guided Cylinder STA12X25B Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA12X25B |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø12 mm |
| Stroke | 25 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 STA12X25B
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×25 | 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 STA12X25B Is Used
Light Tensioning Jig
Applies 32.4 N of net pull at 0.5 MPa to draw small components backward in a clamping jig.
Diverter Gate Return
Uses the spring-extend function to push a sorting gate open when air pressure is released.
Small Vertical Lift
Lifts light 1.7 kg loads vertically with a 2:1 safety margin using the 12 mm bore.
Is the Airtac STA Single Acting Compact Guided Cylinder STA12X25B the Right Cylinder?
When sizing this 12 mm bore model, its 32.4 N net pull at 0.5 MPa sits at the bottom of the range. Stepping up to the STA16 increases the pull force to 66.4 N at 0.5 MPa, while the STA12 is the smallest available bore. The 25 mm stroke is well within the 30 mm standard limit.
Remember that the spring drives the rod out upon air loss, so it cannot hold a mid-stroke load without external devices. This specific SKU includes the -B male M5x0.8 rod thread but lacks the -S magnet, meaning it cannot accept position switches.
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 STA12X25B FAQ
This cylinder delivers 32.4 N of net pull at 0.5 MPa and 49.4 N at 0.7 MPa. It requires a minimum operating pressure of 0.2 MPa to overcome the internal return spring, with a maximum of 1.0 MPa.
No, this specific SKU lacks the -S magnet code, so it cannot accept reed or electronic switches. You would need the STA12X25BS variant for position sensing capabilities.
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