Airtac STA Single Acting Compact Guided Cylinder STA40X15SB
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA40X15SB is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø40mm 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.
- BoreØ40 mm
- Stroke15 mm
- Port sizePT1/8
- Acting typeSingle acting, pull type
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- CushionFixed NBR bumper
About the Airtac STA Single Acting Compact Guided Cylinder STA40X15SB
The AirTAC STA40X15SB is a compact single-acting pull-type cylinder where compressed air retracts the 16mm rod and an internal spring pushes it back out. It yields 445.1 N of net pull at 0.5 MPa and 656.2 N at 0.7 MPa. Because the spring force is already subtracted, you can size directly to these output ratings.
This 40mm bore unit features a short riveted body that minimizes axial mounting depth in tight machinery. It includes a fixed NBR bumper to decelerate the stroke end, and the -S option provides a built-in piston magnet for position sensing with AirTAC reed or electronic switches.
Airtac STA Single Acting Compact Guided Cylinder STA40X15SB Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA40X15SB |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 mm |
| Acting type | Single acting, pull type |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 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 (Ø40mm, Pull)
| Pressure | Pull force (net) |
|---|---|
| 0.5 MPa | 445 N |
| 0.7 MPa | 656 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 STA40X15SB
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 40 | 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 STA40X15SB Is Used
Tension Gate Closure
Uses the 445.1 N net pull to retract and hold a conveyor diverter gate closed against product flow.
Carton Hold-Down
Pulls a clamping arm out of the way for carton loading, letting the spring extend to secure the flap.
Vertical Lift Return
Safely lifts a 22.7 kg vertical load with a 2:1 margin when air pulls the rod inward.
Is the Airtac STA Single Acting Compact Guided Cylinder STA40X15SB the Right Cylinder?
Selecting this model means sizing around its 445.1 N net pull at 0.5 MPa. If your tensioning task requires less force, the adjacent STA32 bore provides 290.1 N at 0.5 MPa. For heavier pulling, the STA50 offers 717.7 N at 0.5 MPa. A safe working load is roughly 267 N, allowing a vertical lift of about 22.7 kg with a 2:1 margin.
This configuration has a 15mm stroke (under the 30mm maximum), a PT1/8 port, and the -B male M14x1.5 rod end. Remember that the internal spring drives the rod out upon air loss; it will not hold a mid-stroke position without live pressure or an external 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 STA40X15SB FAQ
It provides a net pull of 445.1 N at 0.5 MPa and 656.2 N at 0.7 MPa. Operating pressure must be between 0.2 and 1.0 MPa, with at least 0.2 MPa required to overcome the internal return spring.
The -S code means it has a built-in magnet for AirTAC reed or electronic switches. The -B code specifies a male M14x1.5 piston rod end, replacing the standard female thread.
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