Airtac STA Single Acting Compact Guided Cylinder STA40X15
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA40X15 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 STA40X15
The AirTAC STA40X15 is a compact single-acting pull-type cylinder where air retracts the rod and an internal spring extends it back out. It yields 445.1 N of net pull at 0.5 MPa, meaning the quoted force already subtracts the internal spring resistance. This thin riveted body saves axial mounting depth in tight machinery footprints.
Equipped with a 16 mm piston rod and a PT1/8 port, it cycles at 50-500 mm/s. A fixed NBR bumper decelerates the stroke end, unlike adjustable air cushions. This specific SKU lacks a piston magnet, so position sensing is not supported without the -S variant.
Airtac STA Single Acting Compact Guided Cylinder STA40X15 Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA40X15 |
|---|---|
| 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 STA40X15
| 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 STA40X15 Is Used
Tension Gate Retraction
Uses the 445.1 N pull to draw a sorting gate closed against product flow, relying on the internal spring to push it open when air is removed.
Film Roll Hold-Down
Pulls a tensioning arm back to secure packaging material, taking advantage of the short 15 mm stroke and compact riveted body.
Component Ejector Pull
Retracts a latch to release a machined part, letting the fixed NBR bumper absorb the 50-500 mm/s end shock quietly.
Is the Airtac STA Single Acting Compact Guided Cylinder STA40X15 the Right Cylinder?
Sizing this 40 mm bore requires checking both neighbors: the STA32 provides 290.1 N net pull at 0.5 MPa, while the larger STA50 offers 717.7 N at the same pressure. With a 2:1 safety margin, the STA40X15 safely handles a vertical lift of roughly 22.7 kg (about 267 N working load).
The 15 mm stroke sits well below the 30 mm single-acting ceiling. Remember the spring-extend behavior: on air loss the rod drives outward and cannot hold a mid-stroke load. This base configuration has a female M8x1.25 rod thread and no magnet.
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 STA40X15 FAQ
This cylinder provides 445.1 N of net pull at 0.5 MPa and 656.2 N at 0.7 MPa. These figures already account for the internal return spring resistance.
No, this specific SKU does not include a piston magnet. You must select the STA40X15S variant to use AirTAC reed or electronic switches for position detection.
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