Airtac STA Single Acting Compact Guided Cylinder STA40X30SN
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA40X30SN is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø40mm bore and 30mm 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
- Stroke30 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 STA40X30SN
The AirTAC STA40X30SN is a compact single-acting pull-type cylinder where compressed air retracts the 16 mm piston rod and an internal spring pushes it back out. At 0.5 MPa it generates 445.1 N of net pull, increasing to 656.2 N at 0.7 MPa. This force is already netted against the return spring, meaning you size directly to these pulling values without manual subtraction.
Designed with a short riveted body, this unit saves axial mounting depth where a standard round-body cylinder will not fit. It operates at 50-500 mm/s and relies on a fixed NBR bumper at each end to decelerate the stroke. The built-in piston magnet (-S) supports position detection via AirTAC reed or electronic solid-state switches mounted in the body grooves.
Airtac STA Single Acting Compact Guided Cylinder STA40X30SN Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA40X30SN |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 STA40X30SN
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 STA40X30SN Is Used
Tension Gate Retraction
Uses the 445.1 N net pull to retract a diverter gate on a packaging line, allowing the internal spring to automatically reopen the lane when air is removed.
Vertical Hold-Down Pull
Pulls a 22.7 kg fixture securely against a vertical work surface, relying on the 16 mm rod and fixed NBR bumper to absorb the end-of-stroke shock.
Carton Flap Pulling
Draws cardboard flaps inward prior to sealing, taking advantage of the 30 mm stroke and compact riveted body to fit within tight conveyor framing.
Is the Airtac STA Single Acting Compact Guided Cylinder STA40X30SN the Right Cylinder?
When sizing this 40 mm bore, compare its 445.1 N net pull at 0.5 MPa against adjacent models. Dropping to the STA32 yields 290.1 N, while stepping up to the STA50 provides 717.7 N. A practical safe working load is roughly 267 N (about 60% of the 0.5 MPa figure), allowing a vertical lift of approximately 22.7 kg with a 2:1 safety margin.
This model uses a 30 mm stroke, the maximum standard travel for the series. Because the spring drives the rod to the extended position on air loss, the STA40X30SN will not hold a mid-stroke load without live pressure. Confirm your setup requires a PT1/8 port, a female M8x1.25 rod-end thread, and operating pressure between 0.2 and 1.0 MPa.
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 STA40X30SN FAQ
The STA40X30SN provides a net pull force of 445.1 N at 0.5 MPa and 656.2 N at 0.7 MPa. These values already account for the internal return spring, so no further force subtraction is necessary.
No, it is a single-acting pull type where the spring extends the rod when air is released. It requires at least 0.2 MPa to overcome the spring and will not lock or hold a mid-stroke load without live air pressure.
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