Airtac STA Single Acting Compact Guided Cylinder STA40X5S
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA40X5S is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø40mm bore and 5mm 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
- Stroke5 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 STA40X5S
The AirTAC STA40X5S is a compact single-acting pull-type cylinder where air retracts the 16 mm rod and an internal spring pushes it back out. It delivers 445.1 N of net pull at 0.5 MPa, meaning the spring force is already subtracted from the pneumatic rating. This 5 mm stroke unit fits perfectly into tight machinery layouts because its short riveted body saves significant axial mounting depth compared to standard round-body alternatives.
Equipped with a built-in piston magnet (the -S option), this model supports AirTAC reed or electronic solid-state switches mounted directly into the body sensor grooves. End-of-stroke impact is managed by a fixed NBR bumper that decelerates the piston, which is not an adjustable air cushion. Operating pressure spans 0.2 to 1.0 MPa, requiring at least 0.2 MPa to overcome the internal spring.
Airtac STA Single Acting Compact Guided Cylinder STA40X5S Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA40X5S |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 5 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 STA40X5S
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×5 | 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 STA40X5S Is Used
Tension Pull-Back
Uses the 445.1 N net pull to draw tensioning cables or belts tight, relying on the spring to slacken them when air is removed.
Hold-Down Release
Pulls a 16 mm rod inward to release clamped parts, allowing the internal spring to snap the clamp open at rest.
Gate Retraction
Draws a short 5 mm diverter gate out of the product flow path, with the spring extending it back to block traffic upon air loss.
Is the Airtac STA Single Acting Compact Guided Cylinder STA40X5S the Right Cylinder?
When sizing this 40 mm bore, compare its 445.1 N net pull at 0.5 MPa against adjacent bores: the STA32 yields 290.1 N, while the STA50 provides 717.7 N. A safe working load is approximately 267 N (about 60 percent of the 0.5 MPa figure), translating to a vertical lift capacity of roughly 22.7 kg with a 2:1 safety margin. This specific configuration features a 5 mm stroke, well under the 30 mm single-acting ceiling, a PT1/8 port, a female M8x1.25 rod-end thread, and the -S magnet for position sensing.
Remember that the spring constantly drives the rod to the extended position. If air pressure drops, the STA40X5S fails safely to this extended state but cannot hold a mid-stroke load. For applications requiring a locked intermediate position without live air, a double-acting SDA cylinder paired with an external rod lock is necessary.
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 STA40X5S FAQ
The STA40X5S 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, so you can size directly to these values.
Air pressure retracts the rod while the internal spring extends it. It requires a minimum of 0.2 MPa operating pressure to overcome the spring. The included -S magnet works with AirTAC reed or electronic switches for end-position detection.
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