Airtac STA Single Acting Compact Guided Cylinder STA40X25SB
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA40X25SB is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø40mm 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.
- BoreØ40 mm
- Stroke25 mm
- Port sizePT1/8
- Acting typeSingle acting, pull type
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- CushionFixed NBR bumper
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac STA Single Acting Compact Guided Cylinder STA40X25SB
The AirTAC STA40X25SB is a compact single-acting pull-type cylinder where compressed air retracts the 16 mm rod and an internal spring pushes it back out. It yields 445.1 N of net pull at 0.5 MPa (656.2 N at 0.7 MPa), with the spring force already subtracted from the pneumatic effort. The short riveted body saves valuable axial mounting depth where a round-body unit will not fit.
This specific configuration includes a built-in piston magnet for AirTAC reed or electronic switches and a male M14x1.5 rod thread. A fixed NBR bumper decelerates the stroke end, operating effectively between 0.2 and 1.0 MPa at speeds of 50-500 mm/s.
Airtac STA Single Acting Compact Guided Cylinder STA40X25SB Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA40X25SB |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 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 STA40X25SB
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 40 | 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 STA40X25SB Is Used
Tension Web Material
Uses the 445.1 N net pull to draw back a tensioning roller on a film line, with the spring extending to release tension when air is removed.
Hold-Down Clamping
Pulls a clamp down to secure cartons for strapping, relying on the male M14x1.5 thread for a robust fixture and the compact body for tight machine frames.
Gate Return Mechanism
Air retracts the rod to open a diverter gate, allowing the internal spring to push it back to the closed position for fail-safe sorting operations.
Is the Airtac STA Single Acting Compact Guided Cylinder STA40X25SB the Right Cylinder?
When sizing this 40 mm bore, verify if the 445.1 N net pull at 0.5 MPa suits your tensioning load. Stepping down, the STA32 provides 290.1 N, while stepping up to the STA50 yields 717.7 N. This model features a 25 mm stroke, safely under the 30 mm single-acting ceiling.
Remember the spring drives the rod out upon air loss, so it will not hold a mid-stroke load without live pressure or an external lock. This STA40X25SB variant includes the -S magnet and -B male M14x1.5 rod thread, utilizing a PT1/8 port.
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 STA40X25SB FAQ
The STA40X25SB provides 445.1 N net pull at 0.5 MPa and 656.2 N at 0.7 MPa. It requires an operating pressure of 0.2-1.0 MPa, needing at least 0.2 MPa to overcome the internal return spring.
Air pressure retracts the rod while the internal spring extends it. The -S code denotes a built-in magnet for position sensing with AirTAC reed or electronic switches. The spring extends the rod fully on air loss, so it cannot hold a mid-stroke load without an external device.
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Standard models are processed and dispatched in 3-5 business days.
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