Airtac STA Single Acting Compact Guided Cylinder STA16X25
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA16X25 is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø16mm 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.
- BoreØ16 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typeSingle acting, pull type
- Rod threadM3×0.5 (F) / M5×0.8 (B)
- CushionFixed NBR bumper
About the Airtac STA Single Acting Compact Guided Cylinder STA16X25
The AirTAC STA16X25 is a compact single-acting pull-type cylinder where compressed air retracts the 6mm rod and an internal spring pushes it back out. It provides 66.4 N of net pull at 0.5 MPa, making it suitable for light-duty tensioning and return-to-open tasks. Because the quoted force is already net of the spring, you can size directly to this 66.4 N rating.
This unit features a short riveted body that saves axial mounting depth in tight machinery. It uses a single M5x0.8 port and a fixed NBR bumper to decelerate the stroke end. Since this specific SKU lacks the -S magnet option, it cannot accept reed or electronic switches.
Airtac STA Single Acting Compact Guided Cylinder STA16X25 Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA16X25 |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø16 mm |
| Stroke | 25 mm |
| Acting type | Single acting, pull type |
| Port size | M5×0.8 |
| Rod end thread | M3×0.5 female / M5×0.8 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 (Ø16mm, Pull)
| Pressure | Pull force (net) |
|---|---|
| 0.5 MPa | 66 N |
| 0.7 MPa | 101 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 STA16X25
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 16 | 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 STA16X25 Is Used
Tensioning Systems
Applies up to 101 N of net pulling force at 0.7 MPa to maintain belt or cable tension, releasing automatically when air pressure drops.
Hold-Down Clamps
Pulls lightweight workpieces securely into fixtures against the 66.4 N net pull rating, allowing the spring to safely release the part afterward.
Gate Return Mechanisms
Utilizes the spring-extend function to push a diverter gate open by default, using the 25 mm stroke to pull it closed only when actuated.
Is the Airtac STA Single Acting Compact Guided Cylinder STA16X25 the Right Cylinder?
When sizing this model, consider the neighboring bores: stepping down to the STA12 yields 32.4 N at 0.5 MPa, while stepping up to the STA20 provides 108.9 N. With a 2:1 safety margin, the STA16X25 offers a safe working load of roughly 40 N, capable of a vertical lift around 3.4 kg. The 25 mm stroke sits well below the 30 mm maximum standard limit for this series.
Remember that the internal spring drives the rod to its extended rest position on air loss, so it will not hold a mid-stroke load without live pressure. Operating pressure must be at least 0.2 MPa to overcome the spring. This configuration confirms a 16 mm bore, 25 mm stroke, M5x0.8 port, female M3x0.5 rod-end thread, and no piston 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 STA16X25 FAQ
The STA16X25 delivers 66.4 N of net pull at 0.5 MPa and 101 N at 0.7 MPa. These figures already account for the internal return spring resistance, so no further subtraction is needed for your sizing calculations.
No, this specific SKU does not include the -S option, meaning it lacks a piston magnet and cannot accept reed or electronic switches. You would need to specify the STA16X25S variant to enable position sensing.
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