Airtac STA Single Acting Compact Guided Cylinder STA16X25S
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA16X25S 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 STA16X25S
The AirTAC STA16X25S is a compact single-acting pull-type cylinder where air retracts the rod and an internal spring extends it back out. It yields 66.4 N of net pull at 0.5 MPa, making it suitable for tensioning and return-to-open tasks. The short riveted body saves axial mounting depth where larger profile cylinders cannot fit.
This unit includes a built-in piston magnet for AirTAC reed or electronic switches. It runs on a single M5x0.8 air line, and a fixed NBR bumper decelerates the stroke end without acting as a lock. The Ø6 mm piston rod features an M3x0.5 female thread.
Airtac STA Single Acting Compact Guided Cylinder STA16X25S Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA16X25S |
|---|---|
| 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 STA16X25S
| 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 STA16X25S Is Used
Tension Gate Release
Uses the 66.4 N pull to retract a tensioned diverter gate on a packaging line, letting the internal spring push it back to the open position when air is cut.
Film Roll Hold-Down
Pulls a clamping arm inward to secure wrapping material, relying on the compact 16 mm body to fit within tight machinery frames.
Light-Part Withdrawal
Draws a small machined component out of a fixture during automated unloading, safely handling loads around 40 N with a 2:1 margin.
Is the Airtac STA Single Acting Compact Guided Cylinder STA16X25S the Right Cylinder?
When sizing this model, consider the neighboring bores: stepping down to the STA12 provides 32.4 N at 0.5 MPa, while moving up to the STA20 offers 108.9 N. The 25 mm stroke sits safely below the 30 mm maximum standard limit. Because the spring drives the rod out upon air loss, the STA16X25S does not hold a mid-stroke load without external devices.
This specific configuration includes the -S magnet code for position sensing and the default female rod thread. Operating pressure must be at least 0.2 MPa to overcome the return spring, with a maximum speed of 500 mm/s. Confirm your port size (M5x0.8) and thread requirements before ordering.
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 STA16X25S FAQ
The net pull force is 66.4 N at 0.5 MPa and 101 N at 0.7 MPa. It requires an operating pressure of 0.2 to 1.0 MPa, as at least 0.2 MPa is needed to overcome the internal return spring.
Air pressure retracts the rod while the internal spring extends it. The -S code indicates a built-in magnet compatible with AirTAC reed or electronic switches. Upon air loss, the spring drives the rod to the extended position and will not hold a mid-stroke load.
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