Airtac STA Single Acting Compact Guided Cylinder STA16X20S
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA16X20S is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø16mm bore and 20mm 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
- Stroke20 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 STA16X20S
The AirTAC STA16X20S is a compact single-acting pull-type cylinder where air retracts the rod and an internal spring pushes it back out. It yields 66.4 N of net pull at 0.5 MPa, making it suitable for light tensioning duties. Because the spring performs the extension stroke, only one M5x0.8 air line and solenoid port are required.
This unit features a 16 mm bore, a 20 mm stroke, and a built-in piston magnet for position sensing. The short riveted body drastically reduces axial mounting depth compared to traditional round-body cylinders. A fixed NBR bumper decelerates the stroke ends, and the unit operates at speeds between 50 and 500 mm/s.
Airtac STA Single Acting Compact Guided Cylinder STA16X20S Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA16X20S |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø16 mm |
| Stroke | 20 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 STA16X20S
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×20 | 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 STA16X20S Is Used
Clamp Retraction
Uses the 66.4 N net pull to draw a lightweight machining clamp clear of the workpiece before the spring pushes it back to a safe open rest.
Gate Return Tension
Air pulls a diverter gate closed against product flow on a conveyor, while the internal spring automatically extends it open when air is removed.
Film Hold-Down
Tensions and pulls a packaging film guide during the wrap cycle, relying on the compact 16 mm body to fit within tight tooling clearances.
Is the Airtac STA Single Acting Compact Guided Cylinder STA16X20S the Right Cylinder?
When sizing this model, compare its 66.4 N net pull at 0.5 MPa against adjacent bores: the STA12 offers 32.4 N, while the STA20 provides 108.9 N. A safe working load is roughly 40 N, which allows a vertical lift of about 3.4 kg with a 2:1 margin. The standard stroke ceiling is 30 mm.
This configuration includes the -S magnet for reed or electronic switches and a female M3x0.5 rod-end thread on its 6 mm rod. Remember that the spring drives the rod to the extended position on air loss; it will not hold a mid-stroke load. Operating pressure must be 0.2-1.0 MPa to overcome the spring.
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 STA16X20S FAQ
The net pull force is 66.4 N at 0.5 MPa and 101 N at 0.7 MPa. These figures already account for the internal return spring, meaning this is the actual usable force generated by the air during the retraction stroke.
Air pressure retracts the 6 mm rod, and the internal spring extends it. You must supply at least 0.2 MPa to overcome the spring. If air is lost, the spring drives the rod to the extended position, so it cannot hold a mid-stroke load without external devices.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC STA Cylinders
Request a Quote for Airtac STA Single Acting Compact Guided Cylinder STA16X20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.