Airtac STA Single Acting Compact Guided Cylinder STA16X20B
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA16X20B 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 STA16X20B
The AirTAC STA16X20B is a compact single-acting pull-type cylinder. Air pressure retracts the 6 mm rod, while an internal spring extends it back out at rest. It provides 66.4 N of net pull at 0.5 MPa, a figure already accounting for the spring force. The short riveted body saves axial mounting depth where a standard round-body cylinder will not fit.
This specific SKU includes a male M5x0.8 rod thread and lacks a piston magnet. End-of-travel deceleration relies on a fixed NBR bumper, which absorbs shock but 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 STA16X20B Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA16X20B |
|---|---|
| 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 STA16X20B
| 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 STA16X20B Is Used
Tensioning Levers
Uses the 66.4 N net pull to draw linkages inward, with the internal spring automatically returning the mechanism to an open state.
Gate Retraction
Air pulls the diverter gate closed against flow, and the spring safely extends it back open if pneumatic pressure drops.
Package Hold-Down
Draws a light 3.4 kg hold-down arm away to release cartons, relying on the compact body to fit within tight conveyor framing.
Is the Airtac STA Single Acting Compact Guided Cylinder STA16X20B the Right Cylinder?
When sizing this 16 mm bore, compare its 66.4 N net pull at 0.5 MPa against neighboring bores. Dropping down to the STA12 yields 32.4 N, while stepping up to the STA20 provides 108.9 N. A practical safe working load is roughly 40 N, allowing a vertical lift of about 3.4 kg with a 2:1 safety margin.
The 20 mm stroke sits well below the 30 mm series ceiling. Because the spring drives the rod out upon air loss, this unit cannot hold a mid-stroke load without an external locking device. Confirm your bore, stroke, M5x0.8 port, male M5x0.8 rod thread, and lack of a magnetic sensor for this configuration.
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 STA16X20B FAQ
This cylinder delivers 66.4 N of net pull at 0.5 MPa and 101 N at 0.7 MPa. These values already subtract the return spring force, so you size directly to these net figures.
No, this specific SKU lacks the -S option and has no piston magnet, so it cannot take reed or electronic switches. You must select the -S variant to enable position sensing.
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