Airtac STA Single Acting Compact Guided Cylinder STA16X20SB
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA16X20SB 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 STA16X20SB
The AirTAC STA16X20SB is a compact single-acting pull-type cylinder where air retracts the rod and an internal spring extends it. It provides 66.4 N of net pull at 0.5 MPa, meaning the spring force is already subtracted from the pneumatic effort. This unit includes a built-in magnet for position sensing and a male M5x0.8 piston rod thread.
Its short riveted body saves valuable axial mounting depth where standard round-body or profile cylinders cannot fit. The end-of-stroke deceleration is handled by a fixed NBR bumper, not an adjustable air cushion. With a safe working load around 40 N, it easily manages vertical lifts of approximately 3.4 kg using a 2:1 safety margin.
Airtac STA Single Acting Compact Guided Cylinder STA16X20SB Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA16X20SB |
|---|---|
| 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 STA16X20SB
| 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 STA16X20SB Is Used
Tension Gate Closure
Uses the 66.4 N net pull to draw a lightweight conveyor diverter gate inward, letting the internal spring push it back to the open rest position between cycles.
Film Clamp Release
Pulls a packaging film tensioning arm out of the way via the male M5x0.8 rod thread, relying on spring extension to re-engage the clamp when air is removed.
Sorter Diverter Return
Retracts a short-stroke sorting flap in a compact logistics chute, utilizing the space-saving riveted body to fit within tight conveyor framework clearances.
Is the Airtac STA Single Acting Compact Guided Cylinder STA16X20SB the Right Cylinder?
When sizing this 16 mm bore, compare its 66.4 N net pull at 0.5 MPa against adjacent models. Stepping down to the STA12 yields 32.4 N, while stepping up to the STA20 provides 108.9 N. This STA16X20SB features a 20 mm stroke, safely below the 30 mm maximum ceiling for the series.
Because the spring drives the rod out upon air loss, this cylinder does not hold a mid-stroke load without live pressure. Confirm the 16 mm bore, 20 mm stroke, M5x0.8 port, male M5x0.8 rod thread, and the built-in magnet for reed or electronic switches for your assembly.
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 STA16X20SB FAQ
This cylinder delivers 66.4 N of net pull at 0.5 MPa and 101 N at 0.7 MPa. It requires an operating pressure of 0.2-1.0 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 out at rest. The -S code indicates a built-in piston magnet for use with AirTAC reed or electronic switches, and the -B code specifies the male M5x0.8 rod thread.
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