Airtac STA Single Acting Compact Guided Cylinder STA16X15S
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA16X15S is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø16mm bore and 15mm 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
- Stroke15 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 STA16X15S
The AirTAC STA16X15S is a compact single-acting pull-type cylinder where air retracts the 6 mm rod and an internal spring extends it back out. It provides 66.4 N of net pull at 0.5 MPa, making it suitable for 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 includes a built-in piston magnet (-S) for position sensing with AirTAC reed or electronic switches. The short riveted body saves axial mounting depth where a standard round-body cylinder will not fit. It uses a fixed NBR bumper to decelerate the stroke end, operating at speeds of 50-500 mm/s.
Airtac STA Single Acting Compact Guided Cylinder STA16X15S Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA16X15S |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø16 mm |
| Stroke | 15 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 STA16X15S
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×15 | 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 STA16X15S Is Used
Clamp Retraction
Uses the 66.4 N net pull to draw a small machining clamp backward against spring pressure, releasing the part when air is cut.
Diverter Gate Return
Pulls a lightweight sorting gate inward to clear the conveyor lane, relying on the internal spring to push the gate back out.
Film Tensioning
Maintains steady tension on a packaging film feed by pulling the idler arm in, with the spring extending it to take up slack.
Is the Airtac STA Single Acting Compact Guided Cylinder STA16X15S the Right Cylinder?
When sizing this 16 mm bore, compare it both ways: stepping down to the STA12 yields 32.4 N net pull at 0.5 MPa, while stepping up to the STA20 provides 108.9 N. This STA16X15S sits comfortably in the middle, offering a safe working load of roughly 40 N (about 60% of its 66.4 N rating) or a vertical lift of approximately 3.4 kg with a 2:1 margin.
Keep in mind the 30 mm maximum standard stroke ceiling and the spring-extend behavior. If air pressure drops, the spring drives the rod out to the extended rest position, meaning it cannot hold a mid-stroke load without an external locking device. This configuration features a 15 mm stroke, an M5x0.8 port, a female M3x0.5 rod-end thread, and the -S magnet for switch mounting.
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 STA16X15S FAQ
The net pull force is 66.4 N at 0.5 MPa and 101 N at 0.7 MPa. These values already have the return spring force subtracted, so you can size your load directly to these figures.
Air pressure retracts the rod, and you need at least 0.2 MPa to overcome the internal spring. When air is released, the spring pushes the rod back out to the extended position, meaning it will not hold a load mid-stroke without an external device.
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