Airtac STA Single Acting Compact Guided Cylinder STA63X25S
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA63X25S is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø63mm 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.
- BoreØ63 mm
- Stroke25 mm
- Port sizePT1/4
- Acting typeSingle acting, pull type
- Rod threadM10×1.5 (F) / M18×1.5 (B)
- CushionFixed NBR bumper
About the Airtac STA Single Acting Compact Guided Cylinder STA63X25S
The AirTAC STA63X25S is a compact single-acting pull-type cylinder where air retracts the 20 mm piston rod and an internal spring extends it back out. Delivering 1225.5 N of net pull at 0.5 MPa (1786.2 N at 0.7 MPa), it uses a short riveted body to save axial mounting depth where larger profile cylinders cannot fit.
This 63 mm bore model requires only one PT1/4 air line and a single solenoid port to operate. The included -S piston magnet enables position detection via AirTAC reed or electronic switches, while a fixed NBR bumper decelerates the stroke ends without acting as a lock.
Airtac STA Single Acting Compact Guided Cylinder STA63X25S Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA63X25S |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø63 mm |
| Stroke | 25 mm |
| Acting type | Single acting, pull type |
| Port size | PT1/4 |
| Rod end thread | M10×1.5 female / M18×1.5 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 (Ø63mm, Pull)
| Pressure | Pull force (net) |
|---|---|
| 0.5 MPa | 1226 N |
| 0.7 MPa | 1786 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 STA63X25S
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 63 | 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 STA63X25S Is Used
Heavy Pallet Gate Return
Uses the 1225.5 N net pull to retract a heavy loaded pallet guide, letting the internal spring push the gate open safely when air is removed.
Industrial Press Hold-Down
Pulls a thick steel plate down against a fixture with 1786.2 N at 0.7 MPa, releasing the clamp instantly via spring extension upon venting.
Material Tensioning Arm
Draws a heavy tensioning pulley inward to slacken a drive belt, with the spring maintaining constant outward tension during normal operation.
Is the Airtac STA Single Acting Compact Guided Cylinder STA63X25S the Right Cylinder?
When sizing this model, compare its 1225.5 N net pull at 0.5 MPa against the next size down: the STA50 provides 717.7 N. A safe working load is roughly 735 N (about 60 percent of the 0.5 MPa figure), allowing a vertical lift of approximately 62.5 kg with a 2:1 margin. Note that strokes are capped at 30 mm for this series.
Because the spring constantly drives the rod out, the STA63X25S will not hold a mid-stroke load on air loss; it fails to the extended position. Confirm your build needs the 25 mm stroke, PT1/4 port, female M10x1.5 rod thread, and the built-in 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 STA63X25S FAQ
The net pull force is 1225.5 N at 0.5 MPa and 1786.2 N at 0.7 MPa. These figures already account for the internal return spring. Operating pressure must be between 0.2 and 1.0 MPa, as a minimum of 0.2 MPa is required to overcome the spring.
Air pressure retracts the rod, while the internal spring extends it to the resting position. The -S option includes a built-in piston magnet for use with AirTAC reed or electronic solid-state switches. The cylinder does not hold mid-stroke loads without live air pressure.
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