Airtac STA Single Acting Compact Guided Cylinder STA63X25
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA63X25 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 STA63X25
The AirTAC STA63X25 is a compact single-acting pull-type cylinder where air retracts the rod and an internal spring extends it back out. It provides a robust 1225.5 N net pull at 0.5 MPa, making it suitable for heavy-duty tensioning tasks. The quoted force is already net of the return spring, so you can size directly to this value.
Featuring a 63 mm bore, this unit uses a PT1/4 air port and a 20 mm piston rod. The short riveted body saves axial mounting depth where a standard round-body cylinder will not fit. It relies on a fixed NBR bumper to decelerate the stroke end, rather than an adjustable air cushion.
Airtac STA Single Acting Compact Guided Cylinder STA63X25 Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA63X25 |
|---|---|
| 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 STA63X25
| 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 STA63X25 Is Used
Heavy Web Tensioning
Uses the 1225.5 N net pull to maintain consistent tension on thick material webs during processing.
Pallet Gate Return
Spring-extends to safely open a heavy pallet gate, while air retracts it to clear the floor space.
Lift Arm Counterweight
Pulls a loaded vertical lift arm inward against gravity, yielding a safe working load of about 735 N.
Is the Airtac STA Single Acting Compact Guided Cylinder STA63X25 the Right Cylinder?
When sizing this model, consider the neighboring bores. Stepping down, the STA50 provides 717.7 N net pull at 0.5 MPa, while the STA63X25 offers 1225.5 N at the same pressure. This specific SKU has no piston magnet (-S option absent), meaning it cannot accept reed or electronic switches. It features a female M10x1.5 rod-end thread and a 25 mm stroke, well within the 30 mm maximum standard stroke ceiling.
Remember that the internal spring drives the rod to its extended rest position upon air loss; it does not hold a mid-stroke load. Operating pressure must be 0.2-1.0 MPa, needing at least 0.2 MPa to overcome the spring force. For a held mid-stroke load, select a double-acting SDA with an external rod lock.
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 STA63X25 FAQ
This cylinder delivers a net pull of 1225.5 N at 0.5 MPa and 1786.2 N at 0.7 MPa. These figures already subtract the return spring force, and the cylinder requires a minimum of 0.2 MPa to overcome the spring.
No, this specific SKU lacks the built-in piston magnet. You must select the -S variant to use AirTAC reed or electronic switches for position sensing.
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Related AirTAC STA Cylinders
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