Airtac STA Single Acting Compact Guided Cylinder STA50X15
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA50X15 is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø50mm 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.
- BoreØ50 mm
- Stroke15 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 STA50X15
The AirTAC STA50X15 is a compact single-acting pull-type cylinder where air retracts the rod and an internal spring extends it back out. It provides a net pull of 717.7 N at 0.5 MPa, making it suitable for heavy tensioning tasks. The short riveted body saves axial mounting depth where a standard round-body cylinder will not fit.
This 50 mm bore model uses a PT1/4 air port and a 20 mm piston rod. Because this specific SKU lacks the -S magnet code, it cannot accept reed or electronic switches. The end shock is managed by a fixed NBR bumper that decelerates the stroke, rather than an adjustable air cushion.
Airtac STA Single Acting Compact Guided Cylinder STA50X15 Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA50X15 |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø50 mm |
| Stroke | 15 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 (Ø50mm, Pull)
| Pressure | Pull force (net) |
|---|---|
| 0.5 MPa | 718 N |
| 0.7 MPa | 1048 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 STA50X15
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 50 | 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 STA50X15 Is Used
Heavy-Duty Tensioning
Pulls heavy cables or straps with 717.7 N net force at 0.5 MPa, releasing tension instantly when air is removed.
Pallet Gate Return
Holds a safety gate open via spring extension, using the 15 mm stroke to retract the latch pin securely under air pressure.
Vertical Lift Hold
Lifts a 36.6 kg load vertically with a 2:1 safety margin before venting air to lower the mass via spring extension.
Is the Airtac STA Single Acting Compact Guided Cylinder STA50X15 the Right Cylinder?
When sizing this model, compare its 717.7 N net pull at 0.5 MPa against adjacent bores. Stepping down, the STA40 yields 445.1 N, while stepping up to the STA63 provides 1225.5 N. A safe working load is approximately 431 N, which allows a vertical lift of about 36.6 kg with a 2:1 margin.
Remember the 30 mm maximum standard stroke ceiling and the spring-extend behavior: if air pressure drops, the spring drives the rod out and cannot hold a mid-stroke load. This base configuration has a female M10x1.5 rod-end thread and no magnet. If you require position sensing, select the -S option, or choose the male M18x1.5 thread (-B) for different mounting requirements.
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 STA50X15 FAQ
This cylinder delivers a net pull of 717.7 N at 0.5 MPa and 1047.5 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.
No, this specific SKU does not include the -S magnet code, so it cannot accept reed or electronic switches. You must select the -S variant if you require position sensing capabilities.
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