Airtac STA Single Acting Compact Guided Cylinder STA50X30B
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA50X30B is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø50mm bore and 30mm 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
- Stroke30 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 STA50X30B
The AirTAC STA50X30B is a compact single-acting pull-type cylinder where compressed air retracts the rod and an internal spring pushes it back out. It generates 717.7 N of net pull at 0.5 MPa, reaching 1047.5 N at 0.7 MPa. This makes it suitable for heavy-duty tensioning, clamping, or return-to-open mechanisms within a tight footprint.
Because the quoted force is already net of the return spring, you can size directly to these values. The short riveted body saves axial mounting depth where a standard round-body cylinder will not fit. This specific SKU features a male M18x1.5 piston rod thread and lacks a piston magnet, meaning it cannot accept reed or electronic switches without the -S option.
Airtac STA Single Acting Compact Guided Cylinder STA50X30B Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA50X30B |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø50 mm |
| Stroke | 30 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 STA50X30B
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×30 | 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 STA50X30B Is Used
Heavy-Duty Tensioning
Pulls heavy cables or belts taut with 717.7 N of force, releasing tension instantly when air pressure is removed.
Pallet Gate Return
Holds a loading dock gate open via air retraction, allowing the internal spring to safely close it during power loss.
Film Roll Hold-Down
Maintains downward tension on large packaging film rolls using the male M18x1.5 rod, preventing material slack.
Is the Airtac STA Single Acting Compact Guided Cylinder STA50X30B the Right Cylinder?
When sizing this model, consider the neighboring bores: the STA40 provides 445.1 N net pull at 0.5 MPa, while the larger STA63 offers 1225.5 N. A practical safe working load is roughly 431 N, assuming about 60 percent of the 717.7 N figure, which translates to a vertical lift capacity near 36.6 kg with a 2:1 safety margin.
This 50 mm bore variant uses a PT1/4 air port and a 20 mm rod. The 30 mm stroke hits the maximum standard limit for this series. Remember that on air loss the internal spring drives the rod to its extended position, so it will not hold a mid-stroke load without an external locking device. The fixed NBR bumper decelerates the stroke end but is not an adjustable cushion.
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 STA50X30B FAQ
This cylinder provides a net pull force of 717.7 N at 0.5 MPa and 1047.5 N at 0.7 MPa. It requires an operating pressure between 0.2 and 1.0 MPa, with a minimum of 0.2 MPa needed to overcome the internal return spring.
No, this specific SKU does not include a piston magnet, so it cannot accept reed or electronic switches. You would need to select the STA50X30BS variant to enable sensor integration along the body grooves.
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