Airtac STA Single Acting Compact Guided Cylinder STA50X30SB
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA50X30SB 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 STA50X30SB
The AirTAC STA50X30SB is a compact single-acting pull-type cylinder where air retracts the rod and an internal spring pushes it back out. It yields 717.7 N of net pull at 0.5 MPa, reaching 1047.5 N at 0.7 MPa. This makes it ideal for tensioning or pulling heavy loads back to a normally extended rest state.
Designed for tight spaces, the short riveted body saves axial mounting depth compared to round-body alternatives. This specific unit includes a built-in piston magnet for position sensing and a male M18x1.5 rod thread. A fixed NBR bumper handles end-of-stroke deceleration, operating effectively at speeds between 50 and 500 mm/s.
Airtac STA Single Acting Compact Guided Cylinder STA50X30SB Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA50X30SB |
|---|---|
| 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 STA50X30SB
| 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 STA50X30SB Is Used
Heavy Gate Closing
Applies 717.7 N of net pull to draw a heavy industrial safety gate shut, relying on the spring to passively open it during an air loss failure.
Pallet Hold-Down Tensioning
Uses the 30 mm stroke to pull a tension strap tight against oversized pallet loads, securely holding components for stretch wrapping.
Vertical Lift Return
Lifts a 36.6 kg vertical load with a 2:1 safety margin, pulling the weight upward against gravity before the spring pushes it back down.
Is the Airtac STA Single Acting Compact Guided Cylinder STA50X30SB the Right Cylinder?
When sizing this actuator, compare its 717.7 N net pull at 0.5 MPa against adjacent bores: the STA40 provides 445.1 N, while the STA63 offers 1225.5 N. Based on the 717.7 N figure, a safe working load is roughly 431 N, allowing a vertical lift of about 36.6 kg with a 2:1 safety margin. This model uses the maximum standard stroke of 30 mm.
Remember that the internal spring drives the rod out when air is removed, meaning it cannot hold a mid-stroke load without live pressure. This STA50X30SB configuration includes the -S magnet for reed or electronic switches and the -B male M18x1.5 rod thread. It requires a minimum operating pressure of 0.2 MPa to overcome the return spring, utilizing a PT1/4 port.
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 STA50X30SB FAQ
This cylinder provides a net pull force of 717.7 N at 0.5 MPa and 1047.5 N at 0.7 MPa. The operating pressure range is 0.2 to 1.0 MPa, requiring at least 0.2 MPa to overcome the internal return spring.
Air pressure retracts the rod, while the internal spring extends it to its normally out position. The included -S magnet allows tracking with AirTAC reed or electronic switches, and the -B option provides a male M18x1.5 rod end.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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