Airtac STA Single Acting Compact Guided Cylinder STA50X5
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA50X5 is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø50mm bore and 5mm 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
- Stroke5 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 STA50X5
The AirTAC STA50X5 is a compact single-acting pull-type cylinder where air retracts the rod and an internal spring extends it out. It delivers 717.7 N of net pull at 0.5 MPa, making it highly effective for heavy tensioning and return-to-open duties. Because the quoted force is already net of the spring, you can size directly to this value.
This model features a short riveted body that saves axial mounting depth where a round-body cylinder will not fit. It uses a fixed NBR bumper to decelerate the stroke end, which is not an adjustable air cushion. The 50 mm bore sets a PT1/4 port and a 20 mm rod, requiring only one air line and one solenoid port for operation.
Airtac STA Single Acting Compact Guided Cylinder STA50X5 Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA50X5 |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø50 mm |
| Stroke | 5 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 STA50X5
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×5 | 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 STA50X5 Is Used
Heavy-Duty Tensioning
Apply 717.7 N of pull at 0.5 MPa to draw taut heavy straps or cables, with the internal spring automatically relaxing tension when air is removed.
Gate Return Mechanism
Use the spring-extend function to hold a conveyor diverter gate open, applying pneumatic pull only to close it against product flow.
Pallet Hold-Down
Secure pallets during wrapping by pulling a clamp down, achieving a safe working load of 431 N without requiring continuous external force.
Is the Airtac STA Single Acting Compact Guided Cylinder STA50X5 the Right Cylinder?
When sizing this model, consider the STA40 which provides 445.1 N net pull at 0.5 MPa, or step up to the STA63 offering 1225.5 N at 0.5 MPa. This STA50X5 yields a safe working load of roughly 431 N, or a vertical lift of about 36.6 kg with a 2:1 margin.
The 5 mm stroke sits well below the 30 mm series ceiling. Remember that on air loss the spring drives the rod out, so it does not hold a mid-stroke load without an external device. This base SKU lacks the S magnet option and cannot take a switch; it has a female M10x1.5 rod-end thread and operates at 50-500 mm/s.
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 STA50X5 FAQ
The STA50X5 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 of 0.2-1.0 MPa, as at least 0.2 MPa is needed to overcome the return spring.
No, this specific SKU does not include the S option for a built-in piston magnet, so it cannot accept reed or electronic switches. You would need the STA50X5S variant for position sensing capabilities.
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