Airtac STA Single Acting Compact Guided Cylinder STA50X15S
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA50X15S 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 STA50X15S
The AirTAC STA50X15S is a compact single-acting pull-type cylinder where air retracts the rod and an internal spring extends it back out. It provides 717.7 N of net pull at 0.5 MPa and 1047.5 N at 0.7 MPa. This makes it well suited for tensioning or pulling heavy loads back to an open rest state.
Because the spring performs the extension work, you only need one air line connected to its PT1/4 port. The short riveted body saves axial mounting depth compared to standard round-body options. A fixed NBR bumper decelerates the stroke end, and the built-in magnet allows position detection with a reed or electronic switch.
Airtac STA Single Acting Compact Guided Cylinder STA50X15S Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA50X15S |
|---|---|
| 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 STA50X15S
| 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 STA50X15S Is Used
Gate Retraction
Uses the 717.7 N net pull to draw a heavy diverter gate closed against product flow, letting the spring push it open when air stops.
Pallet Hold-Down
Pulls a tension clamp tight over pallet loads during stretch wrapping, safely releasing the hold when the system exhausts air.
Lift Arm Return
Tugs a vertical sorting arm down to its home position, relying on the internal spring to raise the arm back up for the next cycle.
Is the Airtac STA Single Acting Compact Guided Cylinder STA50X15S the Right Cylinder?
When sizing this 50 mm bore model, consider the STA40 which yields 445.1 N net pull at 0.5 MPa, or the larger STA63 providing 1225.5 N at 0.5 MPa. This STA50X15S offers a safe working load of roughly 431 N, which translates to a vertical lift capacity of about 36.6 kg with a 2:1 safety margin.
Remember the 30 mm maximum standard stroke ceiling and that the spring drives the rod out upon air loss, meaning it cannot hold a mid-stroke load without an external lock. This specific configuration includes the S magnet option for sensing and a female M10x1.5 rod-end thread on its 20 mm rod. Operating pressure must be 0.2-1.0 MPa to overcome the spring.
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 STA50X15S FAQ
This cylinder delivers 717.7 N net pull 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.
Air pressure retracts the 20 mm rod while the internal spring extends it to rest. The included S magnet enables position feedback using either a reed or electronic switch. The fixed NBR bumper handles end-stop deceleration.
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