Airtac STA Single Acting Compact Guided Cylinder STA25X5SB
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA25X5SB is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø25mm 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.
- BoreØ25 mm
- Stroke5 mm
- Port sizeM5×0.8
- Acting typeSingle acting, pull type
- Rod threadM5×0.8 (F) / M8×1.25 (B)
- CushionFixed NBR bumper
About the Airtac STA Single Acting Compact Guided Cylinder STA25X5SB
The AirTAC STA25X5SB is a compact single-acting pull-type cylinder where air retracts the rod and an internal spring extends it out at rest. It yields 177.7 N of net pull at 0.5 MPa, making it suitable for short tensioning and hold-down duties. The short riveted body saves axial mounting depth where a standard round-body cylinder will not fit.
This specific configuration includes a built-in piston magnet for position sensing and a male M8x1.25 threaded rod end. A fixed NBR bumper decelerates the stroke end, and the unit requires only a single M5x0.8 air line to operate.
Airtac STA Single Acting Compact Guided Cylinder STA25X5SB Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA25X5SB |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø25 mm |
| Stroke | 5 mm |
| Acting type | Single acting, pull type |
| Port size | M5×0.8 |
| Rod end thread | M5×0.8 female / M8×1.25 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 (Ø25mm, Pull)
| Pressure | Pull force (net) |
|---|---|
| 0.5 MPa | 178 N |
| 0.7 MPa | 260 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 STA25X5SB
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 25 | 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 STA25X5SB Is Used
Gate Return Tensioning
Uses the 177.7 N net pull to hold a light sliding gate closed against a stop, with the spring automatically opening it when air pressure is released.
Clamp Hold-Down
Pulls a small workpiece down onto a fixture during machining, relying on the male M8x1.25 rod for a secure external attachment.
Carton Flap Puller
Draws packaging flaps inward on a compact conveyor line where the short 5 mm stroke and space-saving riveted body provide precise clearance.
Is the Airtac STA Single Acting Compact Guided Cylinder STA25X5SB the Right Cylinder?
When sizing this 25 mm bore, note that stepping down to the STA20 yields 108.9 N net pull at 0.5 MPa, while stepping up to the STA32 provides 290.1 N. The 5 mm stroke is well within the 30 mm maximum ceiling for this series. Because the spring drives the rod to its extended rest position on air loss, this cylinder does not hold a mid-stroke load without live pressure.
This model is configured with the -S magnet for AirTAC reed or electronic switches and the -B male M8x1.25 rod thread. It operates on a single M5x0.8 port and requires at least 0.2 MPa to overcome the internal 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 STA25X5SB FAQ
The net pull force is 177.7 N at 0.5 MPa and 260.1 N at 0.7 MPa. These figures already account for the internal spring resistance. The operating pressure range is 0.2-1.0 MPa, with a minimum of 0.2 MPa required to overcome the spring.
Air pressure retracts the rod, while the internal spring extends it to the rest position. The -S code indicates a built-in piston magnet compatible with AirTAC reed or electronic solid-state switches for position detection.
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