Airtac STA Single Acting Compact Guided Cylinder STA25X15B
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA25X15B is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø25mm 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.
- BoreØ25 mm
- Stroke15 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 STA25X15B
The AirTAC STA25X15B is a compact single-acting pull-type cylinder where air retracts the rod and an internal spring pushes it back out. It provides 177.7 N of net pull at 0.5 MPa, making it suitable for tensioning and return-to-open tasks. The short riveted body saves axial mounting depth where standard round-body or profile cylinders will not fit.
This specific SKU features a male M8x1.25 piston rod thread and a 10 mm rod diameter. It operates at 50-500 mm/s and uses a fixed NBR bumper to decelerate the stroke end rather than an adjustable cushion. Because it lacks the -S option, it has no piston magnet and cannot accept AirTAC reed or electronic switches.
Airtac STA Single Acting Compact Guided Cylinder STA25X15B Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA25X15B |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø25 mm |
| Stroke | 15 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 STA25X15B
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 25 | 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 STA25X15B Is Used
Gate Retraction
Uses the 177.7 N net pull to draw a diverter gate closed on a conveyor line, with the internal spring automatically opening it when air pressure drops.
Film Tensioning
Maintains steady tension on packaging film webs by pulling the dancer roll back against the material flow during the wrapping cycle.
Hold-Down Release
Pulls a small clamping pin out of the way to release a held-down workpiece, relying on the spring to re-engage the pin for the next part.
Is the Airtac STA Single Acting Compact Guided Cylinder STA25X15B the Right Cylinder?
When sizing this model, consider the neighboring bores: the STA20 yields 108.9 N while the STA32 provides 290.1 N, both at 0.5 MPa. For this STA25X15B, a safe working load is roughly 107 N (about 60% of the 177.7 N figure), allowing a vertical lift of approximately 9.1 kg with a 2:1 margin.
Confirm the 25 mm bore, 15 mm stroke, and M5x0.8 air port suit your pneumatic setup. Remember the 30 mm maximum standard stroke ceiling. Since the spring drives the rod out upon air loss, this cylinder does not hold a mid-stroke load; use a double-acting SDA with an external rod lock if position holding is required.
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 STA25X15B FAQ
This cylinder delivers 177.7 N of net pull at 0.5 MPa and 260.1 N at 0.7 MPa. These figures already account for the internal return spring, so you can size directly to these values.
No, this specific SKU lacks the -S magnet option and cannot accept sensing switches. Adding the -S variant would enable the use of AirTAC reed or electronic switches in the body grooves.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC STA Cylinders
Request a Quote for Airtac STA Single Acting Compact Guided Cylinder STA25X15B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.