Airtac STA Single Acting Compact Guided Cylinder STA40X30B
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA40X30B is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø40mm 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.
- BoreØ40 mm
- Stroke30 mm
- Port sizePT1/8
- Acting typeSingle acting, pull type
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- CushionFixed NBR bumper
About the Airtac STA Single Acting Compact Guided Cylinder STA40X30B
The AirTAC STA40X30B is a compact single-acting pull-type cylinder where compressed air retracts the rod and an internal spring pushes it back out. It provides 445.1 N of net pull at 0.5 MPa, reaching 656.2 N at 0.7 MPa. This unit features a male-thread piston rod (M14x1.5) and a 30 mm stroke, maximizing the standard travel ceiling.
Its short riveted body saves axial mounting depth where a standard round-body cylinder will not fit. A fixed NBR bumper decelerates the stroke end, requiring only a single air line and one solenoid port for operation.
Airtac STA Single Acting Compact Guided Cylinder STA40X30B Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA40X30B |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 mm |
| Acting type | Single acting, pull type |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 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 (Ø40mm, Pull)
| Pressure | Pull force (net) |
|---|---|
| 0.5 MPa | 445 N |
| 0.7 MPa | 656 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 STA40X30B
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 40 | 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 STA40X30B Is Used
Tension Gate Closure
Uses the 445.1 N net pull to draw a conveyor diverter gate inward against spring resistance, releasing it to spring-extend when air stops.
Carton Hold-Down Release
Pulls a hold-down pin out of the way during carton filling, letting the internal spring push the rod back to secure the station at rest.
Vertical Lift Retract
Lifts a 22.7 kg vertical load with a 2:1 safety margin by pulling it upward on air, relying on the spring to lower the mass safely.
Is the Airtac STA Single Acting Compact Guided Cylinder STA40X30B the Right Cylinder?
When sizing this 40 mm bore, sizing both ways shows the STA32 yields 290.1 N at 0.5 MPa, while the larger STA50 provides 717.7 N at 0.5 MPa. A safe working load is roughly 267 N, allowing a vertical lift of about 22.7 kg with a 2:1 margin. Operating pressure must be 0.2-1.0 MPa to overcome the spring.
Because the spring drives the rod out upon air loss, this unit does not hold a mid-stroke load. Confirm the 40 mm bore, 30 mm stroke, PT1/8 port, and male M14x1.5 rod thread. This SKU lacks the -S magnet, so it cannot accept reed or electronic switches.
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 STA40X30B FAQ
The net pull force is 445.1 N at 0.5 MPa and 656.2 N at 0.7 MPa. Operating pressure is 0.2-1.0 MPa, needing at least 0.2 MPa to overcome the internal return spring.
No, this specific SKU lacks the -S magnet code, so it cannot accept reed or electronic switches. You must select the -S variant to enable sensor groove detection.
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