Airtac STA Single Acting Compact Guided Cylinder STA40X5B
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA40X5B is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø40mm 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.
- BoreØ40 mm
- Stroke5 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 STA40X5B
The AirTAC STA40X5B is a compact single-acting pull-type cylinder where compressed air retracts the rod and an internal spring pushes it back out. It yields 445.1 N of net pull at 0.5 MPa, safely handling a working load of roughly 267 N or lifting about 22.7 kg vertically with a 2:1 margin. The short riveted body drastically reduces axial mounting depth where a longer round-body unit will not fit.
This specific SKU features a male M14x1.5 piston rod thread and a 5 mm stroke. Because it lacks the -S option, there is no piston magnet and it cannot accept reed or electronic switches. A fixed NBR bumper decelerates the stroke end rather than an adjustable air cushion.
Airtac STA Single Acting Compact Guided Cylinder STA40X5B Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA40X5B |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 5 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 STA40X5B
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 40 | 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 STA40X5B Is Used
Tension Pull-Back
Uses the 445.1 N net pull to draw a belt or linkage tight, relying on the spring to slacken it when air is removed.
Clamp Release
Air retracts the male M14x1.5 rod to open a holding fixture, letting the spring snap it shut for secure fail-safe gripping.
Gate Return
Pulls a diverter gate closed in tight conveyor frames, taking advantage of the short 5 mm stroke and compact body depth.
Is the Airtac STA Single Acting Compact Guided Cylinder STA40X5B the Right Cylinder?
When sizing this 40 mm bore, stepping down to the STA32 yields 290.1 N net pull at 0.5 MPa, while stepping up to the STA50 provides 717.7 N. Operating pressure must be 0.2-1.0 MPa, needing at least 0.2 MPa simply to overcome the internal return spring.
Keep in mind the 30 mm maximum stroke ceiling for the series. Because the spring drives the rod to its extended rest position on air loss, this cylinder will not hold a mid-stroke load without an external locking device. Confirm your bore, 5 mm stroke, PT1/8 port, male M14x1.5 rod thread, and lack of magnet for this configuration.
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 STA40X5B FAQ
This cylinder provides 445.1 N of net pull at 0.5 MPa and 656.2 N at 0.7 MPa. It requires an operating pressure of 0.2-1.0 MPa, as a minimum of 0.2 MPa is needed to overcome the return spring.
No, this specific SKU does not have the -S option, meaning it lacks a piston magnet and cannot accept reed or electronic switches. You would need the -S variant to utilize the body sensor grooves.
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