Airtac SAI40 Standard Air Cylinder SAI40X15
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X15 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 15mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke15 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAI40 Standard Air Cylinder SAI40X15
The AirTAC SAI40X15 is a double-acting ISO 15552 profile cylinder engineered for ultra-short stroke actuation. Delivering a push force of 628 N at 0.5 MPa, this 40 mm bore unit handles compact positioning tasks that standard lengths cannot fit. The extruded aluminum barrel design omits tie-rods, providing a clean exterior that drops directly into existing ISO 15552 mounting interfaces.
Because this 15 mm stroke is a non-standard made-to-order length, it is purpose-built for tight machinery clearances. The piston rod utilizes standard carbon steel for high tensile strength, and the barrel features dual sensor grooves allowing CMSE or DMSE switches to be mounted on either side if a magnet is specified later. It operates efficiently at speeds between 30 and 800 mm/s.
Airtac SAI40 Standard Air Cylinder SAI40X15 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X15 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAI40 Standard Air Cylinder SAI40X15
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×15 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAI40 Standard Air Cylinder SAI40X15 Is Used
Short-Stroke Clamping
Ideal for securing small workpieces in CNC fixtures where a 15 mm extension is sufficient to lock the part without obstructing the cutting tool.
Gate Diverting
Provides rapid, short-throw actuation to deflect packages on a conveyor line, fitting into tight transfer stations between belts.
Ejector Mechanisms
Delivers a quick 628 N punch to eject finished parts from tight press dies where standard stroke lengths would bottom out.
Is the Airtac SAI40 Standard Air Cylinder SAI40X15 the Right Cylinder?
Select this specific 15 mm stroke when a standard 25 mm stroke would overtravel and crash the end tooling. If your application requires slightly less force in an even tighter footprint, stepping down to a 32 mm bore yields 402 N at 0.5 MPa. Conversely, if your load requires more push strength, stepping up to a 50 mm bore provides 982 N at 0.5 MPa.
This cylinder uses a PT tapered port thread and G1/4 air connections. Being a non-standard stroke, ensure your CAD layout accounts for the custom dimensions. If the machinery loses air pressure, this standard SAI cylinder cannot hold its load in place; for position-holding requirements without live pressure, specify the SAIL variant with an air-released lock or utilize an external pilot-operated check valve.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAI40 Standard Air Cylinder SAI40X15 FAQ
At an operating pressure of 0.5 MPa, the SAI40X15 generates a push force of 628 N and a pull force of 528 N. At 0.7 MPa, the push force increases to 879 N.
Yes, the SAI40X15 is dimensionally interchangeable per ISO 15552. You can drop it into existing mounting hardware like FA flanges or LB foot brackets, though you must verify the 15 mm custom stroke length fits your application.
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