Airtac SAI40 Standard Air Cylinder SAI40X25S
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X25S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 25mm 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
- Stroke25 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 SAI40X25S
The AirTAC SAI40X25-S is a double-acting ISO 15552 profile cylinder engineered for compact actuation. Delivering 628N push force at 0.5 MPa, this 40mm bore unit is tailored for short 25mm strokes. Its extruded aluminum barrel design omits tie-rods, yielding a clean exterior that simplifies mounting and sensor placement.
This variant includes a built-in magnet for non-contact position detection, seamlessly supporting CMSE and DMSE series switches within its dual-side sensor grooves. Standard carbon steel piston rod material ensures robust performance for general industrial pneumatics, while the PT tapered port thread guarantees a reliable, leak-free connection.
Airtac SAI40 Standard Air Cylinder SAI40X25S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X25S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 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 SAI40X25S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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 SAI40X25S Is Used
Short-Stroke Clamping
Ideal for holding lightweight workpieces during machining or assembly, utilizing the 628N push force efficiently within a tight 25mm travel limit.
Package Ejection
Provides rapid, repetitive ejection of components or packaging materials from conveyor lines where a brief 25mm actuation distance is required.
Valve Actuation
Suitable for automating mechanical valves or gates, leveraging the integrated magnet and CMSE sensors to confirm exact open and closed positions.
Is the Airtac SAI40 Standard Air Cylinder SAI40X25S the Right Cylinder?
Select this 40mm bore when a 32mm bore (402N at 0.5 MPa) lacks thrust, but a 50mm bore (982N at 0.5 MPa) is physically oversized. The 25mm stroke is optimal for high-cycle clamping or ejecting tasks where absolute end-positioning speed is critical. Because the stroke is short, side-load stress on the rod bearing is minimal, negating the need for external guide rails.
As a true ISO 15552 profile cylinder, it serves as a drop-in replacement for any standard ISO 15552 unit with matching 40mm bore, 25mm stroke, G1/4 port, and LB or FA mounting accessories. If your machinery requires the piston to maintain its position during a complete loss of air pressure, note that the standard adjustable air cushions only decelerate the stroke end; you must specify an external pilot-operated check valve or select the SAIL locking variant instead.
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 SAI40X25S FAQ
At 0.5 MPa operating pressure, the SAI40X25-S cylinder provides a push force of 628N and a pull force of 528N. At 0.7 MPa, the push force increases to 879N.
Yes, the SAI40X25-S is dimensionally interchangeable per ISO 15552. It matches the mounting interface, 40mm bore, 25mm stroke, and G1/4 port of other ISO 15552 profile cylinders, allowing seamless drop-in replacement.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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