Airtac SAI40 Standard Air Cylinder SAI40X25
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X25 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 SAI40X25
The AirTAC SAI40X25 is a double-acting ISO 15552 profile cylinder featuring a 40mm bore and a 25mm stroke. It provides a thrust of 628 N at 0.5 MPa, making it well-suited for short-stroke clamping and ejection tasks. The extruded aluminum barrel design omits tie rods, presenting a clean exterior that simplifies sensor placement.
This specific configuration utilizes a standard carbon steel piston rod and PT tapered port threading. Because it lacks a built-in magnet, position detection requires external switches mounted to the cylinder body rather than internal reed sensors.
Airtac SAI40 Standard Air Cylinder SAI40X25 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X25 |
|---|---|
| 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 SAI40X25
| 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 SAI40X25 Is Used
Short-Stroke Clamping
Ideal for securing workpieces during machining operations where a brief, powerful 628N clamping motion is required.
Product Ejection
Provides rapid, compact ejection of parts from conveyor lines using its 25mm stroke and 30-800 mm/s speed range.
Packaging Stops
Acts as a high-speed positioning stop in packaging machinery, handling lightweight materials with precise 25mm movements.
Is the Airtac SAI40 Standard Air Cylinder SAI40X25 the Right Cylinder?
Selecting this 40mm bore is appropriate when the neighboring 32mm option (402 N push at 0.5 MPa) lacks sufficient power, but the 50mm bore (982 N at 0.5 MPa) would be excessive. The 25mm stroke is highly compact, minimizing overall machine footprint.
As a true ISO 15552 profile cylinder, it serves as a drop-in replacement for other ISO 15552 cylinders such as Festo or SMC, matching standard mounting dimensions. Remember that the adjustable air cushions only decelerate the piston near the end caps; they do not lock the rod. If your setup must hold a load without continuous air pressure, consider the SAIL locking variant or 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 SAI40X25 FAQ
At an operating pressure of 0.5 MPa, the SAI40X25 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 SAI40X25 is a genuine ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 standard cylinders from manufacturers like SMC or Festo.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
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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