Airtac SAI40 Standard Air Cylinder SAI40X425S
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X425S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 425mm 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
- Stroke425 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 SAI40X425S
The AirTAC SAI40X425-S is a double-acting ISO 15552 profile cylinder featuring a 40mm bore and 425mm stroke. It generates 628N of push force at 0.5 MPa and 879N at 0.7 MPa, making it well-suited for mid-range automation tasks. The extruded aluminum barrel design integrates a magnet for direct compatibility with CMSE and DMSE sensor switches.
This model includes a standard carbon steel piston rod and utilizes a PT tapered port thread. The barrel incorporates sensor grooves on both sides, allowing for flexible switch mounting. Adjustable air cushions at both ends ensure smooth deceleration of the piston at the stroke extremes.
Airtac SAI40 Standard Air Cylinder SAI40X425S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X425S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 425 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 SAI40X425S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×425 | 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 SAI40X425S Is Used
Package Sorting
Pushes packages laterally on a conveyor belt using its 879N force at 0.7 MPa, with the 425mm stroke accommodating wide product widths.
Clamping Fixtures
Secures workpieces during machining operations, utilizing the integrated magnet and CMSE sensors to confirm clamp position.
Pallet Handling
Extends to position or stop pallets at staging areas, relying on the adjustable air cushions to cushion the load at stroke end.
Is the Airtac SAI40 Standard Air Cylinder SAI40X425S the Right Cylinder?
If your application requires less force, the 32mm bore offers 563N at 0.7 MPa; for heavier loads, the 50mm bore provides 1374N at 0.7 MPa. This 425mm stroke exceeds the 300mm threshold, meaning the extended rod is susceptible to bending under side loads. To prevent premature wear on the rod bearing, utilize an external guide rail system or employ a fully guided cylinder.
As a true ISO 15552 profile cylinder, this unit is dimensionally interchangeable with other ISO 15552 cylinders of the same bore and stroke. Replacement requires matching the 40mm bore, 425mm stroke, G1/4 port, and mounting accessories like FA or FB flanges. The -S suffix indicates the internal magnet is present for sensor switching. Note that standard double-acting cylinders will drift if air pressure is lost; use the SAIL or BSAI variants if the load must be held without live pressure.
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 SAI40X425S FAQ
The SAI40X425-S generates a push force of 628N at 0.5 MPa and 879N at 0.7 MPa. The pull force is 528N at 0.5 MPa.
Yes, the SAI40X425-S is dimensionally interchangeable with other ISO 15552 profile cylinders. Ensure you match the 40mm bore, 425mm stroke, G1/4 port, and mounting footprint.
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Covers non-human-caused product damage.
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