Airtac SAI40 Standard Air Cylinder SAI40AX425
The AirTAC SAI40 Standard Air Cylinder SAI40AX425 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- 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 SAI40AX425
The AirTAC SAI40X425 is a double-acting ISO 15552 profile cylinder engineered to deliver 628N of push force at 0.5 MPa. Its 425mm stroke is ideal for intermediate linear travel in automated machinery. The extruded aluminum barrel omits tie rods, presenting a clean exterior that simplifies mounting and sensor placement.
This specific unit is built with an SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance in demanding environments. It features tapered PT threads on the G1/4 port. Because no magnet is specified, it relies on external physical switches rather than internal reed sensors.
Airtac SAI40 Standard Air Cylinder SAI40AX425 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX425 |
|---|---|
| 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 SAI40AX425
| 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 SAI40AX425 Is Used
Package Diverting
Extends 425mm to push cartons off a main conveyor line at 628N force, using adjustable cushions to decelerate smoothly without slamming.
Parts Ejection
Ejects molded or machined components from a fixture, where the SUS420J2 rod material withstands minor moisture and shop debris.
Pallet Push-Off
Pushes lightweight empty pallets or dunnage into a staging area, benefiting from the PT-threaded G1/4 port for robust pneumatic connections.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX425 the Right Cylinder?
Choose this 40mm bore when a 32mm bore (providing 402N push at 0.5 MPa) lacks the necessary thrust, but a 50mm bore (982N) would be physically oversized. The 425mm stroke provides ample extension for part ejection or material handling. For applications requiring position holding without constant air pressure, select the SAIL lock variant or an external BSAI clamp-lock cylinder, as the standard SAI does not hold loads when pressure drops.
Because the 425mm stroke exceeds 300mm, the extended rod is highly susceptible to bending under side loads. To prevent premature rod-bearing wear, pair this cylinder with an external linear guide or specify a fully guided cylinder to manage lateral forces. This model is dimensionally interchangeable per ISO 15552, offering a direct replacement for other ISO 15552 profile cylinders with identical 40mm bore, 425mm stroke, PT ports, and standard mounting accessories.
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 SAI40AX425 FAQ
At 0.5 MPa operating pressure, the SAI40X425 generates 628N of push force and 528N of pull force. At 0.7 MPa, the push force increases to 879N.
Yes, the SAI40X425 is a true ISO 15552 profile cylinder, making its mounting interface dimensionally interchangeable with other ISO 15552 cylinders. You can drop it in using your existing 40mm bore mounting accessories.
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