Airtac SAI40 Standard Air Cylinder SAI40AX155S
The AirTAC SAI40 Standard Air Cylinder SAI40AX155S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 155mm 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
- Stroke155 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 SAI40AX155S
The AirTAC SAI40X155-S is a double-acting ISO 15552 profile cylinder engineered to deliver 628 N of push force at 0.5 MPa. Its 155 mm stroke provides the exact mid-range travel needed for compact assembly machinery. Built with a tie-rod-less extruded aluminum barrel, it offers a clean profile while maintaining strict dimensional interchangeability with other ISO 15552 standard cylinders.
This specific configuration includes a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance over standard carbon steel. Equipped with a built-in magnet (-S), it directly supports CMSE and DMSE sensor switches via the dual side grooves on the barrel. The standard TPU seals accommodate operating temperatures from -20 to +70 C, while adjustable air cushions at both ends protect your end-of-stroke components.
Airtac SAI40 Standard Air Cylinder SAI40AX155S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX155S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 155 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 SAI40AX155S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×155 | 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 SAI40AX155S Is Used
Compact Assembly Presses
Provides reliable 628 N clamping force for pressing small bearings or pins into housings without requiring a full hydraulic system.
Package Diverters
The 155 mm stroke actuates diverter arms smoothly on packaging lines, utilizing the adjustable cushions to prevent harsh impacts at stroke end.
Sensor-Driven Gating
Leveraging the built-in magnet and dual sensor grooves, this cylinder operates high-speed sorting gates with precise position feedback via DMSE switches.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX155S the Right Cylinder?
Select this 40 mm bore when an application requires stepping up from the 32 mm class (which provides 402 N at 0.5 MPa) to handle heavier actuation, but you want to avoid the larger footprint of a 50 mm cylinder (982 N). The 155 mm stroke is a non-standard increment, so verify your dead-space requirements if replacing an existing unit. Because this is a double-acting cylinder, air pressure is required to move the rod in both directions.
For a direct replacement, match the 40 mm bore, 155 mm stroke, PT threaded G1/4 port, and your required mounting accessory (such as LB foot or FA flange). Note that standard air cushions only decelerate the piston near stroke end; they do not hold a load. If your fixture drops when air pressure is lost, specify the SAIL variant with an air-released lock or use 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 SAI40AX155S FAQ
At a 0.5 MPa operating pressure, this 40 mm bore cylinder generates 628 N of push force and 528 N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 879 N.
Yes. The SAI40X155-S is dimensionally interchangeable per ISO 15552. You can drop it into existing setups matching the 40 mm bore, 155 mm stroke, and G1/4 port, provided your mounting hardware matches standard accessories.
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