Airtac SAI40 Standard Air Cylinder SAI40X155S
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X155S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- 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 SAI40X155S
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 extension needed for compact ejectors and automated gating tasks. Because it uses an extruded aluminum barrel, it skips traditional tie-rods for a cleaner exterior.
This specific configuration includes a magnetic piston (-S) for direct compatibility with CMSE and DMSE series reed switches, dropping neatly into the dual sensor grooves machined on both sides of the barrel. It is built with a standard carbon steel piston rod and utilizes PT tapered port threading for your pneumatic connections.
Airtac SAI40 Standard Air Cylinder SAI40X155S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X155S |
|---|---|
| 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 SAI40X155S
| 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 SAI40X155S Is Used
Package Diverting
Provides the 155 mm extension needed to push cartons off a sorting line with 879 N of force at 0.7 MPa.
Compact Ejection
Cycles rapidly at 30-800 mm/s to eject molded parts from a press without consuming excessive footprint.
Gate Actuation
Handles the precise opening and closing of automated machine guarding or material flow gates.
Is the Airtac SAI40 Standard Air Cylinder SAI40X155S the Right Cylinder?
If your assembly requires slightly less thrust, the 32 mm bore variant offers 402 N at 0.5 MPa, whereas stepping up to a 50 mm bore increases that output to 982 N. For this 155 mm stroke, side loading is minimal, but always ensure the load is axially aligned to prevent premature rod-bearing wear. Should your mechanism lose air pressure, note that the standard adjustable air cushions only decelerate the piston at stroke ends and will not lock the load; utilize the SAIL variant if static holding is required. Being dimensionally interchangeable per ISO 15552, this 40 mm bore cylinder with a G1/4 port and PT threads can serve as a direct drop-in replacement for other ISO 15552 cylinders using standard FA or FB flange mounts.
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 SAI40X155S FAQ
At a standard operating pressure of 0.7 MPa, this 40 mm bore cylinder generates 879 N of push force and 736 N of pull force.
Yes, it is built to the ISO 15552 standard, meaning its mounting dimensions and G1/4 port size make it dimensionally interchangeable with other ISO 15552 profile cylinders.
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Covers non-human-caused product damage.
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