Airtac SAI40 Standard Air Cylinder SAI40AX275S
The AirTAC SAI40 Standard Air Cylinder SAI40AX275S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 275mm 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
- Stroke275 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 SAI40AX275S
The AirTAC SAI40X275-S is a double-acting ISO 15552 profile cylinder engineered to deliver 628 N of push force at 0.5 MPa, scaling up to 879 N at 0.7 MPa. Its 275 mm stroke provides the extended travel needed for mid-range automation tasks while maintaining a standardized mounting interface for direct compatibility.
This specific configuration features an SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. It includes a built-in magnet (-S) for position sensing via CMSE or DMSE switches, which seat neatly into the dual sensor grooves machined into both sides of the extruded aluminum barrel. Fluid ports utilize a PT tapered thread standard.
Airtac SAI40 Standard Air Cylinder SAI40AX275S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX275S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 275 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 SAI40AX275S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×275 | 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 SAI40AX275S Is Used
Component Ejection
Provides reliable push force to eject machined parts from a fixture, utilizing the 275 mm stroke to clear the work area completely.
Package Diverting
Actuates a diverter arm on a packaging line, where the 879 N output at 0.7 MPa easily redirects moderate-weight cartons.
Pallet Stopping
Deploys a stop gate to halt pallets at a specific workstation, relying on the SUS420J2 rod to withstand humid warehouse environments.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX275S the Right Cylinder?
Selecting this 40 mm bore is ideal when a 32 mm bore (offering 402 N push at 0.5 MPa) lacks the necessary thrust, but a 50 mm bore (982 N push) would be physically oversized and consume more air. The 275 mm stroke falls within the standard maximum of 1200 mm for this bore, making it readily achievable without custom manufacturing.
Because the stroke exceeds 300 mm, the unsupported rod length increases susceptibility to bending under side loads. Implement an external guide rail or a guided cylinder carriage to prevent rod-bearing wear and premature seal failure. Note that the adjustable air cushions only decelerate the piston at stroke ends; they do not lock the load. If your application requires static holding without continuous air pressure, integrate an external pilot-operated check valve or select the SAIL variant. This model directly matches ISO 15552 footprint dimensions, requiring a 40 mm bore, 275 mm stroke, G1/4 port, and your chosen mounting accessory (such as an LB foot or FA flange) along with the -S magnet.
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 SAI40AX275S FAQ
This 40 mm bore cylinder generates 628 N of push force and 528 N of pull force at 0.5 MPa. When operating at 0.7 MPa, the push force increases to 879 N.
Yes, the SAI40X275-S is dimensionally interchangeable per ISO 15552. You can use it as a direct replacement for other ISO 15552 profile cylinders with a 40 mm bore and 275 mm stroke, provided your port and mounting dimensions align.
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