Airtac SAI40 Standard Air Cylinder SAI40AX275
The AirTAC SAI40 Standard Air Cylinder SAI40AX275 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 SAI40AX275
The AirTAC SAI40X275 is a double-acting ISO 15552 profile cylinder engineered to deliver 879 N of push force at 0.7 MPa. Its 275 mm stroke provides the extended travel needed for mid-range positioning tasks. As a tie-rod-less extruded aluminum barrel design, it offers a clean profile while maintaining strict dimensional interchangeability with other ISO 15552 standard cylinders.
This specific configuration features a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. It utilizes PT tapered port threads, and because it lacks the -S magnet option, it operates without integrated sensor grooves for position detection.
Airtac SAI40 Standard Air Cylinder SAI40AX275 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX275 |
|---|---|
| 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 SAI40AX275
| 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 SAI40AX275 Is Used
Package Routing
Diverts medium-weight cartons on a packaging line using the 879 N push force and 275 mm travel to actuate routing arms.
Clamp Actuation
Extends to secure workpieces in light machining fixtures, utilizing the SUS420J2 stainless rod to resist shop-floor moisture.
Pallet Stops
Functions as an extendable stop gate on roller conveyors, providing reliable physical resistance to halt incoming pallets.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX275 the Right Cylinder?
Select this 40 mm bore when an application requires more power than a 32 mm bore (which provides 563 N at 0.7 MPa) but has spatial constraints that prevent stepping up to a 50 mm bore (1374 N at 0.7 MPa). The 275 mm stroke offers ample extension for packaging and material handling. Because the stroke exceeds 300 mm is approached, designers must evaluate side-load conditions; long unsupported rods are susceptible to bending, so utilizing an external guide rail or a guided cylinder module is strongly recommended to prevent premature rod-bearing wear.
For direct ISO 15552 replacements, verify the 40 mm bore, 275 mm stroke, G1/4 port size, and mounting accessory type (such as FA flange or LB foot). Remember that a standard double-acting cylinder relies on continuous air pressure to move; if pressure is lost, the piston will drift. To hold a load securely without live pressure, specify the SAIL variant with an air-released lock or the BSAI clamp-lock version.
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 SAI40AX275 FAQ
At a standard operating pressure of 0.7 MPa, this 40 mm bore cylinder generates 879 N of push force and 528 N of pull force.
No, the standard SAI cylinder does not hold position without air pressure and will drift. To maintain a vertical load during pressure loss, use the SAIL variant with an air-released lock or an external rod lock.
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