Airtac SAI40 Standard Air Cylinder SAI40AX280
The AirTAC SAI40 Standard Air Cylinder SAI40AX280 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 280mm 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
- Stroke280 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 SAI40AX280
The AirTAC SAI40X280 is a double-acting ISO 15552 profile cylinder engineered to deliver 628N of push force at 0.5 MPa and 879N at 0.7 MPa. Its 280mm stroke provides the extended travel needed for mid-distance positioning tasks.
This configuration features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. It uses PT tapered port threads, and because it lacks the -S magnet option, it operates without integrated sensor grooves being utilized for position detection.
Airtac SAI40 Standard Air Cylinder SAI40AX280 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX280 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 280 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 SAI40AX280
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×280 | 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 SAI40AX280 Is Used
Component Ejection
Pushes machined parts out of a CNC fixture with 879N of force at 0.7 MPa over a 280mm reach.
Package Diverting
Actuates a routing arm to redirect medium-weight boxes along a packaging line.
Gate Operation
Opens and closes access doors on automated machinery requiring a 280mm stroke.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX280 the Right Cylinder?
Select this 40mm bore when a 32mm cylinder (providing 563N at 0.7 MPa) lacks the necessary thrust, but a 50mm bore (1374N at 0.7 MPa) would be physically oversized. At 280mm of stroke, the unsupported rod length is significant; side loads can cause premature rod-bearing wear or bending. Employ an external guide rail or a guided cylinder to absorb lateral forces.
For direct compatibility, match the 40mm bore, 280mm stroke, G1/4 PT port, and required mounting accessory like an FA flange or TC trunnion. Note that standard air cushions only decelerate the piston at end-of-stroke and will not hold a load vertically if air pressure is lost.
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 SAI40AX280 FAQ
At an operating pressure of 0.7 MPa, this double-acting 40mm bore cylinder provides 879N of push force and 528N of pull force. At 0.5 MPa, the push force is 628N.
Yes. The SAI40X280 is a true ISO 15552 profile cylinder, making its mounting dimensions interchangeable with other ISO 15552 cylinders. Match the G1/4 port and your specific mounting accessory for a seamless direct fit.
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