Airtac SAI40 Standard Air Cylinder SAI40X140
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X140 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 140mm 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
- Stroke140 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 SAI40X140
The AirTAC SAI40X140 is a double-acting ISO 15552 profile cylinder offering 628N push force at 0.5 MPa and 879N at 0.7 MPa. Its 140mm stroke is well-suited for medium-duty automation tasks requiring reliable linear motion. The extruded aluminum barrel eliminates tie-rods, providing a clean exterior while maintaining strict dimensional interchangeability per ISO 15552 standards.
This configuration features a standard carbon steel piston rod and PT (tapered) port threads. While the base model lacks a magnet, the barrel includes dual sensor grooves on both sides, allowing for easy addition of CMSE or DMSE position switches if detection is needed later. For higher temperature environments up to +70 C, Viton (H) seals can be specified instead of the standard TPU.
Airtac SAI40 Standard Air Cylinder SAI40X140 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X140 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 140 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 SAI40X140
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×140 | 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 SAI40X140 Is Used
Package Diverting
Provides the 879N push force at 0.7 MPa needed to actuate diverters on medium-speed packaging lines, utilizing the 140mm stroke to clear product paths.
Clamping Fixtures
Secures workpieces during machining operations, leveraging the carbon steel rod for rigidity and the ISO 15552 mounting interface for easy fixture integration.
Vertical Lift Stops
Acts as a reliable stop mechanism in automated storage and retrieval systems, where the 628N force at 0.5 MPa is sufficient to halt moving totes.
Is the Airtac SAI40 Standard Air Cylinder SAI40X140 the Right Cylinder?
Step up to the 50mm bore if you need greater thrust, as it provides 982N at 0.5 MPa compared to this 40mm bore's 628N. Conversely, step down to a 32mm bore for lighter loads requiring only 402N. The 140mm stroke is well within the 1200mm standard maximum, making it a straightforward choice for general automation. The PT G1/4 porting matches the bore size perfectly for optimal flow rates.
If your application requires the load to remain held when air pressure is removed or exhausted, a standard SAI cylinder will experience piston drift. In such cases, specify the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock. The adjustable air cushions at both ends are strictly for decelerating the piston near stroke ends, not for locking the load.
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 SAI40X140 FAQ
The SAI40X140 generates a push force of 628N at 0.5 MPa, 879N at 0.7 MPa, and 1130N at 0.9 MPa. The pull force is 528N at 0.5 MPa.
Yes, the SAI40X140 is dimensionally interchangeable per ISO 15552, meaning it serves as a drop-in replacement for other standard profile cylinders with matching 40mm bore and G1/4 PT port specifications.
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Standard models are processed and dispatched in 3-5 business days.
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