Airtac SAI40 Standard Air Cylinder SAI40BX240S
The AirTAC SAI40 Standard Air Cylinder SAI40BX240S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 240mm 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
- Stroke240 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 SAI40BX240S
The AirTAC SAI40X240-S is a double-acting ISO 15552 profile cylinder featuring a 40mm bore and 240mm stroke. It delivers a robust 628N push force at 0.5 MPa, making it well-suited for mid-range industrial handling tasks. The extruded aluminum barrel design omits tie rods, providing a clean exterior that simplifies mounting and maintenance.
This specific configuration includes a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in humid or washdown environments. It also features a built-in magnet (-S) enabling seamless integration with CMSE or DMSE reed switches via the dual sensor grooves on the barrel. Ports are PT (tapered) thread type, ensuring a reliable pneumatic connection.
Airtac SAI40 Standard Air Cylinder SAI40BX240S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX240S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 240 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 SAI40BX240S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×240 | 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 SAI40BX240S Is Used
Material Handling
Ideal for pushing or diverting packages on a conveyor line where 628N of force is sufficient to manipulate medium-weight goods reliably.
Machine Guarding
Actuates safety doors and machine guards, utilizing the SUS304 rod to withstand occasional washdowns or exposure to machine coolants.
Pallet Positioning
Stops or positions empty pallets in a high-speed distribution hub, using the integrated magnet for precise end-of-stroke position sensing.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX240S the Right Cylinder?
Selecting this 40mm bore over the smaller 32mm (402N push at 0.5 MPa) provides a significant force upgrade, while stepping up to the 50mm bore (982N push) is advised if your application approaches the 800N mark. Because this model has a 240mm stroke, the extended rod is susceptible to bending under side loads. Utilizing an external guide rail or a fully guided cylinder is recommended to prevent premature rod-bearing wear.
As a dimensionally interchangeable ISO 15552 profile cylinder, it serves as a direct replacement for other standard cylinders sharing the same 40mm bore, 240mm stroke, and PT port interface. Note that the adjustable air cushions only decelerate the piston at stroke ends; they do not hold a load. If static holding is required without live air pressure, consider the SAIL (air-released lock) or BSAI (clamp-lock) variants.
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 SAI40BX240S FAQ
At an operating pressure of 0.5 MPa, this 40mm bore cylinder generates a push force of 628N and a pull force of 528N. At 0.7 MPa, the push force increases to 879N.
No, the standard SAI40X240-S is a double-acting cylinder and will drift if air pressure is lost. The adjustable air cushions only slow the piston at the end of the stroke. For load-holding applications, use the SAIL or BSAI variants.
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1-Year Warranty
Covers non-human-caused product damage.
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