Airtac SAI40 Standard Air Cylinder SAI40BX250S
The AirTAC SAI40 Standard Air Cylinder SAI40BX250S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 250mm 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
- Stroke250 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 SAI40BX250S
The AirTAC SAI40X250-S is a double-acting ISO 15552 profile cylinder engineered to deliver 628 N of push force and 528 N of pull force at 0.5 MPa. Its 250 mm stroke provides the extended travel needed for mid-range material handling and packaging tasks. As a genuine AirTAC component, it ensures reliable pneumatic performance.
This specific configuration includes a SUS304 stainless steel rod for superior corrosion resistance in humid or washdown environments. The built-in magnet (-S) allows seamless integration with CMSE or DMSE sensor switches, which seat directly into the dual grooves machined into the extruded aluminum barrel.
Airtac SAI40 Standard Air Cylinder SAI40BX250S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX250S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 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 SAI40BX250S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×250 | 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 SAI40BX250S Is Used
Packaging Equipment
Drives extended sealing and folding arms on automated packaging lines, utilizing the 250 mm stroke to reach across wider conveyor belts.
Product Diversion
Actuates diverter gates to sort medium-weight goods along material handling routes with reliable 628 N thrust.
Assembly Presses
Performs light-duty pressing and component seating in electronic and small appliance assembly fixtures.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX250S the Right Cylinder?
If your application requires slightly less extension or force, stepping down to the 32 mm bore yields 402 N at 0.5 MPa. Conversely, demanding jobs can step up to the 50 mm bore for 982 N. Because this 250 mm stroke exceeds the 300 mm threshold, it is vital to manage side loads using an external guide rail or a dedicated guided cylinder to prevent rod-bearing bending.
As a true ISO 15552 profile cylinder, this unit is dimensionally interchangeable with other standard ISO 15552 cylinders. To match this exact model, select a 40 mm bore, 250 mm stroke, PT tapered port thread, and specify the -S magnet option along with your required mounting accessories like an FA flange or TC trunnion.
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 SAI40BX250S FAQ
At 0.5 MPa operating pressure, the SAI40X250-S generates 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
Yes, the SAI40X250-S features a standard ISO 15552 mounting interface, making it a direct replacement for other ISO 15552 profile cylinders of the same bore and stroke. Always confirm your port and mounting dimensions.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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