Airtac SAI40 Standard Air Cylinder SAI40BX270S
The AirTAC SAI40 Standard Air Cylinder SAI40BX270S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 270mm 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
- Stroke270 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 SAI40BX270S
The AirTAC SAI40X270-S is a double-acting ISO 15552 profile cylinder engineered for standardized mounting interchangeability. Delivering a push force of 879 N at 0.7 MPa, this 40 mm bore unit is built for robust linear motion tasks. The 270 mm stroke provides ample extension for mid-range positioning.
This specific configuration features a SUS304 stainless steel rod for superior corrosion resistance in humid or washdown environments. Equipped with a magnet (-S), it seamlessly integrates CMSE or DMSE sensor switches housed within the dual side grooves of the extruded aluminum barrel.
Airtac SAI40 Standard Air Cylinder SAI40BX270S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX270S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 270 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 SAI40BX270S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×270 | 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 SAI40BX270S Is Used
Component Clamping
Provides reliable 879 N clamping force at 0.7 MPa for securing machined parts during milling or drilling operations.
Package Diverting
Actuates diverting arms on packaging lines, utilizing the 270 mm stroke to push cartons smoothly between parallel belts.
Gate Operation
Controls access gates in automated work cells, benefiting from the SUS304 rod in environments requiring frequent washdowns.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX270S the Right Cylinder?
Choose this 40 mm bore when an application requires more thrust than the 32 mm variant (which provides 563 N at 0.7 MPa) but lacks the physical space for a 50 mm unit. Because the 270 mm stroke exceeds 300 mm is near the threshold where side loading becomes a concern, ensure external guides support the load to prevent rod-bearing bending. For applications needing position holding without live air pressure, select the SAIL or BSAI lock variants instead of relying on the adjustable air cushions. This model uses PT tapered ports and pairs with FA, LB, or TC mounting accessories.
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 SAI40BX270S FAQ
At an operating pressure of 0.7 MPa, this double-acting cylinder generates 879 N of push force and 724 N of pull force.
Yes, the SAI40X270-S is dimensionally interchangeable per ISO 15552. You can drop it in as a replacement for other ISO 15552 profile cylinders with matching 40 mm bore and 270 mm stroke specifications.
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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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Most inquiries answered within 7-8 hours.
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