Airtac SAI40 Standard Air Cylinder SAI40BX275S
The AirTAC SAI40 Standard Air Cylinder SAI40BX275S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 275mm 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
- Stroke275 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 SAI40BX275S
The AirTAC SAI40X275-S is a double-acting ISO 15552 profile cylinder featuring a 40 mm bore and a 275 mm stroke. It generates 628 N of push force and 528 N of pull force at 0.5 MPa, making it well-suited for mid-range automation tasks. The extruded aluminum barrel design omits tie rods, providing a clean exterior while maintaining strict dimensional interchangeability with other ISO 15552 standard cylinders.
This specific configuration includes a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in harsh environments. It is equipped with a magnet (-S) for seamless integration with CMSE and DMSE series reed switches via the dual sensor grooves molded into the barrel profile. Fluid ports are PT tapered threads sized at G1/4.
Airtac SAI40 Standard Air Cylinder SAI40BX275S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX275S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 275 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 SAI40BX275S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×275 | 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 SAI40BX275S Is Used
Package Diverting
Ideal for actuating diverter arms on packaging lines where the 879 N force at 0.7 MPa easily redirects heavy cartons.
Component Clamping
Provides reliable holding force for small to medium machined parts during secondary milling or drilling operations.
Gate Control
Operates access gates and machine safety doors, utilizing the adjustable air cushions to ensure soft, impact-free closing.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX275S the Right Cylinder?
When selecting this actuator, compare its 628 N output at 0.5 MPa against the smaller SAI32 bore (402 N) or the larger SAI50 bore (982 N) to ensure your pneumatic force margin is adequate. At a 275 mm stroke length, the unsupported piston rod is increasingly susceptible to bending under side loads. To prevent premature seal wear and rod bearing failure, always guide the load externally or utilize a dedicated guided cylinder.
This model serves as a direct replacement for any ISO 15552 cylinder with a 40 mm bore, 275 mm stroke, and G1/4 ports. Remember that standard double-acting cylinders lose their position when air pressure is exhausted or the control valve is centered; if your application requires true static holding without constant air pressure, consider the SAIL locking variant or an external rod lock.
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 SAI40BX275S FAQ
At a standard operating pressure of 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
Yes. As a genuine ISO 15552 profile cylinder, its mounting dimensions, port sizes (G1/4), and rod thread (M12x1.25) are fully interchangeable with other ISO 15552 standard cylinders of the same bore size.
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Genuine AirTAC parts produced by AirTAC factory.
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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