Airtac SAI40 Standard Air Cylinder SAI40BX35S
The AirTAC SAI40 Standard Air Cylinder SAI40BX35S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 35mm 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
- Stroke35 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 SAI40BX35S
The AirTAC SAI40X35-S is a double-acting ISO 15552 profile cylinder engineered for compact, high-cycle automation. Delivering a push force of 628 N and a pull force of 528 N at 0.5 MPa, this 40mm bore unit is tailored for short 35mm stroke movements. Its extruded aluminum barrel design omits tie-rods, providing a clean exterior that simplifies mounting and sensor placement.
This specific configuration includes a SUS304 stainless steel rod for superior corrosion resistance in washdown or mildly chemical environments. Equipped with a factory-installed magnet (-S), it seamlessly integrates with CMSE and DMSE reed switches via the dual sensor grooves on the barrel. Fluid ports feature a PT tapered thread type, ensuring a robust, mechanically sealed pneumatic connection.
Airtac SAI40 Standard Air Cylinder SAI40BX35S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX35S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 35 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 SAI40BX35S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×35 | 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 SAI40BX35S Is Used
Short-Stroke Clamping
Ideal for holding components securely during machining or welding, utilizing its 628 N push force within a tight 35mm stroke envelope.
Package Diverting
Provides rapid actuation for routing small to medium packages on conveyor lines, where the SUS304 rod withstands occasional washdowns.
Ejector Mechanisms
Delivers fast, repetitive ejection of finished parts from press dies, benefiting from the 30-800 mm/s speed range and dual-end cushioning.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX35S the Right Cylinder?
When specifying this actuator, consider that the 32mm bore variant offers 402 N of push force at 0.5 MPa, whereas stepping up to the 50mm bore yields 982 N. The 40mm bore strikes an optimal balance for mid-range clamping and lifting tasks. Because the stroke is only 35mm, rod-bearing bending is negligible, negating the need for external guide rails.
For operations requiring position holding upon air loss or valve centering, note that the standard adjustable air cushions only decelerate the piston at stroke ends and do not function as a brake. In such scenarios, explore the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock. To guarantee a seamless direct replacement, match the 40mm bore, 35mm stroke, PT G1/4 port, and your required mounting accessories like FA flange or LB foot brackets.
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 SAI40BX35S FAQ
At a standard operating pressure of 0.5 MPa, the SAI40X35-S generates a push force of 628 N and a pull force of 528 N. If pressure is increased to 0.7 MPa, the push force rises to 879 N.
Yes, as a genuine ISO 15552 profile cylinder, its mounting interface and envelope dimensions are standardized. It serves as a direct replacement for other ISO 15552 cylinders, provided you match the 40mm bore, 35mm stroke, and G1/4 port.
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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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