Airtac SAI40 Standard Air Cylinder SAI40X35S
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X35S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- 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 SAI40X35S
The AirTAC SAI40X35-S is a double-acting ISO 15552 profile cylinder engineered for compact, high-cycle tasks. It supplies 628 N of push force and 528 N of pull force at 0.5 MPa, making it well-suited for short 35 mm stroke movements. The extruded aluminum barrel design omits tie-rods, providing a clean exterior that drops directly into standardized ISO 15552 mounting footprints.
This specific configuration includes a magnetic piston (-S) for position detection via CMSE or DMSE switches, which seat neatly into the sensor grooves machined on both sides of the barrel. It utilizes a standard carbon steel piston rod and features PT tapered port threads. For environments requiring higher thermal resistance, the seal stack can be upgraded from standard TPU to Viton (H).
Airtac SAI40 Standard Air Cylinder SAI40X35S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X35S |
|---|---|
| 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 SAI40X35S
| 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 SAI40X35S Is Used
Short-Stroke Clamping
Ideal for securing lightweight machined components during secondary milling or drilling operations with rapid 35 mm actuation.
Package Diverting
Provides the necessary 628 N push force to actuate sorting gates and pusher arms on high-speed packaging conveyors.
Ejector Mechanisms
Delivers quick, repetitive ejection of molded or stamped parts from press beds, utilizing the integrated magnetic piston for end-of-stroke confirmation.
Is the Airtac SAI40 Standard Air Cylinder SAI40X35S the Right Cylinder?
Select this 40 mm bore when an application demands more power than a 32 mm bore (which offers 402 N push at 0.5 MPa) but lacks the physical space for a 50 mm variant. The 35 mm stroke is optimal for rapid clamping or ejecting operations where minimizing extension time is critical. Because the stroke is short, rod-bearing bending is negligible, eliminating the need for external guides.
As a double-acting pneumatic actuator, the SAI40X35-S relies on continuous air pressure to maintain its position. If air is exhausted or pressure drops, the piston will drift. For operations that must hold a load mechanically during a pressure loss, consider integrating the SAIL locking variant or an external pilot-operated check valve.
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 SAI40X35S FAQ
At a 0.5 MPa operating pressure, this 40 mm bore cylinder generates 628 N of push force and 528 N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 879 N.
Yes. The SAI40X35-S is built to the ISO 15552 dimensional standard, meaning it is mechanically interchangeable with other ISO 15552 profile cylinders of the same bore size, allowing for a direct drop-in replacement.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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