Airtac SAI40 Standard Air Cylinder SAI40AX135S
The AirTAC SAI40 Standard Air Cylinder SAI40AX135S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 135mm 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
- Stroke135 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 SAI40AX135S
The AirTAC SAI40X135-S is a double-acting ISO 15552 profile cylinder featuring a 40mm bore and a 135mm stroke. It delivers a push force of 628 N and a pull force of 528 N at 0.5 MPa, making it well-suited for medium-duty handling and positioning tasks. The extruded aluminum barrel design omits tie rods, providing a clean exterior that drops into standard ISO 15552 mounting interfaces.
This specific configuration includes a built-in magnet (-S) for seamless integration with CMSE or DMSE reed switches along the dual sensor grooves. Furthermore, the piston rod is constructed from SUS420J2 stainless steel, offering enhanced resistance to corrosion compared to standard carbon steel. It features PT tapered port threads and adjustable air cushions at both ends to manage impact at stroke completion.
Airtac SAI40 Standard Air Cylinder SAI40AX135S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX135S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 135 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 SAI40AX135S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×135 | 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 SAI40AX135S Is Used
Component Ejection
Pushes finished metal parts out of a machining fixture with 628 N of force at 0.5 MPa, utilizing the 135mm stroke to clear the work zone completely.
Package Diverting
Actuates a routing gate on a packaging line, relying on the SUS420J2 stainless steel rod to withstand occasional washdowns and humid factory environments.
Pallet Stops
Functions as a pneumatic stop block for lightweight pallets arriving at an assembly station, using adjustable cushions to soften the end-of-stroke impact.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX135S the Right Cylinder?
If your application requires less force, stepping down to a 32mm bore yields 402 N of push force at 0.5 MPa, while moving up to a 50mm bore provides 982 N for heavier loads. At a stroke of 135mm, the rod bearing experiences moderate stress, but for any setup exceeding 300mm, incorporating an external guide rail or a guided cylinder becomes critical to prevent rod bending under side loads.
To mount this cylinder, utilize standard ISO 15552 accessories like LB foot brackets or FA flanges. The pneumatic connection uses a PT G1/4 port. Because this is a standard double-acting cylinder, it relies on continuous air pressure to hold position; if your cycle requires dead-stop holding without live pressure, consider 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 SAI40AX135S FAQ
At an operating pressure of 0.5 MPa, this 40mm bore cylinder 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. The SAI40X135-S is a true ISO 15552 profile cylinder, meaning its mounting dimensions are fully interchangeable with other ISO 15552 cylinders. You can drop it into existing foot, flange, or trunnion mounts without modifying the machine frame.
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