Airtac SAI40 Standard Air Cylinder SAI40AX290
The AirTAC SAI40 Standard Air Cylinder SAI40AX290 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 290mm 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
- Stroke290 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 SAI40AX290
The AirTAC SAI40X290 is a double-acting ISO 15552 profile cylinder engineered to deliver 879N of push force at 0.7 MPa. With a 290mm stroke, it provides the extended travel distance required for mid-range material handling and automated positioning tasks. The extruded aluminum barrel design eliminates tie-rods, presenting a clean exterior that integrates seamlessly into modern machinery.
Beyond the standard specifications, this particular configuration incorporates a SUS420J2 stainless steel rod (material code A) for superior corrosion and scratch resistance compared to standard carbon steel. It utilizes PT tapered port threads for a mechanically robust pneumatic connection. Because no magnet is specified, it is optimized for pure actuation without relying on external hall-effect sensors.
Airtac SAI40 Standard Air Cylinder SAI40AX290 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX290 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 290 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 SAI40AX290
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×290 | 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 SAI40AX290 Is Used
Package Diversion
Provides the 879N force and 290mm travel needed to push heavy cardboard cartons from a high-speed main conveyor belt to secondary packing lanes.
Component Staging
Moves machined metal parts across a 290mm gap to the next machining station, utilizing the SUS420J2 rod to resist moisture in coolant-rich environments.
Pallet Loading
Actuates a lifting mechanism to stage wooden pallets for automated stretch wrapping, taking advantage of the robust PT threaded port connection.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX290 the Right Cylinder?
Selecting this 40mm bore over the smaller 32mm variant upgrades your thrust from 563N to 879N at 0.7 MPa, giving you extra power for heavier end-of-stroke tooling without a massive footprint increase. If your application requires even less force, the 32mm bore provides 563N and saves space. For this 290mm stroke, side loads become a primary concern; long unsupported rods are highly susceptible to bending and premature bearing wear. To manage this, implement an external guide rail or utilize a guided cylinder body to absorb lateral forces and protect the rod bearing.
As a standard double-acting cylinder, this model relies entirely on live air pressure to hold its position. If pneumatic supply is lost or the directional valve is centered, the piston will drift and drop the load. The adjustable air cushions at both ends only decelerate the piston near stroke completion; they do not function as a locking brake. If your workflow demands true position holding without constant air pressure, consider the SAIL (air-released lock) variant or an external pilot-operated check valve. This unit is dimensionally interchangeable per ISO 15552, so you can drop it directly into existing setups using a 40mm bore, 290mm stroke, G1/4 port, and standard FA/FB flange or TC trunnion 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 SAI40AX290 FAQ
The SAI40X290 cylinder generates 628N of push force and 528N of pull force at 0.5 MPa. When operating at 0.7 MPa, the push force increases to 879N.
Yes, the SAI40X290 is a true ISO 15552 profile cylinder, making its mounting interface dimensionally interchangeable with other ISO 15552 cylinders of the same 40mm bore and 290mm stroke. It is not a specific brand's part, but it serves as a direct replacement.
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