Airtac SAI40 Standard Air Cylinder SAI40AX400
The AirTAC SAI40 Standard Air Cylinder SAI40AX400 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 400mm 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
- Stroke400 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 SAI40AX400
The AirTAC SAI40X400 is a double-acting ISO 15552 profile cylinder featuring a 40mm bore and 400mm stroke. It provides a push force of 628N at 0.5 MPa and 879N at 0.7 MPa, making it highly effective for medium-duty transfer tasks. The extruded aluminum barrel design omits tie-rods, presenting a clean exterior that integrates smoothly into modern machinery.
This specific configuration utilizes a SUS420J2 stainless steel piston rod (material code A) for superior corrosion and scratch resistance compared to standard carbon steel. Additionally, the PT tapered port threading ensures a robust, mechanically sealed pneumatic connection. For applications requiring dual-end position sensing, the barrel features integrated sensor grooves on both sides, ready to accept CMSE or DMSE switches when a magnet is specified.
Airtac SAI40 Standard Air Cylinder SAI40AX400 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX400 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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 SAI40AX400
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×400 | 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 SAI40AX400 Is Used
Package Sorting
Provides the 879N push force needed to divert medium-weight packages across a 400mm stroke on automated sorting lines.
Component Ejection
Uses the durable SUS420J2 rod to reliably push machined parts out of a fixture, resisting minor impacts and moisture.
Pallet Positioning
Shifts empty pallets into a wrapping station, utilizing the full 400mm travel distance for precise placement.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX400 the Right Cylinder?
Choose this 40mm bore when a 32mm bore (offering 563N at 0.7 MPa) lacks sufficient thrust, but a 50mm bore (1374N at 0.7 MPa) would be excessive overkill. At a 400mm stroke length, the unsupported rod extension is substantial; side loads can cause severe rod-bearing bending and premature seal failure. To manage this, implement an external guide rail or utilize a fully guided cylinder to absorb lateral forces.
As a true ISO 15552 standard cylinder, this model serves as a direct replacement for any matching 40mm bore ISO 15552 unit. Ensure your setup matches the G1/4 port size, PT thread standard, and required mounting accessories like FA/FB flanges or TC trunnions. Note that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not hold a load. If pressure drops, the rod drifts, requiring a SAIL or BSAI variant for secure locking.
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 SAI40AX400 FAQ
At an operating pressure of 0.5 MPa, the push force is 628N and the pull force is 528N. When increased to 0.7 MPa, it delivers 879N of push force and 879N of pull force.
Yes, the SAI40X400 is dimensionally interchangeable per ISO 15552 mounting interfaces. You can drop it in as a replacement for other 40mm ISO 15552 profile cylinders, provided your system matches the G1/4 port and PT thread type.
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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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