Airtac SAI40 Standard Air Cylinder SAI40X400S
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X400S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- 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 SAI40X400S
The AirTAC SAI40X400-S is a double-acting ISO 15552 profile cylinder with a 40mm bore and 400mm stroke. It delivers a push force of 628 N and a pull force of 528 N at 0.5 MPa, making it suitable for medium-duty handling tasks.
This variant includes a magnet for position sensing via CMSE or DMSE switches fitted into the dual sensor grooves on the extruded aluminum barrel. The standard carbon steel piston rod provides robust performance, while adjustable air cushions at both ends ensure smooth deceleration across the 30-800 mm/s speed range.
Airtac SAI40 Standard Air Cylinder SAI40X400S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X400S |
|---|---|
| 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 SAI40X400S
| 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 SAI40X400S Is Used
Material Transfer
Drives 400mm stroke pushers on packaging lines to transfer medium-weight cardboard cartons between adjacent conveyors.
Component Sorting
Actuates diverter gates to route aluminum or steel parts based on size or material detection sensors.
Vertical Lifting
Raises lightweight product trays or tote bins using external linear guides to manage the 400mm stroke side load.
Is the Airtac SAI40 Standard Air Cylinder SAI40X400S the Right Cylinder?
Choose this 40mm bore when a 32mm bore (402 N push at 0.5 MPa) lacks sufficient thrust, but a 50mm bore (982 N push at 0.5 MPa) would be excessive. The 400mm stroke requires careful attention to side loads; long unsupported rods are prone to bending under lateral forces, so utilizing an external guide rail or a guided cylinder module is strongly recommended to prevent premature rod-bearing wear.
This profile cylinder is dimensionally interchangeable per ISO 15552, serving as a drop-in replacement for other ISO 15552 cylinders. To match this exact unit, select a 40mm bore, 400mm stroke, G1/4 PT port, and an LB or FA mounting accessory. Note that if an application must hold a load without live pressure, a plain SAI will drift; consider the SAIL or BSAI lock variant instead.
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 SAI40X400S FAQ
At 0.5 MPa operating pressure, this 40mm bore cylinder provides a push force of 628 N and a pull force of 528 N. At 0.7 MPa, the push force increases to 879 N.
Yes, the SAI40X400-S is built to the ISO 15552 standard. Its profile barrel and mounting dimensions are interchangeable with other ISO 15552 cylinders, making it a drop-in replacement.
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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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