Airtac SAI40 Standard Air Cylinder SAI40BX400S
The AirTAC SAI40 Standard Air Cylinder SAI40BX400S 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 SAI40BX400S
The AirTAC SAI40X400-S is a double-acting ISO 15552 profile cylinder engineered to deliver 628 N of push force and 528 N of pull force at 0.5 MPa. Its 400 mm stroke provides the extended travel needed for material handling and automated sorting tasks. As a genuine AirTAC component, it ensures dimensional interchangeability with other ISO 15552 standard cylinders.
This specific configuration features a SUS304 stainless steel rod (material code B) for superior corrosion resistance in humid or washdown environments. The integrated magnet (-S) enables seamless position detection using CMSE or DMSE switches mounted directly into the dual sensor grooves on the extruded aluminum barrel. Fluid supply is routed through PT tapered G1/4 ports.
Airtac SAI40 Standard Air Cylinder SAI40BX400S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX400S |
|---|---|
| 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 SAI40BX400S
| 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 SAI40BX400S Is Used
Package Sorting Diverter
Uses the 400 mm stroke to push parcels off a main conveyor belt, relying on the 628 N push force to redirect heavy cartons smoothly.
Pallet Handling Gate
Actuates entry and exit gates in automated storage systems, where the SUS304 rod provides reliable operation despite dusty and occasionally humid warehouse conditions.
Component Ejection
Ejects machined parts from a CNC enclosure, using adjustable air cushions at both ends to decelerate the piston and prevent end-cap impact at high speeds.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX400S the Right Cylinder?
Choose this 40 mm bore when an application requires more power than a 32 mm bore (which provides 402 N at 0.5 MPa) but does not warrant the bulk of a 50 mm bore (982 N at 0.5 MPa). The 400 mm stroke pushes the limits of standard unsupported travel, meaning side loads can cause excessive rod-bearing wear or bending. For optimal longevity, pair this cylinder with external guide rails or select a fully guided cylinder to absorb lateral forces.
Because it is a double-acting pneumatic cylinder, air pressure is required to drive the piston in both directions. If your machinery loses air pressure or the directional control valve centers, the piston will drift and cannot hold a load. For dead-end holding requirements, specify the SAIL variant with an air-released lock or utilize 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 SAI40BX400S FAQ
At a standard operating pressure of 0.5 MPa, 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 SAI40X400-S is dimensionally interchangeable per ISO 15552. It shares standard mounting interfaces and G1/4 PT ports, allowing it to serve as a direct replacement for other ISO 15552 profile cylinders without modifying the machine frame.
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Covers non-human-caused product damage.
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