Airtac SAI40 Standard Air Cylinder SAI40BX400
The AirTAC SAI40 Standard Air Cylinder SAI40BX400 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 SAI40BX400
The AirTAC SAI40X400 is a double-acting ISO 15552 profile cylinder featuring a 40mm bore and a 400mm stroke. It provides a push force of 628 N and a pull force of 528 N at 0.5 MPa, making it a solid choice for medium-duty handling tasks.
Built with a SUS304 stainless steel rod, this model resists corrosion in humid environments. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to add CMSE or DMSE switches if you need position feedback later.
Airtac SAI40 Standard Air Cylinder SAI40BX400 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX400 |
|---|---|
| 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 SAI40BX400
| 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 SAI40BX400 Is Used
Material Transfer
Pushes packages or parts across a 400mm gap on processing lines.
Pallet Handling
Actuates medium-duty gating or diverting arms in logistics centers.
Component Indexing
Shifts workpieces into machining fixtures with 628 N of push force.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX400 the Right Cylinder?
If your application requires less force, the 32mm bore offers 402 N at 0.5 MPa, whereas stepping up to the 50mm bore yields 982 N. At 400mm of travel, the extended rod is highly susceptible to bending under side loads. Mount external guides or use a guided cylinder to prevent premature rod-bearing wear.
This 40mm bore uses a PT G1/4 port and an M12x1.25 rod thread. It serves as a direct replacement for any ISO 15552 cylinder with matching dimensions and mounting accessories. Remember that a standard SAI cylinder will drift if air pressure is lost; use the SAIL variant if your setup requires a pneumatic lock to hold a load safely.
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 SAI40BX400 FAQ
At 0.5 MPa, this cylinder provides 628 N of push force and 528 N of pull force. If you operate at 0.7 MPa, the push force increases to 879 N.
Yes, the SAI40X400 is dimensionally interchangeable with any ISO 15552 profile cylinder of the same 40mm bore and 400mm stroke. You can reuse your existing FA flange or LB foot mounting brackets.
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1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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