Airtac SAI40 Standard Air Cylinder SAI40BX290
The AirTAC SAI40 Standard Air Cylinder SAI40BX290 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 SAI40BX290
The AirTAC SAI40X290 is a double-acting ISO 15552 profile cylinder offering 628N of push force at 0.5MPa and 879N at 0.7MPa. Its 290mm stroke is ideal for medium-travel material handling and packaging tasks. This extruded aluminum barrel design omits tie-rods, providing a clean exterior that simplifies mounting accessory installation.
This specific configuration features a SUS304 stainless steel piston rod (option B) for superior corrosion resistance in humid or washdown environments. It uses PT tapered port threads. Without a magnet, it relies on external position sensing, but the barrel retains dual sensor grooves should you later need electronic detection.
Airtac SAI40 Standard Air Cylinder SAI40BX290 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX290 |
|---|---|
| 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 SAI40BX290
| 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 SAI40BX290 Is Used
Packaging Lines
Drives product diverters and pushers across 290mm travel distances with reliable 879N force at 0.7MPa.
Component Insertion
Presses bearings or pins into housings, utilizing the corrosion-resistant SUS304 rod in light moisture environments.
Pallet Handling
Actuates mid-sized gating mechanisms and product stops within automated storage and retrieval systems.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX290 the Right Cylinder?
If your application requires less force, stepping down to the 32mm bore yields 402N at 0.5MPa. Conversely, moving up to the 50mm bore provides 982N at 0.5MPa. At 290mm of stroke, the unsupported rod length is significant; side loads can cause rod-bearing bending. Use an external guide rail or a guided cylinder to prevent premature wear and sticking.
When replacing an existing ISO 15552 cylinder, match the 40mm bore, 290mm stroke, G1/4 port size, and mounting accessories like FA flanges or LB foot brackets. Note that a standard SAI does not hold loads when air pressure is removed; the piston will drift. For fail-safe holding, consider the SAIL pneumatic lock variant or 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 SAI40BX290 FAQ
At an operating pressure of 0.5MPa, the SAI40X290 generates 628N of push force and 528N of pull force. At 0.7MPa, the push force increases to 879N.
Yes, the SAI40X290 is dimensionally interchangeable per ISO 15552. Match your existing 40mm bore, 290mm stroke, and G1/4 port size for a direct replacement.
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