Airtac SAI40 Standard Air Cylinder SAI40X550
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X550 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 550mm 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
- Stroke550 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 SAI40X550
The AirTAC SAI40X550 is a double-acting ISO 15552 profile cylinder offering a robust 550 mm stroke. It generates 628 N of push force at 0.5 MPa and 879 N at 0.7 MPa, making it well-suited for mid-range linear actuation tasks. The extruded aluminum barrel omits traditional tie rods, presenting a clean profile that drops directly into standardized ISO 15552 mounting interfaces.
For environmental adaptability, this configuration utilizes a standard carbon steel piston rod and PT tapered port threads. While the base model lacks a magnet for position sensing, the barrel retains dual-sided sensor grooves, allowing you to specify a -S variant later if you need CMSE or DMSE reed switches for automated feedback.
Airtac SAI40 Standard Air Cylinder SAI40X550 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X550 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 550 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 SAI40X550
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×550 | 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 SAI40X550 Is Used
Material Handling
Drives package diverters and sorting gates on 40 mm conveyor lines requiring reliable mid-range force.
Assembly Automation
Actuates clamping arms and positioning stops for light-duty component assembly machinery.
Packaging Equipment
Powers box folding mechanisms and pallet stacking guides where a 550 mm stroke is necessary.
Is the Airtac SAI40 Standard Air Cylinder SAI40X550 the Right Cylinder?
Stepping down to a 32 mm bore drops the 0.5 MPa push force to 402 N, whereas moving up to a 50 mm bore increases it to 982 N. At 550 mm, this stroke is long enough that side loads can heavily stress the rod bearing and cause bending. To manage this, use an external guide rail or a fully guided cylinder to prevent premature wear.
As a double-acting cylinder, air drives the piston in both directions, but it will not hold a load if air pressure is lost. If your application requires position holding without live pressure, consider the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variants. For a direct replacement, match the 40 mm bore, 550 mm stroke, G1/4 PT port, and appropriate mounting accessories like FA flanges or LB foot brackets.
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 SAI40X550 FAQ
The SAI40X550 generates 628 N of push force and 528 N of pull force at 0.5 MPa. At 0.7 MPa, the push force increases to 879 N.
Yes, the SAI40X550 is dimensionally interchangeable per ISO 15552 standards. You can drop it into existing ISO 15552 mounting footprints without modifying the equipment.
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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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