Airtac SAI40 Standard Air Cylinder SAI40X20
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 20mm 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
- Stroke20 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 SAI40X20
The AirTAC SAI40X20 is a double-acting ISO 15552 profile cylinder engineered for short-stroke actuation. It generates 628 N of push force at 0.5 MPa, making it well-suited for compact clamping and ejection tasks. The extruded aluminum barrel design omits tie rods, providing a clean exterior that drops directly into standard ISO 15552 mounting footprints.
This specific configuration features a standard carbon steel piston rod and PT tapered port threads. Because it lacks the -S magnet option, it operates without electronic position sensing. For environments exceeding standard temperature limits, the cylinder can be specified with Viton (H) seals instead of the default TPU.
Airtac SAI40 Standard Air Cylinder SAI40X20 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 20 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 SAI40X20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×20 | 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 SAI40X20 Is Used
Short-Stroke Clamping
Ideal for securing lightweight components during machining, utilizing its 628 N push force to hold parts firmly in place within confined fixtures.
Package Ejection
Provides rapid 20 mm actuation to push small cartons or products off a conveyor belt into a secondary packaging chute.
Gate Diverting
Actuates small diverter gates on automated assembly lines, offering quick and precise directional changes for component routing.
Is the Airtac SAI40 Standard Air Cylinder SAI40X20 the Right Cylinder?
Select this 40 mm bore when a 32 mm bore (providing 402 N at 0.5 MPa) is insufficient for the workload, but a 50 mm bore (982 N at 0.5 MPa) would be physically oversized. The 20 mm stroke is optimal for extremely tight spaces where only a brief actuation distance is required.
Because the standard SAI series does not incorporate a locking mechanism, the piston will drift if air pressure is lost. If your application requires dead-load holding, consider the SAIL variant with an air-released lock. This model is fully interchangeable with other ISO 15552 cylinders of the same bore and 20 mm stroke, utilizing standard FA flange or LB foot mounts.
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 SAI40X20 FAQ
At an operating pressure of 0.5 MPa, the SAI40X20 generates 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 SAI40X20 is dimensionally interchangeable per ISO 15552 standards. You can replace other ISO 15552 profile cylinders of the same bore and stroke by matching the PT port and standard mounting accessories.
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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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