Airtac SAI40 Standard Air Cylinder SAI40AX20
The AirTAC SAI40 Standard Air Cylinder SAI40AX20 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- 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 SAI40AX20
The AirTAC SAI40X20 is a double-acting ISO 15552 profile cylinder engineered for compact, high-force actuation. It generates 628N of push force and 528N of pull force at 0.5 MPa, making it highly effective for short-stroke clamping and ejection tasks. The extruded aluminum barrel design omits tie rods for a clean exterior.
This specific configuration features a SUS420J2 stainless steel piston rod (material code A) for superior corrosion resistance over standard carbon steel. It uses PT tapered port threads and lacks a magnet, meaning it is optimized for pure mechanical force transfer without external position sensing.
Airtac SAI40 Standard Air Cylinder SAI40AX20 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX20 |
|---|---|
| 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 SAI40AX20
| 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 SAI40AX20 Is Used
Short-Stroke Clamping
Ideal for holding workpieces securely in machining fixtures where space is restricted but 628N of force is required.
Part Ejection
Quickly ejects finished components from automated machinery using a fast, compact 20mm linear push.
Gate Diverter
Actuates small diverter gates on packaging lines, providing reliable switching action in tight enclosures.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX20 the Right Cylinder?
Choose this 40mm bore when a 32mm cylinder (402N push at 0.5 MPa) lacks the necessary thrust for your tooling. The 20mm stroke is ideal for tight spaces where a longer stroke would risk collision. Because the stroke is only 20mm, side-load stress on the rod bearing is minimal, allowing direct mounting without auxiliary guides.
As a standard double-acting cylinder, this actuator will drift if air pressure is removed. For applications that require static load holding without continuous air supply, consider the SAIL (air-released lock) or BSAI (clamp-lock) variants. Being dimensionally interchangeable per ISO 15552, it serves as a direct replacement for any standard ISO 15552 profile cylinder with a 40mm bore, 20mm stroke, and G1/4 port.
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 SAI40AX20 FAQ
At 0.5 MPa operating pressure, this 40mm bore cylinder provides 628N of push force and 528N of pull force. At the maximum 1.0 MPa pressure, it can reach up to 128 kgf.
Yes, the SAI40X20 is a genuine ISO 15552 profile cylinder. Its mounting dimensions and G1/4 ports are fully interchangeable with other standard ISO 15552 cylinders, allowing for seamless direct replacement.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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