Airtac SAI40 Standard Air Cylinder SAI40AX55
The AirTAC SAI40 Standard Air Cylinder SAI40AX55 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 55mm 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
- Stroke55 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 SAI40AX55
The AirTAC SAI40X55 is a double-acting ISO 15552 profile cylinder engineered to deliver 628 N of push force at 0.5 MPa. Its 55 mm stroke is ideal for short-travel clamping, gating, and ejection tasks. The extruded aluminum barrel design omits tie rods, providing a clean exterior that resists debris buildup.
This specific unit is configured with an SUS420J2 stainless steel piston rod for superior corrosion resistance over standard carbon steel. It uses PT tapered port threads and lacks a magnet, meaning it is optimized for purely mechanical actuation without sensor feedback.
Airtac SAI40 Standard Air Cylinder SAI40AX55 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX55 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 55 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 SAI40AX55
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×55 | 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 SAI40AX55 Is Used
Short-Stroke Clamping
Provides 628 N of clamping force at 0.5 MPa, ideal for securing workpieces during light machining or welding operations.
Package Diverter
The 55 mm stroke quickly pushes lightweight cartons or parts off a conveyor belt without occupying excessive machine space.
Gate Ejection
Ejects molded or stamped components from a press bed with rapid 30-800 mm/s cycling speeds.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX55 the Right Cylinder?
Choose this 40 mm bore when a 32 mm bore (402 N push at 0.5 MPa) lacks the necessary thrust, but a 50 mm bore (982 N) would be physically oversized. The 55 mm stroke offers a compact footprint for tight machine layouts. Because this stroke is under 300 mm, side-load bending is minimal, but always ensure the load is axially aligned to maximize rod bearing life.
For applications requiring the piston to hold a load when air pressure is exhausted, a standard SAI cylinder will drift; you must specify the SAIL (air-released lock) variant or use an external rod lock. As a true ISO 15552 profile cylinder, this model is dimensionally interchangeable with other ISO 15552 cylinders. Replacement match: 40 mm bore, 55 mm stroke, PT port, standard mounting accessory (like FA flange), no magnet required.
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 SAI40AX55 FAQ
At 0.5 MPa operating pressure, the SAI40X55 generates 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
Yes, the SAI40X55 is a true ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 cylinders. It matches the standard 40 mm bore mounting interface and PT port.
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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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