Airtac SAI40 Standard Air Cylinder SAI40AX55S
The AirTAC SAI40 Standard Air Cylinder SAI40AX55S 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 SAI40AX55S
The AirTAC SAI40X55-S is a double-acting ISO 15552 profile cylinder engineered for compact actuation. Delivering a push force of 879 N at 0.7 MPa, this 40 mm bore unit provides a 55 mm stroke that is ideal for short-travel clamping and indexing tasks. Its extruded aluminum barrel design omits tie-rods, yielding a cleaner profile that drops directly into standard ISO 15552 mounting interfaces.
This specific configuration includes an integrated magnet (-S) for direct compatibility with CMSE and DMSE sensor switches, fitting neatly into the dual-side grooves on the barrel. It is built with an SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance. The air connections use PT tapered threads, and adjustable air cushions at both ends ensure smooth end-of-stroke deceleration.
Airtac SAI40 Standard Air Cylinder SAI40AX55S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX55S |
|---|---|
| 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 SAI40AX55S
| 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 SAI40AX55S Is Used
Short-Stroke Clamping
Provides reliable 879 N clamping force at 0.7 MPa for securing workpieces during machining or welding operations.
Package Diverting
Actuates diverter arms on packaging lines where a compact 55 mm stroke quickly redirects lightweight cartons.
Gate Control
Operates small access gates or machine guards, utilizing the built-in magnet to confirm open and closed positions.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX55S the Right Cylinder?
Select this 40 mm bore model when an application requires moderate force within a tight footprint; if lower force is acceptable, stepping down to a 32 mm bore yields 563 N at 0.7 MPa, while upgrading to a 50 mm bore provides 1374 N for heavier loads. The 55 mm stroke keeps the rod fully supported, minimizing side-load bending concerns.
Because this is a standard double-acting cylinder, it will not hold a load if air pressure is lost or the valve is centered; use the SAIL variant with an air-released lock if fail-safe position holding is required. To match existing tooling, specify the exact 40 mm bore, 55 mm stroke, PT port threads, and the -S magnet option for direct interchangeability with other ISO 15552 cylinders.
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 SAI40AX55S FAQ
At an operating pressure of 0.7 MPa, this 40 mm bore cylinder generates a push force of 879 N and a pull force of 528 N. The theoretical maximum force at 1.0 MPa is 128 kgf.
Yes, the SAI40X55-S shares standardized ISO 15552 mounting dimensions, making it dimensionally interchangeable with other ISO 15552 profile cylinders. Ensure your setup accommodates the PT port threads and the -S magnet option.
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