Airtac SAI40 Standard Air Cylinder SAI40AX550S
The AirTAC SAI40 Standard Air Cylinder SAI40AX550S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- 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 SAI40AX550S
The AirTAC SAI40X550-S is a double-acting ISO 15552 profile cylinder engineered for demanding linear motion tasks. It delivers a push force of 628 N and a pull force of 528 N at 0.5 MPa. The 550 mm stroke is ideal for automated machinery requiring extended travel distances without sacrificing structural integrity.
Equipped with a SUS420J2 stainless steel piston rod (material code A), this model provides superior corrosion resistance compared to standard carbon steel. The -S suffix indicates an integrated magnet, allowing seamless operation with CMSE or DMSE sensor switches fitted directly into the extruded aluminum barrel's dual grooves. It also features PT tapered port threads for a robust pneumatic connection.
Airtac SAI40 Standard Air Cylinder SAI40AX550S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX550S |
|---|---|
| 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 SAI40AX550S
| 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 SAI40AX550S Is Used
Extended Package Sorting
Drives diverter arms on high-speed conveyor lines over a 550 mm span, utilizing the integrated magnet for precise end-of-stroke position confirmation.
Multi-Stage Forming Press
Provides consistent 628 N push force at 0.5 MPa across long-stroke press operations, with the SUS420J2 rod resisting moisture in washdown environments.
Vertical Lift Gates
Actuates automated warehouse partition doors, relying on adjustable air cushions at both ends to smoothly decelerate the 550 mm travel.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX550S the Right Cylinder?
When evaluating this 40 mm bore option, consider stepping down to a 32 mm bore if your application only requires 402 N of push force at 0.5 MPa, which saves valuable space. Conversely, if your load demands more than 628 N, upgrading to a 50 mm bore yields 982 N.
Because this 550 mm stroke creates a long unsupported rod extension, side loads can cause severe bending stresses on the rod bearing. To prevent premature wear, pair this cylinder with an external linear guide or select a guided cylinder assembly. For applications requiring the load to be held securely in place during a loss of air pressure, note that the standard adjustable air cushions only decelerate the piston at stroke ends and do not function as a locking mechanism; utilize an external rod lock or the SAIL variant for true position holding. As a direct replacement, it matches standard ISO 15552 mounting dimensions, features a PT G1/4 port, and accepts standard FA/FB 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 SAI40AX550S FAQ
At an operating pressure of 0.5 MPa, this 40 mm bore cylinder 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.
No, the standard SAI cylinder does not hold position without live air pressure. The adjustable air cushions only decelerate the piston near the stroke ends but do not lock the load. For fail-safe holding, use the SAIL lock variant or an external rod lock.
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Covers non-human-caused product damage.
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