Airtac SAI40 Standard Air Cylinder SAI40AX650
The AirTAC SAI40 Standard Air Cylinder SAI40AX650 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 650mm 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
- Stroke650 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 SAI40AX650
The AirTAC SAI40X650 is a double-acting ISO 15552 profile cylinder engineered to deliver 628 N of push force at 0.5 MPa and 879 N at 0.7 MPa. Featuring a 650 mm stroke, this extruded aluminum barrel design eliminates tie-rods, providing a smooth exterior that simplifies cleaning and sensor mounting. It operates efficiently at speeds between 30 and 800 mm/s.
This specific configuration utilizes a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. It uses PT tapered port threads, and because it lacks the -S magnet suffix, it is optimized for pure mechanical actuation without integrated position sensing.
Airtac SAI40 Standard Air Cylinder SAI40AX650 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX650 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 650 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 SAI40AX650
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×650 | 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 SAI40AX650 Is Used
Package Diverting
Provides the 879 N force and 650 mm reach needed to actuate large diverting arms on high-speed packaging lines, moving heavy cartons smoothly between belt sections.
Component Ejection
Ideal for pushing molded or machined parts out of a press area, utilizing the full 650 mm stroke to ensure the component clears the working zone safely.
Pallet Handling
Drives lifting or positioning mechanisms in automated storage systems where the 40 mm bore offers sufficient thrust to index lighter pallets without excessive air consumption.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX650 the Right Cylinder?
Selecting this 40 mm bore unit makes sense when an application requires more thrust than a 32 mm bore (which provides 402 N at 0.5 MPa) but does not warrant the physical size of a 50 mm bore (982 N at 0.5 MPa). At 650 mm of stroke, the unsupported rod length is substantial; side loads can cause severe bending stress on the rod bearing. To prevent premature seal wear and rod damage, implement an external guide rail or utilize a dedicated guided cylinder.
As a dimensionally interchangeable ISO 15552 component, this model serves as a direct replacement for other standard profile cylinders sharing the same 40 mm bore, 650 mm stroke, and PT G1/4 port interface. It features adjustable air cushions at both ends to decelerate the piston smoothly. Note that standard double-acting cylinders drift when air pressure is removed; if the mechanism must hold a load during a pressure loss, specify the SAIL variant with an air-released lock or use an external pilot-operated check valve.
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 SAI40AX650 FAQ
The SAI40X650 generates 628 N of push force and 528 N of pull force at 0.5 MPa. At 0.7 MPa, the push force increases to 879 N.
Yes. The SAI40X650 is dimensionally interchangeable per ISO 15552. You can use it as a direct replacement for other ISO 15552 profile cylinders with a 40 mm bore, 650 mm stroke, and G1/4 port, provided your mounting accessories match.
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1-Year Warranty
Covers non-human-caused product damage.
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