Airtac SAI40 Standard Air Cylinder SAI40AX300S
The AirTAC SAI40 Standard Air Cylinder SAI40AX300S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 300mm 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
- Stroke300 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 SAI40AX300S
The AirTAC SAI40X300-S is a double-acting ISO 15552 profile cylinder featuring a 40mm bore and 300mm stroke. It delivers a push force of 628 N at 0.5 MPa, making it well-suited for medium-duty positioning and handling tasks. The extruded aluminum barrel design omits tie rods while maintaining strict dimensional interchangeability with other ISO 15552 cylinders.
This specific configuration includes a SUS420J2 stainless steel rod (option A) for superior corrosion resistance over standard carbon steel. The -S suffix indicates an integrated magnet, allowing seamless use with CMSE or DMSE sensor switches fitted into the dual-side barrel grooves.
Airtac SAI40 Standard Air Cylinder SAI40AX300S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX300S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 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 SAI40AX300S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×300 | 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 SAI40AX300S Is Used
Package Diverting
Actuates routing gates on packaging lines where the 628 N output force easily pushes cartons onto secondary chutes.
Component Clamping
Secures medium-sized machined parts during milling or drilling operations, utilizing the full 300mm travel to accommodate varying fixture widths.
Vertical Elevation
Raises lightweight totes in low-rise storage buffers, relying on the integrated magnet for precise end-of-stroke position feedback.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX300S the Right Cylinder?
Select this 40mm bore when a 32mm bore (providing 402 N at 0.5 MPa) is insufficient for your load, but a 50mm bore (982 N at 0.5 MPa) would be excessive overkill. At 300mm of stroke, the unsupported piston rod is vulnerable to bending under side loads; utilizing an external guide rail or a guided cylinder module is highly recommended to prevent premature rod-bearing wear.
The PT (tapered) port thread is G1/4. For direct replacements, match the 40mm bore, 300mm stroke, and mounting accessory (such as an LB foot or FA flange). Note that the adjustable air cushions only decelerate the piston near stroke ends; they do not hold loads. If pressure drops, the rod will drift, so consider the SAIL variant for pneumatic locking.
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 SAI40AX300S FAQ
At 0.5 MPa operating pressure, this 40mm 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.
Yes, the SAI40X300-S is dimensionally interchangeable per ISO 15552. Ensure you match the 40mm bore, 300mm stroke, G1/4 port, and mounting accessories for a seamless direct replacement.
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