Airtac SAI40 Standard Air Cylinder SAI40X300S
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X300S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- 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 SAI40X300S
The AirTAC SAI40X300-S is a double-acting ISO 15552 profile cylinder featuring a 40mm bore and 300mm stroke. It generates 628N of push force at 0.5 MPa and 879N at 0.7 MPa, making it well-suited for mid-range automation tasks. The extruded aluminum barrel omits tie rods, providing a clean exterior that drops directly into existing ISO 15552 mounting interfaces.
This specific configuration includes a standard carbon steel piston rod and a magnetic piston (-S) for position detection. The dual sensor grooves machined into the barrel accept standard CMSE or DMSE reed switches. Fluid porting utilizes G1/4 PT tapered threads, while adjustable air cushions at both ends manage end-of-stroke impact.
Airtac SAI40 Standard Air Cylinder SAI40X300S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X300S |
|---|---|
| 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 SAI40X300S
| 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 SAI40X300S Is Used
Package Sorting
Extends 300mm to push diverted parcels off a main conveyor belt with reliable 879N force at 0.7 MPa.
Carton Push-off
Handles the rejection of standard corrugated cartons in packaging lines using its magnetic piston for end-of-stroke confirmation.
Gate Control
Actuates safety gates or machine access doors where a long reach and moderate thrust are required.
Is the Airtac SAI40 Standard Air Cylinder SAI40X300S the Right Cylinder?
Select this 40mm bore when an application requires upward of 628N push force at 0.5 MPa but does not warrant the 982N capacity of the adjacent 50mm bore variant. The 300mm stroke provides ample extension for packaging or material handling, but because the stroke equals or exceeds 300mm, side loads become a primary concern. Unsupported rods are prone to bending under lateral loads; utilizing an external guide rail or a dedicated guided cylinder module is strongly recommended to prevent premature rod-bearing wear.
Being a true ISO 15552 profile cylinder, this unit is dimensionally interchangeable with other ISO 15552 cylinders, allowing seamless retrofits using standard FA/FB flange or LB foot mounting accessories. Note that the adjustable air cushions only decelerate the piston near the stroke ends; they do not hold a load. If the application requires position retention upon loss of air pressure, consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock.
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 SAI40X300S FAQ
This 40mm bore cylinder provides a push force of 628N at 0.5 MPa and 879N at 0.7 MPa, with a pull force of 528N at 0.5 MPa.
Yes, the SAI series is a genuine ISO 15552 profile cylinder. It is dimensionally interchangeable with other ISO 15552 cylinders and utilizes standard mounting accessories like LB foot brackets and FA flanges.
Authorized Export Seller
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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