Airtac SAI40 Standard Air Cylinder SAI40AX250S
The AirTAC SAI40 Standard Air Cylinder SAI40AX250S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 250mm 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
- Stroke250 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 SAI40AX250S
The AirTAC SAI40X250-S is a double-acting ISO 15552 profile cylinder engineered to deliver 628N of push force at 0.5 MPa and 879N at 0.7 MPa. Its 250mm stroke is ideal for medium-travel material handling tasks. Because it features a built-in magnet (-S), it integrates seamlessly with CMSE or DMSE reed switches for precise end-of-stroke detection.
This specific configuration features a SUS420J2 stainless steel piston rod (material code A), offering excellent corrosion resistance for humid or mildly chemically exposed environments. The extruded aluminum barrel includes sensor grooves on both sides, simplifying switch mounting. As a genuine AirTAC component, it provides a reliable, direct interchangeable solution for any standard ISO 15552 mounting footprint.
Airtac SAI40 Standard Air Cylinder SAI40AX250S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40AX250S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 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 SAI40AX250S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×250 | 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 SAI40AX250S Is Used
Packaging Line Diverters
Ideal for actuating pop-up diverters on packaging conveyors, utilizing the 250mm stroke to redirect cartons smoothly at high cycling speeds.
Component Insertion
Provides the consistent 879N push force at 0.7 MPa required to press bushings or pins into housings during automated assembly operations.
Pallet Stop Gates
Deploys effectively in pallet handling systems, extending 250mm to halt heavy pallets at workflow stations before retracting for passage.
Is the Airtac SAI40 Standard Air Cylinder SAI40AX250S the Right Cylinder?
If your application requires less force, stepping down to a 32mm bore yields 563N at 0.7 MPa, while moving up to a 50mm bore provides 1374N at 0.7 MPa for heavier payloads. At 250mm of travel, the unsupported piston rod is susceptible to bending under side loads. To prevent premature seal wear and rod-bearing failure, guide the load externally or utilize a dedicated guided cylinder.
This model uses PT tapered port threading and operates at speeds between 30 and 800 mm/s. It functions strictly as a double-acting actuator. Note that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not hold a load. If pressure is lost, the rod will drift. For safety-critical holding, consider the SAIL lock variant or an external pilot-operated check valve. This profile cylinder is dimensionally interchangeable with other ISO 15552 units, supporting standard FA, FB, LB, and TC mounting accessories.
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 SAI40AX250S FAQ
This 40mm bore cylinder generates 628N of push force at 0.5 MPa and 879N at 0.7 MPa. The pull force is 528N at 0.5 MPa and 879N at 0.7 MPa.
Yes. The SAI40X250-S is a genuine AirTac profile cylinder that is dimensionally interchangeable per ISO 15552 standards. It shares the exact same mounting interface and port sizes, allowing a direct replacement.
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.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAI40 Standard Air Cylinder SAI40AX250S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.