Airtac SAI50 Standard Cylinder SAI50AX125S
The AirTAC SAI50 Standard Cylinder SAI50AX125S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 125mm 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.
- BoreØ50 mm
- Stroke125 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- 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 SAI50 Standard Cylinder SAI50AX125S
The AirTAC SAI50X125-S is a double-acting ISO 15552 profile cylinder engineered to deliver 982 N of push force at 0.5 MPa. With a 50 mm bore and 125 mm stroke, this unit is built for robust mid-range automation tasks. It features adjustable air cushions at both ends to smoothly decelerate the piston.
This specific configuration includes a -S magnet for direct compatibility with CMSE and DMSE sensor switches, which seat neatly into the extruded aluminum barrel's dual grooves. The piston rod is constructed from SUS420J2 stainless steel, offering excellent resistance to moisture and mild corrosion compared to standard carbon steel.
Airtac SAI50 Standard Cylinder SAI50AX125S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50AX125S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAI50 Standard Cylinder SAI50AX125S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×125 | 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 SAI50 Standard Cylinder SAI50AX125S Is Used
Mid-Force Clamping
Ideal for holding heavy metal castings during CNC machining, utilizing its 982 N push force to secure parts against cutting forces.
Package Diverting
Provides reliable actuation for mid-weight package routing gates on automated conveyor lines, ensuring smooth 125 mm strokes.
Material Ejection
Exerts sufficient pull force (825 N at 0.5 MPa) to eject molded plastic parts from tight tooling cavities without damaging the product.
Is the Airtac SAI50 Standard Cylinder SAI50AX125S the Right Cylinder?
Select this 50 mm bore model when a 40 mm bore falls short—stepping up from the 40 mm bore (628 N at 0.5 MPa) to the 50 mm bore yields a significant increase to 982 N. If your application requires less force, dropping to the 40 mm variant saves space and air consumption. Because the stroke is 125 mm, side-load stress on the rod bearing remains moderate, but always ensure the load is axially aligned to prevent premature seal wear.
As a true ISO 15552 profile cylinder, this SAI50X125-S serves as a direct replacement for other ISO 15552 cylinders, matching standardized mounting dimensions. It utilizes PT tapered port threads (G1/4) and pairs with standard FA/FB flanges or LB foot mounts. Remember that the standard adjustable cushion only decelerates the piston; it does not lock the rod. If your system loses air pressure, the load will drift, requiring an external pilot-operated check valve or the SAIL locking variant for secure holding.
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 SAI50 Standard Cylinder SAI50AX125S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. If you increase the pressure to 0.7 MPa, the push force rises to 1374 N.
Yes, the SAI50X125-S is dimensionally interchangeable per ISO 15552. It shares the same mounting interface and G1/4 port locations as other ISO 15552 profile cylinders, allowing for a direct replacement.
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1-Year Warranty
Covers non-human-caused product damage.
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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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