Airtac SAI50 Standard Cylinder SAI50X125S
The AirTAC SAI50 Standard Cylinder SAI50X125S 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 SAI50X125S
The AirTAC SAI50X125-S is a double-acting ISO 15552 profile cylinder engineered to deliver a robust 982 N of push force at 0.5 MPa. Its 125 mm stroke strikes an optimal balance between compact footprint and extended reach, making it highly suitable for mid-range automation tasks. Because it adheres strictly to ISO 15552 mounting dimensions, it serves as a seamless direct replacement for other profile cylinders matching this standard.
This specific configuration features a standard carbon steel piston rod for high tensile strength and includes a built-in magnet (-S) for position sensing. The extruded aluminum barrel incorporates sensor grooves on both sides, allowing straightforward installation of CMSE or DMSE series reed switches without requiring additional brackets.
Airtac SAI50 Standard Cylinder SAI50X125S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50X125S |
|---|---|
| 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 SAI50X125S
| 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 SAI50X125S Is Used
Package Diversion
Ideal for actuating sorting gates on packaging lines where the 982 N force easily redirects cartons at high cycling speeds.
Component Clamping
Provides reliable, consistent holding pressure for mid-sized machining fixtures, utilizing the magnetic piston for precise end-of-stroke confirmation.
Pallet Stops
Serves as a robust pneumatic stop mechanism in conveyor transport systems, halting pallets reliably before a workstation.
Is the Airtac SAI50 Standard Cylinder SAI50X125S the Right Cylinder?
If your application requires slightly less force, stepping down to a bore 40 cylinder yields 628 N at 0.5 MPa, whereas moving up to a bore 63 unit provides 1559 N for heavier payloads. The SAI50X125-S utilizes a PT tapered port thread and operates efficiently across a speed range of 30-800 mm/s. When configuring your setup, ensure you pair the cylinder with appropriate FA or FB flange accessories to match your ISO 15552 mounting interface.
For processes that demand position holding or fail-safe load locking upon air pressure loss, remember that the standard adjustable air cushions only decelerate the piston at stroke ends and do not act as a brake. In such scenarios, consider deploying the SAIL (air-released lock) variant or an external rod lock mechanism to prevent drifting.
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 SAI50X125S FAQ
At a standard operating pressure of 0.5 MPa, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
Yes, the SAI50X125-S is dimensionally interchangeable per ISO 15552 standards. You can use it as a direct replacement for any cylinder matching that ISO mounting interface, provided the 125 mm stroke and PT port fit your design.
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