Airtac SAI50 Standard Cylinder SAI50X125SFTC
The AirTAC SAI50 Standard Cylinder SAI50X125SFTC 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 SAI50X125SFTC
The AirTAC SAI50X125-S is a double-acting ISO 15552 profile cylinder offering a theoretical push force of 982 N at 0.5 MPa. Its 125 mm stroke is well-suited for medium-duty positioning and clamping tasks. The extruded aluminum barrel design omits tie rods, providing a clean exterior that simplifies the mounting of proximity sensors.
This specific configuration includes a magnet for use with CMSE and DMSE series switches, which ride securely in the integrated sensor grooves on both sides of the barrel. It features standard carbon steel piston rod material, PT threaded G1/4 ports, and adjustable air cushions at both ends to manage end-of-stroke impact. Standard TPU seals handle typical industrial temperatures, with Viton (H) options available for high-heat environments.
Airtac SAI50 Standard Cylinder SAI50X125SFTC Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50X125SFTC |
|---|---|
| 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 SAI50X125SFTC
| 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 SAI50X125SFTC Is Used
Medium-Force Clamping
Provides 982 N of push force at 0.5 MPa, ideal for securing metal workpieces during machining or welding operations.
Package Diverting
The 125 mm stroke offers rapid actuation for sorting arms and pop-up transfers on automated packaging lines.
Sensor-Ready Gating
The integrated magnet allows CMSE switches to confirm piston position for precise control of safety gates and material stops.
Is the Airtac SAI50 Standard Cylinder SAI50X125SFTC the Right Cylinder?
When sizing this actuator, note that stepping down to a 40 mm bore reduces the 0.5 MPa push force to 628 N, while moving up to a 63 mm bore increases it to 1559 N. The 125 mm stroke is safely within standard length limits, so rod-bearing bending is minimal. For applications experiencing high lateral loads, pair this cylinder with an external guide rail to prevent premature wear.
Because this is a standard double-acting cylinder, it does not hold its position if air pressure is lost or the control valve is centered. The adjustable cushions only decelerate the piston near the stroke ends; they do not act as a brake. If your machinery requires fail-safe load holding without live pressure, consider the SAIL variant with an air-released lock, or the BSAI clamp-lock version. For direct replacements, match the 50 mm bore, 125 mm stroke, G1/4 PT port, FTC trunnion mount, and the -S magnet requirement to any ISO 15552 standard cylinder.
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 SAI50X125SFTC FAQ
At 0.5 MPa, this 50 mm bore cylinder provides a push force of 982 N and a pull force of 825 N. At a maximum 1.0 MPa operating pressure, it delivers a theoretical push force of 1767 N.
Yes. The SAI50X125-S is dimensionally interchangeable per ISO 15552. You can drop it in as a replacement for other ISO 15552 profile cylinders by matching the 50 mm bore, 125 mm stroke, and FTC mounting interface.
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