Airtac SAI50 Standard Cylinder SAI50X400S
The AirTAC SAI50 Standard Cylinder SAI50X400S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 400mm 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
- Stroke400 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 SAI50X400S
The AirTAC SAI50X400-S is a double-acting ISO 15552 profile cylinder featuring a 50mm bore and a 400mm stroke. It generates a push force of 982 N at 0.5 MPa, making it well-suited for medium-duty handling and positioning tasks. The extruded aluminum barrel is tie-rod-less, providing a clean exterior while maintaining strict dimensional interchangeability with other ISO 15552 standards.
This specific configuration includes a magnet for position sensing, allowing seamless integration with CMSE or DMSE reed switches along the dual sensor grooves. The piston rod is constructed from standard carbon steel, and the PT tapered port threads ensure a robust, leak-free pneumatic connection.
Airtac SAI50 Standard Cylinder SAI50X400S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50X400S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 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 SAI50X400S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×400 | 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 SAI50X400S Is Used
Material Transfer
Ideal for pushing or lifting medium-weight workpieces along a 400mm travel distance on automated conveyor lines.
Assembly Pressing
Delivers 982 N of thrust at 0.5 MPa for pressing small bearings or pins into housings without requiring high-pressure hydraulics.
Pallet Diversion
Provides the stroke length and force needed to actuate diverter arms or sorting gates in high-throughput logistics hubs.
Is the Airtac SAI50 Standard Cylinder SAI50X400S the Right Cylinder?
Stepping the bore down to 40mm reduces the push force to 628 N at 0.5 MPa, whereas moving up to a 63mm bore increases it to 1559 N, so the 50mm bore is the optimal middle ground for loads requiring roughly 1000 N of thrust. At 400mm of stroke, the extended rod is highly susceptible to bending under side loads; utilizing an external guide rail or a guided cylinder package is strongly recommended to prevent premature rod-bearing wear.
Because this is a standard double-acting cylinder, it relies entirely on live air pressure to hold its position. If your application requires the load to remain fixed during a pressure drop or valve centering, consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock. For direct replacements, match the 50mm bore, 400mm stroke, G1/4 PT port, and appropriate mounting accessories like FA flanges or TC trunnions.
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 SAI50X400S FAQ
At 0.5 MPa, this 50mm bore cylinder provides a push force of 982 N and a pull force of 825 N. If operating at 0.7 MPa, the push force increases to 1374 N.
Yes, the SAI50X400-S is dimensionally interchangeable per ISO 15552. You can use it as a direct replacement for other ISO 15552 profile cylinders by matching the 50mm bore, 400mm stroke, and G1/4 port.
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