Airtac SAI50 Standard Cylinder SAI50X650S
The AirTAC Airtac SAI50 Standard Cylinder SAI50X650S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 650mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke650 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
About the Airtac SAI50 Standard Cylinder SAI50X650S
The AirTAC SAI50X650-S is a double-acting ISO 15552 profile cylinder engineered to deliver a robust 982N push force at 0.5 MPa. Its 650mm extended stroke is tailored for automated machinery requiring substantial linear reach. The extruded aluminum barrel omits traditional tie rods, presenting a clean exterior that matches standardized ISO 15552 mounting dimensions for seamless interchangeability.
This specific configuration includes a magnet for proximity sensing, allowing direct integration with CMSE and DMSE sensor switches along the dual side grooves. The piston rod is constructed from standard carbon steel, and the body features PT tapered port threading. For elevated thermal environments, the TPU standard seals can be swapped for Viton high-temperature variants.
Airtac SAI50 Standard Cylinder SAI50X650S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50X650S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 650 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 SAI50X650S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×650 | 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 SAI50X650S Is Used
Material Transfer Gates
Actuates long-throw diverter arms on packaging lines, using the 650mm stroke to fully clear the conveyor lane for product routing changes.
Long-Reach Part Ejection
Pushes finished molded parts out of large CNC machinery enclosures, relying on the 982N force at 0.5 MPa to overcome ejection resistance.
Vertical Lift Stations
Drives elevated pallet stops in automated storage systems, where the integrated magnet triggers CMSE sensors to confirm upper and lower positions.
Is the Airtac SAI50 Standard Cylinder SAI50X650S the Right Cylinder?
If an application requires less push energy, stepping down to the 40mm bore drops the 0.5 MPa output to 628N, whereas moving up to the 63mm bore increases it to 1559N. Because this 650mm stroke produces a long unsupported rod extension, side-load bending is a primary concern. Mounting external guides or utilizing a fully guided cylinder is strongly recommended to prevent rod-bearing damage and premature wear.
This 50mm bore cylinder uses a G1/4 port and operates efficiently between 30-800 mm/s. While the adjustable air cushions at both ends decelerate the piston near stroke limits, they do not lock the rod. If the machinery loses air pressure, the load will drift; utilize the SAIL variant with an air-released lock or a BSAI clamp-lock for secure position 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 SAI50X650S FAQ
At an operating pressure of 0.5 MPa, the SAI50X650-S generates a push force of 982N and a pull force of 825N. If the pressure is increased to 0.7 MPa, the push force rises to 1374N.
Yes, the SAI50X650-S is dimensionally interchangeable per ISO 15552. Its standardized mounting interface and profile barrel allow it to serve as a drop-in replacement for other ISO 15552 cylinders, utilizing standard FA flange or LB foot brackets.
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