Airtac SAI50 Standard Cylinder SAI50BX20S
The AirTAC SAI50 Standard Cylinder SAI50BX20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 20mm 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
- Stroke20 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 SAI50BX20S
The AirTAC SAI50X20-S is a double-acting ISO 15552 profile cylinder featuring a 50mm bore and a 20mm non-standard short stroke. It delivers a robust 982N push force and 825N pull force at 0.5 MPa, making it ideal for high-impact clamping or short-travel ejection tasks. The extruded aluminum barrel design eliminates tie-rods, providing a clean exterior that drops directly into standard ISO 15552 mounting interfaces.
This specific configuration includes a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in harsh or washdown environments. It is equipped with a magnet (-S) for seamless integration with CMSE and DMSE series sensor switches, which mount directly into the dual sensor grooves on the barrel. The fluid port features a PT tapered thread, and the adjustable air cushions at both ends ensure smooth deceleration even at operating speeds up to 800 mm/s.
Airtac SAI50 Standard Cylinder SAI50BX20S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50BX20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 20 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 SAI50BX20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×20 | 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 SAI50BX20S Is Used
Short-Stroke Clamping
Ideal for holding metal or plastic workpieces securely in machining fixtures using its 982N push force and minimal 20mm travel distance.
Washdown Ejection
The SUS304 stainless steel rod provides excellent corrosion resistance for ejecting packaged goods in food or chemical processing lines.
Sensor-Driven Sorting
Integrated magnet for CMSE/DMSE switches allows precise position detection at high cycling speeds up to 800 mm/s on conveyor diverter gates.
Is the Airtac SAI50 Standard Cylinder SAI50BX20S the Right Cylinder?
Select this 50mm bore model when an application demands 982N of push force at 0.5 MPa within a very compact footprint. If your project requires even higher thrust, stepping up to the 63mm bore yields 1559N at the same pressure, while dropping to a 40mm bore reduces the output to 628N. The 20mm stroke is a made-to-order dimension, offering precise short-travel movement where standard strokes are too long.
Because the standard SAI does not hold position when air pressure is lost, applications requiring dead-stop braking or drop prevention must integrate an external pilot-operated check valve or select the SAIL (air-released lock) variant. For this specific 50mm bore and 20mm stroke combination, the mounting interface utilizes a PT G1/4 port, and standard ISO 15552 accessories such as LB foot brackets or FA flanges can be used to match your frame.
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 SAI50BX20S FAQ
Operating at 0.5 MPa, this 50mm bore cylinder generates 982N of push force and 825N of pull force. If you increase the operating pressure to 0.7 MPa, the push force rises to 1374N.
Yes. The SAI50X20-S is a true ISO 15552 profile cylinder, making it dimensionally interchangeable with other standard ISO 15552 cylinders. You can use your existing mounting accessories and drop it directly into the same footprint.
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