Airtac SAI50 Standard Cylinder SAI50BX90S
The AirTAC SAI50 Standard Cylinder SAI50BX90S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 90mm 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
- Stroke90 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 SAI50BX90S
The AirTAC SAI50X90-S is a double-acting ISO 15552 profile cylinder featuring a 50mm bore and a 90mm stroke. It delivers a robust push force of 982 N at 0.5 MPa, making it well-suited for medium-duty handling and clamping operations. The extruded aluminum barrel design omits traditional tie rods while maintaining strict dimensional interchangeability with other ISO 15552 actuators.
This specific configuration includes a SUS304 stainless steel piston rod (option B) for superior corrosion resistance in humid or washdown settings. Equipped with a magnet (-S), the barrel features dual-side sensor grooves designed for CMSE and DMSE switches, enabling precise end-of-stroke detection. The standard TPU seals handle temperatures from -20 to +70 C, while adjustable air cushions at both ends ensure smooth deceleration.
Airtac SAI50 Standard Cylinder SAI50BX90S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50BX90S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 90 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 SAI50BX90S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×90 | 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 SAI50BX90S Is Used
Mid-Range Clamping
Provides 982 N of push force at 0.5 MPa, ideal for securing moderate-weight metal or composite parts during machining and assembly processes.
Package Diverting
The 90mm stroke offers rapid, precise movement for indexing or diverting packages along high-speed material handling lines.
Component Pressing
Exerts reliable downward pressure for pressing bearings, pins, or small bushings into housings without requiring a full hydraulic system.
Is the Airtac SAI50 Standard Cylinder SAI50BX90S the Right Cylinder?
Selecting this 50mm bore over the smaller 40mm variant increases your push force at 0.5 MPa from 628 N to 982 N, providing a substantial lift for heavier fixtures. Conversely, stepping up to the 63mm bore yields 1559 N if your application demands even greater thrust. The 90mm stroke falls well below the 1200mm maximum standard stroke, so no side-load concerns are present here.
Because this is a double-acting cylinder, air pressure is required to move the rod in both directions. If your fixture loses air pressure or the valve is centered, the piston will drift and cannot hold a load vertically. For position-holding requirements without live pressure, consider the SAIL variant with an air-released lock or the BSAI clamp-lock cylinder. This SAI50X90-S uses a PT tapered G1/4 port and pairs with FA/FB flanges or TC trunnion mounts for ISO 15552 direct replacement.
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 SAI50BX90S FAQ
At 0.5 MPa, this 50mm bore cylinder generates 982 N of push force and 825 N of pull force. If you increase the operating pressure to 0.7 MPa, the push force rises to 1374 N.
Yes, the SAI50X90-S is dimensionally interchangeable per the ISO 15552 standard. You can drop it directly into existing mounting footprints like FA/FB flanges or TC trunnions without modifying the machine frame.
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