Airtac SAI50 Standard Cylinder SAI50BX85
The AirTAC Airtac SAI50 Standard Cylinder SAI50BX85 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 85mm 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
- Stroke85 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 SAI50BX85
The AirTAC SAI50X85 is a double-acting ISO 15552 profile cylinder offering a practical 85mm stroke. It generates 982N of push force and 825N of pull force at 0.5 MPa, making it a solid choice for medium-duty handling tasks. The extruded aluminum barrel design omits tie rods, providing a clean exterior.
This specific configuration features a SUS304 stainless steel piston rod (option B) for superior corrosion resistance in wet or washdown environments. It uses PT tapered port threads and lacks a magnet, meaning it is optimized purely for actuation rather than position sensing.
Airtac SAI50 Standard Cylinder SAI50BX85 Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50BX85 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 85 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 SAI50BX85
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×85 | 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 SAI50BX85 Is Used
Packaging Line Diverter
The 85mm stroke pushes packages laterally across a packaging conveyor, utilizing the 982N push force to move heavy cardboard cartons smoothly.
Press Ejection
Ejects lightweight stamped parts from a press bed, where the SUS304 stainless steel rod prevents corrosion from cutting fluids and ambient moisture.
Pallet Stop Gate
Acts as a pneumatic stop gate for incoming pallets on a roller conveyor, absorbing the impact safely within its 825N pull force capacity.
Is the Airtac SAI50 Standard Cylinder SAI50BX85 the Right Cylinder?
Stepping up to the 63mm bore raises the 0.5 MPa push force to 1559N, while dropping to a 40mm bore lowers it to 628N. Choose this 50mm option when your application requires roughly 100kg of linear thrust. Because this is a double-acting actuator, it will not hold a load if air pressure drops; use the SAIL variant if a pneumatic lock is required for safety.
As a true ISO 15552 profile cylinder, it serves as a direct replacement for any standard 50mm bore, 85mm stroke cylinder with a G1/4 port. You can pair it with FA or FB flange accessories, and add an -S magnet version if you later need CMSE or DMSE sensor switches.
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 SAI50BX85 FAQ
The SAI50X85 generates a push force of 982N and a pull force of 825N when operated at 0.5 MPa.
Yes, the SAI50X85 is dimensionally interchangeable per ISO 15552, meaning it serves as a direct replacement for any standard 50mm bore ISO 15552 profile cylinder with a G1/4 port.
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