Airtac SAI50 Standard Cylinder SAI50BX185S
The AirTAC SAI50 Standard Cylinder SAI50BX185S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 185mm 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
- Stroke185 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 SAI50BX185S
The AirTAC SAI50X185-S is a double-acting ISO 15552 profile cylinder engineered to deliver 982 N of push force at 0.5 MPa. Its 185 mm stroke is well-suited for mid-range linear actuation tasks requiring reliable throughput. As a standardized profile barrel design, it provides a direct replacement for other ISO 15552 cylinders without requiring custom mounting plates.
This specific configuration includes a SUS304 stainless steel rod for superior corrosion resistance in humid or washdown environments. It is equipped with a magnet for position sensing via CMSE or DMSE switches fitted into the dual sensor grooves on the extruded aluminum barrel. Fluid ports feature PT tapered threads for secure, leak-free pneumatic connections.
Airtac SAI50 Standard Cylinder SAI50BX185S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50BX185S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 185 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 SAI50BX185S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×185 | 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 SAI50BX185S Is Used
Packaging Equipment
Ideal for driving sealing jaws and folding mechanisms on automated packaging lines where the 982 N force and 185 mm stroke handle cardboard and film reliably.
Material Diverting
Provides robust actuation for diverter arms on conveyor systems, using the integrated magnet and DMSE sensors to confirm stroke endpoints in logistics sorting.
Assembly Pressing
Suitable for light-duty pressing and seating of bearings or pins, utilizing the SUS304 rod to withstand minor exposure to cutting fluids and moisture.
Is the Airtac SAI50 Standard Cylinder SAI50BX185S the Right Cylinder?
Select this 50 mm bore when an application requires stepping up from the 40 mm class, which provides 628 N at 0.5 MPa, but does not need the heavier 1559 N output of the 63 mm version. The 185 mm stroke offers ample extension for packaging and material handling. Because the stroke is under 300 mm, standard rod bearing bending is minimal, though external guides remain best practice for heavy off-center loads.
This model uses a G1/4 port and M16x1.5 rod thread. It functions as a dimensionally interchangeable ISO 15552 replacement, matching standard FA, FB, LB, and TC mounting accessory footprints. Note that a standard SAI cylinder relies on live air pressure to hold position; it does not feature an internal lock. If your application requires static holding without air pressure, consider the SAIL or BSAI locking variants.
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 SAI50BX185S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. If pressure is increased to 0.7 MPa, the push force reaches 1374 N.
Yes, the SAI50X185-S is a true ISO 15552 profile cylinder. Its mounting dimensions, G1/4 ports, and M16x1.5 rod thread are fully interchangeable with other ISO 15552 cylinders, allowing for a seamless direct replacement.
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Covers non-human-caused product damage.
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