Airtac SAI63 Standard Cylinder SAI63AX185S
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX185S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 185mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ63 mm
- Stroke185 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX185S
The AirTAC SAI63X185-S is a double-acting ISO 15552 profile cylinder featuring a 63mm bore and a 185mm stroke. Because this specific stroke length is not part of the standard catalog increments, it is manufactured as a made-to-order non-standard stroke. It delivers a push force of 1559 N at 0.5 MPa and a pull force of 1402 N, making it well-suited for mid-range industrial actuation tasks.
This variant is equipped with a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. It also includes a built-in magnet (-S) for position sensing, allowing seamless integration with CMSE or DMSE reed switches mounted directly into the dual-side sensor grooves on the extruded aluminum barrel. The fluid porting utilizes PT tapered threads.
Airtac SAI63 Standard Cylinder SAI63AX185S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX185S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 185 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAI63 Standard Cylinder SAI63AX185S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | 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 SAI63 Standard Cylinder SAI63AX185S Is Used
Specialty Material Handling
Ideal for custom automated machinery requiring a specific 185mm reach to push or pull mid-weight components between processing stations.
Packaging Equipment
Provides the precise stroke length needed for forming, folding, or sealing operations where standard 175mm or 200mm strokes would misalign the packaging web.
Industrial Door Actuation
Delivers robust 1559 N force to actuate safety guards or heavy access panels, while the SUS420J2 rod withstands occasional washdowns and humid environments.
Is the Airtac SAI63 Standard Cylinder SAI63AX185S the Right Cylinder?
Selecting this 63mm bore makes sense when a 50mm bore (982 N push at 0.5 MPa) lacks sufficient thrust, but an 80mm bore (2513 N push at 0.5 MPa) would be physically oversized and unnecessarily heavy for your machine envelope. The 185mm stroke provides a specific extension range tailored to unique mechanical linkages. Operating speed ranges from 30-800 mm/s.
For applications requiring the load to be held securely in place during a complete loss of air pressure or when a valve is centered, a standard SAI cylinder will drift and drop its load. In those scenarios, you should specify the SAIL variant (with an air-released lock) or the BSAI bidirectional clamp-lock cylinder to prevent unintended movement. As a true ISO 15552 profile cylinder, this model is dimensionally interchangeable with other ISO 15552 cylinders of the same bore and stroke, utilizing standard PT G3/8 ports and compatible mounting accessories like FA flanges or TC trunnions.
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 SAI63 Standard Cylinder SAI63AX185S FAQ
At 0.5 MPa, this 63mm bore cylinder provides a push force of 1559 N and a pull force of 1402 N. If higher pressure is applied, the push force increases to 2182 N at 0.7 MPa.
Yes, the SAI series is a genuine ISO 15552 profile cylinder. Its standardized mounting dimensions, 63mm bore, and G3/8 porting make it dimensionally interchangeable with other ISO 15552 cylinders of the same size, allowing for a direct drop-in replacement.
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