Airtac SAI63 Standard Cylinder SAI63BX185
The AirTAC Airtac SAI63 Standard Cylinder SAI63BX185 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ63 mm
- Stroke185 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 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 SAI63 Standard Cylinder SAI63BX185
The AirTAC SAI63X185 is a double-acting ISO 15552 profile cylinder engineered to deliver 1559 N of push force at 0.5 MPa. Its 185 mm stroke provides the exact mid-range extension needed for automated clamping and positioning tasks without excessive overhang.
This unit is configured with a SUS304 stainless steel piston rod (option B) for superior corrosion resistance in washdown or humid settings. It uses PT tapered port threads, and because it lacks a standard magnet, it relies on external positioning sensors rather than integrated CMSE or DMSE switches.
Airtac SAI63 Standard Cylinder SAI63BX185 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63BX185 |
|---|---|
| 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 SAI63BX185
| 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 SAI63BX185 Is Used
Automated Clamping
Provides 1559 N of clamping force at 0.5 MPa, ideal for securing heavy metal castings during CNC machining operations.
Package Diverting
Uses the 185 mm stroke to push heavy cartons off a main conveyor belt line into secondary packing lanes.
Press Operations
Drives small assembly presses where the SUS304 rod prevents corrosion from cooling fluids and ambient humidity.
Is the Airtac SAI63 Standard Cylinder SAI63BX185 the Right Cylinder?
Selecting this 63 mm bore over the smaller 50 mm variant significantly increases thrust, stepping up from 982 N to 1559 N at 0.5 MPa. If your application requires even greater power, the 80 mm bore offers 2513 N under the same pressure. Because this 185 mm stroke is under the 300 mm threshold, standard rod bearing wear is minimal, though external guides should still support any heavy lateral loads.
As a true ISO 15552 profile cylinder, it serves as a direct replacement for any standard cylinder matching these mounting dimensions. To replicate this exact configuration, specify a 63 mm bore, 185 mm stroke, PT G3/8 port, and your desired mounting accessory like an FA flange or TC trunnion. Note that a standard SAI will drift if air pressure is lost; use the SAIL variant if the system requires mechanical load holding.
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 SAI63BX185 FAQ
At an operating pressure of 0.5 MPa, this 63 mm bore cylinder generates a push force of 1559 N and a pull force of 1402 N. At 0.7 MPa, the push force increases to 2182 N.
Yes. The SAI63X185 is built to the ISO 15552 standard, making its mounting interface dimensionally interchangeable with other ISO 15552 profile cylinders of the same bore size.
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