Airtac SAI63 Standard Cylinder SAI63AX155
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX155 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 155mm 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
- Stroke155 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX155
The AirTAC SAI63X155 is a double-acting ISO 15552 profile cylinder engineered to deliver 1559 N of push force at 0.5 MPa. Its 155 mm stroke provides the exact mid-range extension needed for clamping, lifting, and indexing tasks where a standard 150 mm or 175 mm travel would be less precise.
Configured with a SUS420J2 stainless steel piston rod (material code A), this unit offers superior corrosion resistance compared to standard carbon steel, making it highly suitable for environments with elevated moisture or washdown requirements. It features PT tapered port threads and lacks a standard magnet, meaning external position sensing is not supported out of the box.
Airtac SAI63 Standard Cylinder SAI63AX155 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX155 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 155 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 SAI63AX155
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×155 | 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 SAI63AX155 Is Used
Component Clamping
Provides 1559 N of secure clamping force at 0.5 MPa, holding workpieces firmly during machining or welding operations.
Product Diverting
The 155 mm stroke offers precise linear movement for indexing packages or products between conveyor lanes without overshooting.
Stainless Rod Actuation
The SUS420J2 rod material resists corrosion, making it ideal for food processing or packaging machinery exposed to frequent washdowns.
Is the Airtac SAI63 Standard Cylinder SAI63AX155 the Right Cylinder?
If your application requires slightly less push power, stepping down to a 50 mm bore yields 982 N at 0.5 MPa, while moving up to an 80 mm bore provides 2513 N for heavier payloads. Because this cylinder lacks a magnet, you cannot mount reed or solid-state sensors directly to the barrel; if your sequence control requires end-of-stroke feedback, select an SAI63X155-S variant instead. Remember that a standard SAI cylinder will drift and drop its load if air pressure is lost; for fail-safe holding, consider the SAIL variant with an air-released lock or a BSAI clamp-lock cylinder. As a true ISO 15552 profile cylinder, it serves as a dimensionally interchangeable drop-in replacement matching the 63 mm bore, 155 mm stroke, PT G3/8 port, and standard 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 SAI63AX155 FAQ
At an operating pressure of 0.5 MPa, the SAI63X155 generates a push force of 1559 N. If you increase the pressure to 0.7 MPa, the push force rises to 2182 N.
Yes, the SAI63X155 is a genuine ISO 15552 profile cylinder, meaning its mounting dimensions, 63 mm bore, and G3/8 PT ports are fully interchangeable with other ISO 15552 standard cylinders.
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