Airtac SAI63 Standard Cylinder SAI63AX280
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX280 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 280mm 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
- Stroke280 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX280
The AirTAC SAI63X280 is a double-acting ISO 15552 profile cylinder engineered to deliver a push force of 1559 N and a pull force of 1402 N at 0.5 MPa. Its 280 mm stroke provides the extended travel needed for mid-range automation tasks. Built with an extruded aluminum barrel, this tie-rod-less design ensures rigid performance while reducing overall weight.
This specific configuration utilizes a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance in humid environments. It features PT tapered port threads and lacks a standard magnet, meaning position sensing via CMSE or DMSE switches is not supported unless customized. The variable air cushions at both ends are adjustable to safely decelerate moving loads.
Airtac SAI63 Standard Cylinder SAI63AX280 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX280 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 280 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 SAI63AX280
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×280 | 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 SAI63AX280 Is Used
Automated Clamping
Provides 1559 N of clamping force at 0.5 MPa to secure heavy metal workpieces during CNC machining operations.
Product Diverting
Extends 280 mm to push heavy pallets or packaged goods off a main conveyor line into secondary packaging zones.
Press Operations
Drives small pneumatic presses for assembling bearings or pins, utilizing its 1402 N pull force for safe retraction.
Is the Airtac SAI63 Standard Cylinder SAI63AX280 the Right Cylinder?
Selecting this 63 mm bore over the smaller 50 mm variant doubles your 0.5 MPa thrust from 982 N to 1559 N, making it suitable for heavier actuation. If your application requires less force, stepping down to the 40 mm bore yields 628 N. For this 280 mm stroke, the unsupported rod length is moderate, but mounting accessories like the FA flange or LB foot bracket should be paired with external guides if side loads are present.
Because this is a standard double-acting cylinder, it does not hold position or carry loads when air pressure is removed; the piston will drift. For dead-end holding requirements, consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock. As a true ISO 15552 cylinder, it serves as a drop-in replacement for any standard 63 mm bore, 280 mm stroke profile cylinder with G3/8 ports.
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 SAI63AX280 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 SAI63X280 is dimensionally interchangeable per ISO 15552. It shares standard mounting interfaces, G3/8 PT ports, and a 280 mm stroke, allowing it to serve as a direct drop-in replacement for other ISO 15552 profile cylinders.
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