Airtac SAI63 Standard Cylinder SAI63X50S
The AirTAC Airtac SAI63 Standard Cylinder SAI63X50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 50mm 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
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63X50S
The AirTAC SAI63X50-S is a double-acting ISO 15552 profile cylinder engineered for compact, high-force automation. It delivers a robust 1559 N push force at 0.5 MPa, making this 50 mm stroke variant ideal for short-cycle clamping and heavy pressing tasks. The extruded aluminum barrel omits tie rods to maximize structural stability.
Equipped with a magnetic piston (-S), this unit supports direct mounting of CMSE or DMSE reed switches along the dual sensor grooves machined into both sides of the barrel. The standard carbon steel piston rod ensures high tensile strength for rigorous industrial environments.
Airtac SAI63 Standard Cylinder SAI63X50S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63X50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 50 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 SAI63X50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×50 | 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 SAI63X50S Is Used
Heavy-Duty Clamping
Generates 1559 N of push force at 0.5 MPa to securely hold heavy metal castings during CNC machining operations.
Short-Stroke Pressing
Ideal for inserting bearings or pins into housings where a 50 mm stroke provides rapid, high-impact actuation.
Parts Ejection
Uses the magnetic piston and CMSE sensors to confirm ejection position, rapidly pushing finished parts out of a forming die.
Is the Airtac SAI63 Standard Cylinder SAI63X50S the Right Cylinder?
Select this 63 mm bore when a 50 mm bore (providing 982 N at 0.5 MPa) lacks the necessary thrust for your tooling. The 50 mm stroke keeps the retracted length minimal, which is optimal for tight machine cells. Because this is a double-acting cylinder, it relies entirely on continuous air pressure to move and maintain its load; if your process requires the piston to resist drifting when air is exhausted, consider the SAIL variant with an integrated air-released lock.
As a true ISO 15552 standard cylinder, this model serves as a drop-in replacement for any matching ISO 15552 profile cylinder. It features a G3/8 port, PT threaded connections, and can be paired with FA or FB flange accessories to match your existing mounting footprint.
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 SAI63X50S FAQ
At a standard operating pressure of 0.5 MPa, this 63 mm bore cylinder produces 1559 N of push force and 1402 N of pull force. It can reach up to 2182 N push force at 0.7 MPa.
Yes, the SAI63X50-S is dimensionally interchangeable per ISO 15552. You can use it as a drop-in replacement for other ISO 15552 profile cylinders with a 63 mm bore and 50 mm stroke, matching the G3/8 port and mounting dimensions.
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