Airtac SAI63 Standard Cylinder SAI63X70S
The AirTAC Airtac SAI63 Standard Cylinder SAI63X70S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 70mm 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
- Stroke70 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63X70S
The AirTAC SAI63X70-S is a double-acting ISO 15552 profile cylinder offering 1559 N of push force at 0.5 MPa. Its 70 mm stroke provides fast, precise linear movement for mid-range automation tasks. The extruded aluminum barrel design ensures rigid performance without the bulk of external tie rods.
This specific configuration includes a standard carbon steel piston rod and a magnetic piston (-S), allowing direct mounting of CMSE or DMSE reed switches. The barrel features sensor grooves on both sides for flexible switch placement. Seals are standard TPU, and ports feature PT tapered threads.
Airtac SAI63 Standard Cylinder SAI63X70S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63X70S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 70 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 SAI63X70S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×70 | 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 SAI63X70S Is Used
Component Clamping
Applies 1559 N of clamping force at 0.5 MPa to hold medium-sized metal parts securely during milling or drilling operations.
Package Diverting
Uses the 70 mm stroke to extend a diverter arm rapidly, redirecting boxes on a high-speed packaging conveyor line.
Gate Actuation
Operates safety guard doors and access hatches on automated machinery, benefiting from the rigid profile barrel construction.
Is the Airtac SAI63 Standard Cylinder SAI63X70S the Right Cylinder?
This 63 mm bore generates 1559 N at 0.5 MPa, sitting comfortably between the 982 N of a 50 mm bore and the 2513 N of an 80 mm bore. Choose this size when your application requires moderate force with a compact footprint. The 70 mm stroke is short enough to minimize rod-bearing side-load issues, making it highly durable for repetitive cycling.
Because it is a true ISO 15552 profile cylinder, it serves as a drop-in replacement for any standard ISO 15552 unit. Note that while the adjustable air cushions decelerate the piston at stroke ends, this cylinder will not hold a load if air pressure is lost; use the SAIL variant for pneumatic locking requirements.
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 SAI63X70S FAQ
At 0.5 MPa, the 63 mm bore produces 1559 N of push force and 1402 N of pull force. If operating pressure is increased to 0.7 MPa, the push force reaches 2182 N.
Yes. The SAI63X70-S is built to the ISO 15552 dimensional standard, making it dimensionally interchangeable with other ISO 15552 profile cylinders of the same bore size.
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