Airtac SAI63 Standard Cylinder SAI63X250S
The AirTAC Airtac SAI63 Standard Cylinder SAI63X250S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 250mm 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
- Stroke250 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63X250S
The AirTAC SAI63X250-S is a double-acting ISO 15552 profile cylinder offering a push force of 1559 N and a pull force of 1402 N at 0.5 MPa. Its extruded aluminum barrel design omits tie rods for a clean exterior, while the 250 mm stroke provides ample extension for mid-range automation tasks.
This variant includes a built-in magnet (-S) for non-contact position detection, seamlessly pairing with CMSE or DMSE series reed switches along the dual sensor grooves. It features a standard carbon steel piston rod and utilizes a PT tapered port thread configuration for secure pneumatic connections.
Airtac SAI63 Standard Cylinder SAI63X250S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63X250S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 250 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 SAI63X250S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×250 | 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 SAI63X250S Is Used
Component Clamping
Provides reliable 1559 N clamping force at 0.5 MPa for securing medium-sized metal workpieces during machining operations.
Package Diverting
The 250 mm stroke and magnetic piston allow precise actuation and position feedback for routing larger cartons on sorting lines.
Material Ejection
Delivers robust push force to eject molded parts or stampings from heavy-duty presses, with adjustable cushions absorbing impact.
Is the Airtac SAI63 Standard Cylinder SAI63X250S the Right Cylinder?
This 63 mm bore strikes an excellent balance, delivering significantly more thrust than the 50 mm bore (982 N push at 0.5 MPa) without the bulk of an 80 mm body (2513 N push at 0.5 MPa). For this 250 mm stroke, standard ISO 15552 mounting accessories like FA flanges or TC trunnion brackets ensure rigid installation. The unit uses a G3/8 port and an M16x1.5 rod thread.
Because the stroke reaches 250 mm, designers should verify side-load conditions to prevent rod-bearing bending. Utilizing an external guide rail or a guided cylinder is recommended to absorb lateral forces. Note that a standard SAI cannot hold a load if air pressure drops; for fail-safe holding, consider the SAIL lock variant or an external pilot-operated check valve.
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 SAI63X250S FAQ
At 0.5 MPa operating pressure, 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 SAI63X250-S is dimensionally interchangeable per ISO 15552 standards. It matches standard mounting interfaces and port sizes, allowing direct replacement for equivalent profile cylinders.
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