Airtac SAI63 Standard Cylinder SAI63BX25S
The AirTAC Airtac SAI63 Standard Cylinder SAI63BX25S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 25mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ63 mm
- Stroke25 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAI63 Standard Cylinder SAI63BX25S
The AirTAC SAI63X25-S is a double-acting ISO 15552 profile cylinder engineered for short-stroke actuation. It provides a push force of 1559 N at 0.5 MPa, making it highly effective for compact, high-impact positioning tasks. The 25 mm stroke ensures rapid cycling without occupying excessive machine footprint.
This specific configuration includes a -S magnet for direct mounting of CMSE or DMSE sensor switches along the integrated dual-side barrel grooves. Furthermore, it is built with a SUS304 stainless steel rod (option B), offering superior corrosion resistance for harsh or washdown manufacturing environments.
Airtac SAI63 Standard Cylinder SAI63BX25S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63BX25S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 25 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 SAI63BX25S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×25 | 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 SAI63BX25S Is Used
Short-Stroke Clamping
Ideal for holding heavy metal castings securely in place during CNC machining operations, utilizing its 1559 N push force within a minimal 25 mm travel distance.
Package Diverting
Provides rapid, high-thrust actuation for sorting heavy goods or redirecting pallets on automated conveyor lines where space is tightly constrained.
Pressing & Spot Welding
Delivers consistent downward pressure for small-component assembly tasks or electrode alignment in robotic spot welding cells.
Is the Airtac SAI63 Standard Cylinder SAI63BX25S the Right Cylinder?
Selecting this 63 mm bore model is optimal when a 50 mm bore (982 N at 0.5 MPa) lacks the necessary thrust, but a larger 80 mm bore (2513 N at 0.5 MPa) would be physically oversized. For this 25 mm stroke, side-load bending is minimal, but external guides are still recommended if absorbing heavy lateral impact loads. As a double-acting cylinder, it relies on continuous air pressure to maintain its position; if the pneumatic supply drops, the piston will drift. For fail-safe load holding without live pressure, consider the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variants. To guarantee a seamless direct replacement, verify the 63 mm bore, 25 mm stroke, G3/8 PT port, and required mounting accessories (such as an LB foot or TC trunnion).
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 SAI63BX25S FAQ
At a standard 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 SAI63X25-S is dimensionally interchangeable per ISO 15552 standards. Ensure your existing setup matches the 63 mm bore, 25 mm stroke, G3/8 port, and your specific mounting accessory requirements for a direct replacement.
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