Airtac SAI40 Standard Air Cylinder SAI40BX25
The AirTAC SAI40 Standard Air Cylinder SAI40BX25 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 25mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke25 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 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 SAI40 Standard Air Cylinder SAI40BX25
The AirTAC SAI40X25 is a double-acting ISO 15552 profile cylinder featuring a 40mm bore and a 25mm stroke. It delivers 628N of push force and 528N of pull force at 0.5 MPa, making it a robust choice for short linear actuation. The extruded aluminum barrel design omits tie rods, providing a clean exterior that is dimensionally interchangeable per ISO 15552 standards.
This specific configuration includes a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in demanding environments. Fluid supply is routed through PT tapered thread ports sized G1/4. Because no magnet is specified, this unit does not include sensor grooves for position detection.
Airtac SAI40 Standard Air Cylinder SAI40BX25 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX25 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAI40 Standard Air Cylinder SAI40BX25
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | 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 SAI40 Standard Air Cylinder SAI40BX25 Is Used
Short-Stroke Clamping
Ideal for securely holding lightweight metal or composite components during machining and assembly operations.
Package Diverting
Provides rapid, short linear push-offs to sort or redirect small packages on a high-speed manufacturing line.
Valve Actuation
Delivers precise mechanical force to open and close small process valves in localized fluid control systems.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX25 the Right Cylinder?
For applications requiring less force, the SAI32 bore offers 402N at 0.5 MPa, while stepping up to the SAI50 provides 982N for heavier payloads. At a 25mm stroke, side-load stress on the rod bearing is minimal, making this size ideal for high-cycle clamping or short ejection tasks.
Since this is a standard double-acting cylinder, it will not hold a load if air pressure is lost or the valve is centered; the piston will drift. If your workflow demands fail-safe load holding without live pressure, consider the SAIL variant with an air-released lock or an external pilot-operated check valve. To replace an existing unit, match the 40mm bore, 25mm stroke, G1/4 PT port, and your required mounting accessories like FA flanges or LB foot brackets.
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 SAI40 Standard Air Cylinder SAI40BX25 FAQ
At 0.5 MPa operating pressure, this 40mm bore cylinder generates a push force of 628N and a pull force of 528N. At 0.7 MPa, the push force increases to 879N.
Yes, the SAI40X25 is dimensionally interchangeable with other ISO 15552 profile cylinders. Ensure you match the 40mm bore, 25mm stroke, G1/4 port, and mounting interface for a direct replacement.
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Standard models are processed and dispatched in 3-5 business days.
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