Airtac SAI40 Standard Air Cylinder SAI40BX25S
The AirTAC SAI40 Standard Air Cylinder SAI40BX25S 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 SAI40BX25S
The AirTAC SAI40X25-S is a double-acting ISO 15552 profile cylinder engineered for compact actuation, delivering 628N of push force and 528N of pull force at 0.5 MPa. Its 25mm stroke makes it highly effective for short-travel clamping and indexing tasks where space is restricted.
This specific configuration features a SUS304 stainless steel piston rod (option B) for superior corrosion resistance in washdown or chemically exposed environments. It includes a standard magnet (-S) that interfaces directly with CMSE and DMSE sensor switches housed in the dual-side extruded barrel grooves.
Airtac SAI40 Standard Air Cylinder SAI40BX25S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX25S |
|---|---|
| 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 SAI40BX25S
| 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 SAI40BX25S Is Used
Short-Stroke Clamping
Ideal for securing lightweight machined components during drilling or milling, utilizing its 628N push force within a tight 25mm travel limit.
Package Diverting
Provides rapid actuation for conveyor lane diverters where the SUS304 rod offers excellent resistance against ambient humidity and wear.
Sensor-Driven Gating
The integrated magnet allows precise position feedback via CMSE switches, perfect for synchronizing pneumatic gating mechanisms in automated assembly lines.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX25S the Right Cylinder?
Select this 40mm bore when a 32mm bore (402N push at 0.5 MPa) lacks the necessary thrust, but a 50mm bore (982N push at 0.5 MPa) would be physically oversized for your fixture. Because the stroke is only 25mm, side-load stress on the rod bearing is minimal, meaning no external guide is strictly necessary for standard loads.
For any drop-load or vertical application, remember that the adjustable air cushions only decelerate the piston at stroke end and do not function as a mechanical brake. If pressure is lost, the rod will drift; utilize the SAIL locking variant or an external pilot-operated check valve for fail-safe position holding. This unit is dimensionally interchangeable per ISO 15552, featuring a PT G1/4 port, and mounts via standard 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 SAI40BX25S FAQ
At an operating pressure of 0.5 MPa, this 40mm bore cylinder provides a push force of 628N and a pull force of 528N. If operated at 0.7 MPa, the push force increases to 879N.
Yes, the SAI series is a genuine ISO 15552 profile cylinder, making its mounting dimensions a direct replacement for other ISO 15552 standard cylinders. It utilizes a PT G1/4 port and standard mounting interfaces.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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