Airtac SAI40 Standard Air Cylinder SAI40BX140S
The AirTAC SAI40 Standard Air Cylinder SAI40BX140S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 140mm 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
- Stroke140 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 SAI40BX140S
The AirTAC SAI40X140-S is a double-acting ISO 15552 profile cylinder offering 628 N of push force at 0.5 MPa and 879 N at 0.7 MPa. Its 140 mm stroke is well-suited for mid-range linear actuation tasks requiring reliable mid-force transfer. The extruded aluminum barrel design omits tie rods, providing a clean exterior that resists mechanical fouling in tight machinery spaces.
This specific configuration incorporates a SUS304 stainless steel rod (material code B) for superior corrosion resistance in humid or washdown environments. It includes a piston magnet (-S) for position sensing using CMSE or DMSE switches, which seat cleanly into the sensor grooves machined on both sides of the barrel. Fluid ports are PT tapered threads.
Airtac SAI40 Standard Air Cylinder SAI40BX140S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX140S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 140 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 SAI40BX140S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×140 | 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 SAI40BX140S Is Used
Component Clamping
Holds machined parts firmly against a fixture with 879 N of force at 0.7 MPa during milling or drilling operations.
Package Diverter
Actuates a routing gate on a packaging line, using the 140 mm stroke to redirect boxes efficiently at operating speeds.
Gate Control
Opens and closes access doors on automated equipment, benefiting from the SUS304 rod's resistance to factory humidity.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX140S the Right Cylinder?
If your application requires less force, stepping down to a 32 mm bore yields 563 N at 0.7 MPa, while stepping up to a 50 mm bore provides 1374 N at 0.7 MPa. At 140 mm of stroke, side-load risks are moderate, but using an external guide rail is recommended if the load is heavy or off-center. For direct replacements, match the 40 mm bore, 140 mm stroke, G1/4 port, and mounting accessory (like an FA flange or LB foot), and ensure the -S magnet is included if your PLC relies on position feedback.
Note that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not lock the rod. If the air supply is dropped or exhausted, the piston will drift. For safety applications requiring dead-load holding without live pressure, specify the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variant instead of the standard SAI.
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 SAI40BX140S FAQ
This 40 mm bore cylinder generates 628 N of push force and 528 N of pull force at 0.5 MPa. At 0.7 MPa, the push force increases to 879 N.
Yes, the SAI40X140-S is dimensionally interchangeable per ISO 15552. You can drop it in by matching the 40 mm bore, 140 mm stroke, and G1/4 port dimensions to other ISO 15552 profile cylinders.
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