Airtac SAI40 Standard Air Cylinder SAI40BX140
The AirTAC SAI40 Standard Air Cylinder SAI40BX140 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 SAI40BX140
The AirTAC SAI40X140 is a double-acting ISO 15552 profile cylinder engineered to deliver 628 N of push force and 528 N of pull force at 0.5 MPa. The 140 mm stroke makes it highly suitable for mid-length indexing and clamping tasks on automated lines. By utilizing an extruded aluminum barrel, this unit eliminates protruding tie rods, presenting a smooth exterior that resists snagging in tight machinery spaces.
This specific configuration features a SUS304 stainless steel piston rod (material code B), providing superior corrosion resistance for environments exposed to moisture or washdowns. The pneumatic supply connects via a PT (tapered) G1/4 port, and the extruded barrel includes integrated sensor grooves on both sides, allowing you to mount CMSE or DMSE switches if a magnet is added later.
Airtac SAI40 Standard Air Cylinder SAI40BX140 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX140 |
|---|---|
| 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 SAI40BX140
| 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 SAI40BX140 Is Used
Component Clamping
Provides 628 N of clamping force at 0.5 MPa to secure medium-duty machined parts during milling or drilling operations.
Package Diverter
Utilizes the 140 mm stroke to push cartons cleanly from a main conveyor belt to a secondary packaging line.
Gate Control
Actuates lightweight access gates on automated cells, where the SUS304 rod ensures reliable operation despite ambient humidity.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX140 the Right Cylinder?
Selecting this 40 mm bore is optimal when a 32 mm bore (402 N push at 0.5 MPa) would be underpowered, but a 50 mm bore (982 N push) would introduce unnecessary bulk and air consumption. The 140 mm stroke offers 15 mm of additional travel over the standard 125 mm option, giving designers a slight buffer for mechanism clearance. Because the stroke is under 300 mm, the standard rod bearing handles typical side loads adequately without requiring an external guide.
For ISO 15552 direct replacements, match the 40 mm bore, 140 mm stroke, PT G1/4 port, and your required mounting accessory (such as an LB foot or FA flange). Note that a standard SAI cylinder relies on continuous air pressure to hold position; if power fails, the piston will drift. For fail-safe load holding, consider the SAIL (air-released lock) variant or an external rod lock.
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 SAI40BX140 FAQ
At an operating pressure of 0.5 MPa, the SAI40X140 generates 628 N of push force and 528 N of pull force. If pressure is increased to 0.7 MPa, the push force reaches 879 N.
Yes, the SAI40X140 is a genuine ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 cylinders. Ensure your mounting interface matches the 40 mm bore standard.
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