Airtac SAI50 Standard Cylinder SAI50BX40
The AirTAC Airtac SAI50 Standard Cylinder SAI50BX40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 40mm 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.
- BoreØ50 mm
- Stroke40 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- 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 SAI50 Standard Cylinder SAI50BX40
The AirTAC SAI50X40 is a double-acting ISO 15552 profile cylinder featuring a 50mm bore and 40mm stroke. It delivers a push force of 982 N at 0.5 MPa, making it well-suited for short-travel clamping and positioning tasks. The extruded aluminum barrel design omits tie rods, providing a clean exterior that simplifies mounting and sensor placement.
This specific configuration features a SUS304 stainless steel piston rod (option B) for superior corrosion resistance in humid or washdown environments. It utilizes PT tapered port threads and lacks a standard magnet, though the barrel retains dual-side sensor grooves should you later need to add CMSE or DMSE switches.
Airtac SAI50 Standard Cylinder SAI50BX40 Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50BX40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| 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, 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAI50 Standard Cylinder SAI50BX40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×40 | 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 SAI50 Standard Cylinder SAI50BX40 Is Used
Short-Stroke Clamping
Provides reliable 982 N holding force for securing machined components during milling or drilling operations.
Package Diverter
Actuates a short diverter arm to redirect small to medium packages on a high-speed sorting line.
Gate Control
Pneumatically opens and closes small process gates in material handling and light manufacturing systems.
Is the Airtac SAI50 Standard Cylinder SAI50BX40 the Right Cylinder?
Choose this 50mm bore when a 40mm bore (628 N at 0.5 MPa) lacks the necessary thrust, but a 63mm bore (1559 N at 0.5 MPa) would be excessive. The short 40mm stroke is optimal for compact actuation where space is restricted. Because the standard SAI does not mechanically hold loads upon air pressure loss, use the SAIL variant or an external pilot-operated check valve if mid-stroke positioning must be maintained safely.
For a direct replacement, match the 50mm bore, 40mm stroke, G1/4 port, and your required mounting accessory (such as an FA flange or LB foot). To add proximity sensing, select the -S magnet option during configuration.
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 SAI50 Standard Cylinder SAI50BX40 FAQ
At 0.5 MPa operating pressure, the push force is 982 N and the pull force is 825 N. At 0.7 MPa, the push force increases to 1374 N.
Yes, the SAI50X40 is dimensionally interchangeable per ISO 15552. It serves as a direct replacement for other ISO 15552 profile cylinders, provided you match the 50mm bore, 40mm stroke, and G1/4 port.
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