Airtac SAI50 Standard Cylinder SAI50X20S
The AirTAC SAI50 Standard Cylinder SAI50X20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 20mm 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
- Stroke20 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 SAI50X20S
The AirTAC SAI50X20-S is a double-acting ISO 15552 profile cylinder engineered for compact, high-force actuation. Delivering a push force of 982 N at 0.5 MPa, this 50 mm bore unit is tailored for short 20 mm stroke applications requiring rapid, repeatable clamping or ejection. The extruded aluminum barrel design omits tie-rods, providing a clean exterior that simplifies mounting and sensor placement.
Equipped with a magnetic piston (-S), this model seamlessly integrates with CMSE and DMSE reed switches via the dual sensor grooves machined into both sides of the barrel. It features a standard carbon steel piston rod and utilizes PT tapered port threads (G1/4) for secure, leak-free pneumatic connections in demanding industrial environments.
Airtac SAI50 Standard Cylinder SAI50X20S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50X20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 20 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 SAI50X20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×20 | 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 SAI50X20S Is Used
Short-Stroke Clamping
Ideal for holding heavy metal workpieces during machining operations where a 982 N clamping force at 0.5 MPa is required over a brief 20 mm travel distance.
Part Ejection
Provides rapid and powerful ejection of finished components from automated machinery, utilizing the magnetic piston for precise end-of-stroke position confirmation.
Press Pinning
Delivers concentrated force for inserting pins or rivets into assemblies, taking advantage of the rigid carbon steel rod and compact 20 mm stroke.
Is the Airtac SAI50 Standard Cylinder SAI50X20S the Right Cylinder?
Select this 50 mm bore cylinder when a 32 mm bore (402 N at 0.5 MPa) lacks the necessary thrust for your short-stroke task, but a 63 mm bore (1559 N at 0.5 MPa) would be physically oversized. The 20 mm stroke is optimal for brief, high-impact motions. Because the stroke is well under 300 mm, side-load stress on the rod bearing is minimal, though external guides should still be used if absorbing heavy lateral impacts.
As a dimensionally interchangeable ISO 15552 cylinder, it serves as a direct replacement for other 50 mm bore, 20 mm stroke profile cylinders sharing the same mounting interface and G1/4 port size. For applications requiring the piston to maintain its position after a loss of air pressure, note that the standard SAI does not hold load; consider the SAIL (air-released lock) or BSAI (clamp-lock) variants instead.
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 SAI50X20S FAQ
At a standard operating pressure of 0.5 MPa, this 50 mm bore cylinder provides a push force of 982 N and a pull force of 825 N. At 0.7 MPa, the push force increases to 1374 N.
Yes, the SAI50X20-S is dimensionally interchangeable per ISO 15552. You can use it as a direct replacement for other ISO 15552 profile cylinders with a 50 mm bore, 20 mm stroke, and G1/4 port, provided you use the appropriate mounting accessories.
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