Airtac SAI50 Standard Cylinder SAI50BX25S
The AirTAC SAI50 Standard Cylinder SAI50BX25S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm 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.
- BoreØ50 mm
- Stroke25 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 SAI50BX25S
The AirTAC SAI50X25-S is a double-acting ISO 15552 profile cylinder engineered for short-stroke automation. Delivering a push force of 982 N at 0.5 MPa, this 50 mm bore unit is built with a SUS304 stainless steel piston rod (option B) for superior corrosion resistance in washdown or chemically exposed settings. It features a magnetic piston (-S) that integrates seamlessly with CMSE and DMSE reed switches via the dual sensor grooves on the extruded aluminum barrel.
This model utilizes PT threaded ports and adjustable air cushions at both ends to dampen impact. The standardized ISO 15552 mounting interface ensures it is dimensionally interchangeable with other ISO 15552 cylinders, allowing straightforward machinery upgrades without altering existing mounting footprints.
Airtac SAI50 Standard Cylinder SAI50BX25S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50BX25S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 25 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 SAI50BX25S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | 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 SAI50 Standard Cylinder SAI50BX25S Is Used
Short-Stroke Clamping
Ideal for securing workpieces in machining fixtures where a 982 N clamping force is required over a tight 25 mm travel distance.
Package Diverting
Provides rapid actuation for sorting gates on conveyor lines, utilizing the magnetic piston for precise end-of-stroke position sensing.
Component Ejection
Delivers reliable push-off force in injection molding or stamping presses, with the SUS304 rod enduring abrasive or humid plant environments.
Is the Airtac SAI50 Standard Cylinder SAI50BX25S the Right Cylinder?
Choose this 50 mm bore when a 40 mm bore (providing 628 N at 0.5 MPa) lacks the necessary thrust, but you want to avoid the larger footprint of a 63 mm cylinder. The 25 mm stroke is optimal for compact clamping, gating, or ejecting tasks where space is restricted. For applications requiring the load to remain safely held without continuous air pressure, note that the standard adjustable cushion only decelerates motion and does not act as a brake; integrate an external pilot-operated check valve or select the SAIL locking variant for fail-safe position holding.
When specifying this model, confirm the PT port thread matches your existing fittings, select appropriate CMSE or DMSE sensors to leverage the built-in magnet, and choose ISO 15552 mounting accessories like FA flanges or TC trunnions to suit your load dynamics.
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 SAI50BX25S FAQ
At a standard operating pressure of 0.5 MPa, the SAI50X25-S generates a push force of 982 N and a pull force of 825 N. If pressure is increased to 0.7 MPa, the push force reaches 1374 N.
Yes, the SAI50X25-S is a genuine ISO 15552 profile cylinder, making its mounting dimensions fully interchangeable with other ISO 15552 cylinders. You can use it as a direct replacement without modifying the existing machine mounting interface.
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Covers non-human-caused product damage.
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