Airtac SAI50 Standard Cylinder SAI50BX125S
The AirTAC SAI50 Standard Cylinder SAI50BX125S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 125mm 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
- Stroke125 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 SAI50BX125S
The AirTAC SAI50X125-S is a double-acting ISO 15552 profile cylinder offering a 50mm bore and 125mm stroke. It generates 982N of push force and 825N of pull force at 0.5 MPa, making it well-suited for mid-range industrial actuation. The extruded aluminum barrel design omits tie rods while maintaining strict standardized mounting dimensions.
This specific configuration includes a SUS304 stainless steel piston rod (code B) for superior corrosion resistance in washdown or mildly chemical environments. Equipped with a magnet (-S), the barrel features sensor grooves on both sides for direct mounting of CMSE or DMSE reed switches. Fluid ports utilize a PT tapered thread type.
Airtac SAI50 Standard Cylinder SAI50BX125S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50BX125S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 125 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 SAI50BX125S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×125 | 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 SAI50BX125S Is Used
Packaging Equipment
Drives product diverters and sealing heads with precise 125mm strokes, utilizing the integrated magnet for end-of-stroke confirmation.
Material Handling
Indexes lightweight pallets on conveyor lines where 982N of push force at 0.5 MPa is sufficient to overcome friction and move the load.
Water-Resistant Jigs
Ideal for automated welding or machining fixtures exposed to coolant, leveraging the SUS304 stainless steel rod for rust prevention.
Is the Airtac SAI50 Standard Cylinder SAI50BX125S the Right Cylinder?
Select this 50mm bore when a 40mm bore (628N push at 0.5 MPa) lacks the necessary thrust, but an 80mm bore (2513N push) would be excessive overkill. The 125mm stroke provides ample travel for clamping, lifting, or indexing tasks without requiring extreme space.
Because this is a standard double-acting cylinder, it relies on continuous air pressure to hold position; if air is exhausted, the piston will drift. For applications requiring true load holding without live pressure, consider the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variants. As a true ISO 15552 cylinder, it serves as a direct replacement for any standard 50mm bore ISO 15552 unit with matching stroke, PT G1/4 ports, and compatible mounting accessories like FA flanges or TC trunnions.
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 SAI50BX125S FAQ
At an operating pressure of 0.5 MPa, this 50mm bore cylinder provides 982N of push force and 825N of pull force. At 0.7 MPa, the push force increases to 1374N.
Yes. The SAI series is a genuine ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 cylinders of the same bore and stroke. You can use it as a direct replacement utilizing standard mounting accessories.
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