Airtac SAI50 Standard Cylinder SAI50BX250S
The AirTAC SAI50 Standard Cylinder SAI50BX250S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 250mm 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
- Stroke250 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 SAI50BX250S
The AirTAC SAI50X250-S is a double-acting ISO 15552 profile cylinder offering a theoretical push force of 982 N at 0.5 MPa. Its 250 mm stroke makes it highly suitable for medium-travel material handling and assembly automation. The extruded aluminum barrel design eliminates traditional tie-rods, providing a sleek, integrated profile that easily drops into existing ISO 15552 mounting footprints.
This specific configuration includes a SUS304 stainless steel rod for superior corrosion resistance in demanding environments. It features PT tapered port threads and is equipped with a magnet (-S) to seamlessly integrate CMSE or DMSE reed sensors directly into the dual-side sensor grooves for precise end-of-stroke detection.
Airtac SAI50 Standard Cylinder SAI50BX250S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50BX250S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 250 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 SAI50BX250S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×250 | 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 SAI50BX250S Is Used
Package Sorting
Provides reliable 982 N thrust to push and divert parcels on high-speed logistics conveyor lines.
Component Assembly
Drives 250 mm travel to position and press lightweight automotive sub-components accurately.
Material Handling
Extends to transfer palletized goods between processing stations without rod corrosion risks.
Is the Airtac SAI50 Standard Cylinder SAI50BX250S the Right Cylinder?
Selecting this 50 mm bore is ideal when 40 mm cylinders (providing 628 N at 0.5 MPa) lack the necessary thrust, but a 63 mm bore (delivering 1559 N) would be excessive overkill. The 250 mm stroke provides ample travel for packaging and sorting tasks. Because the stroke is 250 mm, designers should ensure adequate rod-bearing support to prevent premature wear under minor side loads, though external guides are typically sufficient at this length.
For applications requiring position holding during a loss of air pressure, note that the standard adjustable air cushions only decelerate the piston at stroke end and do not function as a lock. In safety-critical or load-holding scenarios, consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock series. To replace an existing ISO 15552 unit, match the 50 mm bore, 250 mm stroke, G1/4 port, and desired 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 SAI50BX250S FAQ
At an operating pressure of 0.5 MPa, this 50 mm bore cylinder generates 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 SAI50X250-S is dimensionally interchangeable per ISO 15552. You can drop it into existing mounts matching the 50 mm bore, 250 mm stroke, and G1/4 port size.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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