Airtac SAI50 Standard Cylinder SAI50BX280S
The AirTAC Airtac SAI50 Standard Cylinder SAI50BX280S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 280mm 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
- Stroke280 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 SAI50BX280S
The AirTAC SAI50X280-S is a double-acting ISO 15552 profile cylinder engineered to deliver 982N of push force and 825N of pull force at 0.5 MPa. Its 280mm stroke provides substantial extension length for packaging and material handling tasks. The extruded aluminum barrel design omits tie rods, presenting a clean exterior that is dimensionally interchangeable with other ISO 15552 profile cylinders.
This specific configuration includes a SUS304 stainless steel piston rod (material code B), offering superior corrosion resistance for humid or mildly chemically washed environments. The -S suffix indicates a built-in magnet for position sensing, allowing seamless integration with CMSE or DMSE reed switches along the dual sensor grooves. Fluid ports utilize a PT tapered thread type.
Airtac SAI50 Standard Cylinder SAI50BX280S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50BX280S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 280 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 SAI50BX280S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×280 | 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 SAI50BX280S Is Used
Packaging Diverters
Handles the 280mm stroke extension needed to push product lanes across wide conveyor belts, utilizing the 982N push force to deflect heavy cartons.
Pallet Push-Off
Employs the SUS304 rod to withstand abrasive cardboard environments while using the dual sensor grooves to confirm full retraction before the conveyor advances.
Gate Actuation
Opens and closes large access doors or machine guards where the 50mm bore provides sufficient thrust without the bulk of a 63mm body.
Is the Airtac SAI50 Standard Cylinder SAI50BX280S the Right Cylinder?
Providing 982N at 0.5 MPa, this 50mm bore is a solid middle ground between the 40mm bore (628N) and the 63mm bore (1559N). If your application requires less force and faster cycling, step down to the 40mm; if you need to move heavier jigs, step up to the 63mm. Because the 280mm stroke creates a long unsupported rod extension, side loads can cause premature wear on the rod bearing. Using an external guide rail or a fully guided cylinder is strongly recommended to prevent rod bending.
This model uses a G1/4 port and accepts standard ISO 15552 mounting accessories like FA flanges or TC trunnions. Remember that the adjustable air cushions only decelerate the piston at stroke ends; they do not lock the load. If air pressure drops, the rod will drift. For dead-load holding without live pressure, specify the SAIL (air-released lock) variant or use an external pilot-operated check valve.
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 SAI50BX280S FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder generates 982N of push force and 825N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 1374N.
Yes. The SAI50X280-S is a true ISO 15552 profile cylinder, making its mounting dimensions fully interchangeable with other ISO 15552 profile cylinders. You can swap it directly using the existing FA, FB, or TC mounting attachments without redrilling.
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