Airtac SAI50 Standard Cylinder SAI50BX208S
The AirTAC SAI50 Standard Cylinder SAI50BX208S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 208mm 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
- Stroke208 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 SAI50BX208S
The AirTAC SAI50X208-S is a double-acting ISO 15552 profile cylinder engineered to deliver 982 N of push force at 0.5 MPa. This specific 208 mm stroke configuration is tailored for mid-range automation tasks requiring precise linear movement. Because it adheres strictly to ISO 15552 dimensional standards, it serves as a direct replacement for comparable profile cylinders without requiring mechanical modifications.
This variant is equipped with a SUS304 stainless steel piston rod (material code B), offering superior corrosion resistance for harsh or washdown environments. It features PT tapered port threads and includes an integrated magnet (-S), enabling seamless position detection when paired with CMSE or DMSE series reed switches along the dual sensor grooves.
Airtac SAI50 Standard Cylinder SAI50BX208S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50BX208S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 208 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 SAI50BX208S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×208 | 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 SAI50BX208S Is Used
Component Ejection
Provides the 982 N push force needed to reliably eject molded parts from machinery, utilizing the 208 mm stroke to clear the work area completely.
Package Diverting
Actuates routing gates on packaging lines where the SUS304 rod withstands occasional washdowns and the integrated magnet confirms gate position.
Pallet Lifting
Raises lightweight pallets or fixtures in automated storage systems, benefiting from the ISO 15552 mounting interface for easy retrofitting.
Is the Airtac SAI50 Standard Cylinder SAI50BX208S the Right Cylinder?
Selecting this 50 mm bore is optimal when an application demands more power than a 40 mm bore (which provides 628 N at 0.5 MPa) but lacks the physical space for a 63 mm unit. The 208 mm stroke provides ample extension for indexing and lifting tasks. For mounting flexibility, this cylinder supports FA/FB flanges, LB foot brackets, and TC trunnion styles. A -S magnet suffix is required if you intend to track piston position electronically.
Because the stroke exceeds 200 mm, the unsupported rod is susceptible to bending under side loads. To prevent premature seal wear and rod bearing damage, implement an external linear guide or use a guided cylinder configuration. Note that the standard adjustable air cushion only decelerates the piston at end-of-stroke; it will not hold a load if air pressure is lost. For dead-load holding, integrate an external pilot check valve or specify a SAIL locking variant.
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 SAI50BX208S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 1374 N.
Yes. The SAI50X208-S is dimensionally interchangeable per ISO 15552 standards. You can use it as a direct replacement for other ISO 15552 profile cylinders with matching 50 mm bore and 208 mm stroke dimensions, utilizing standard PT G1/4 ports.
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