Airtac SAI50 Standard Cylinder SAI50X155S
The AirTAC SAI50 Standard Cylinder SAI50X155S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 155mm 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
- Stroke155 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 SAI50X155S
The AirTAC SAI50X155-S is a double-acting ISO 15552 profile cylinder engineered to deliver 982 N of push force at 0.5 MPa. Its 155 mm stroke is a made-to-order dimension tailored for specific travel requirements outside the standard range. The extruded aluminum barrel design eliminates tie-rods, providing a smooth exterior that simplifies mounting and machine integration.
This specific configuration features a standard carbon steel piston rod and a built-in magnet for position sensing. The magnet allows seamless operation with CMSE and DMSE series reed switches, which seat directly into the dual sensor grooves machined into both sides of the barrel. Fluid filtration to 40 um and adjustable air cushions at both ends ensure reliable operation across the 30-800 mm/s speed range.
Airtac SAI50 Standard Cylinder SAI50X155S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50X155S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 155 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 SAI50X155S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×155 | 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 SAI50X155S Is Used
Custom Stroke Clamping
Ideal for specialized machining fixtures where a 155 mm reach is required to secure uneven workpieces, utilizing the 982 N push force for rigid holding.
Diversion Gate Actuation
Drives sorting gates on packaging lines, where the magnet-equipped -S option allows CMSE sensors to track the extended position for precise product routing.
Assembly Press Tending
Handles the loading and unloading of lightweight components into assembly presses, benefiting from the smooth ISO 15552 profile barrel for tight machine spacing.
Is the Airtac SAI50 Standard Cylinder SAI50X155S the Right Cylinder?
When configuring motion systems, compare this 50 mm bore against its neighbors: stepping down to a 40 mm bore yields 628 N push force at 0.5 MPa, while upgrading to a 63 mm bore provides 1559 N. Because this 155 mm stroke exceeds the standard 150 mm increment, it is manufactured as a non-standard unit. For any stroke of 300 mm or longer, external guides are recommended to prevent rod-bearing bending under side loads.
As a true ISO 15552 profile cylinder, this unit is dimensionally interchangeable with other ISO 15552 cylinders. To specify a replacement, match the 50 mm bore, 155 mm stroke, PT G1/4 port thread, and the -S magnet requirement. Note that standard double-acting cylinders drift when air pressure is removed; if the application demands position holding without live pressure, specify the SAIL (air-released lock) or BSAI (clamp-lock) variant instead of relying on the cushion.
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 SAI50X155S FAQ
At an operating pressure of 0.5 MPa, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
Yes. The SAI50X155-S is a genuine AirTac ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 cylinders. Ensure your mounting hardware and G1/4 ports align with the standard interface.
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