Airtac SAI50 Standard Cylinder SAI50X25S
The AirTAC SAI50 Standard Cylinder SAI50X25S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 25mm 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
- Stroke25 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 SAI50X25S
The AirTAC SAI50X25-S is a double-acting ISO 15552 profile cylinder engineered for short-stroke automation. It delivers a push force of 982 N at 0.5 MPa, making it well-suited for high-cycle clamping and ejection tasks. The extruded aluminum barrel eliminates tie-rods, providing a clean profile that drops directly into standard ISO 15552 mounting interfaces.
Equipped with a sensor magnet (-S), this unit supports CMSE and DMSE reed switches via dual grooves machined into the barrel. The piston rod utilizes durable carbon steel, and fluid routing connects via PT tapered ports. For operations experiencing elevated thermal loads, the standard TPU seals can be swapped for high-temperature Viton (H) or NBR (N) alternatives.
Airtac SAI50 Standard Cylinder SAI50X25S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50X25S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 25 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 SAI50X25S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×25 | 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 SAI50X25S Is Used
Short-Stroke Clamping
Ideal for securing workpieces in machining fixtures where a brief 25 mm extension rapidly locks parts under 982 N of force.
Package Ejection
Provides rapid, repetitive pushing power on packaging lines to divert or eject products at high speeds without occupying much length.
Gate Diverter
Drives short-arc diverter gates on conveyor systems, utilizing the integrated magnet for precise end-of-stroke position confirmation.
Is the Airtac SAI50 Standard Cylinder SAI50X25S the Right Cylinder?
Choose this 50 mm bore when an application demands more thrust than the 40 mm variant (628 N at 0.5 MPa) but has strict spatial limits. The 25 mm stroke excels at compact actuation. Because the stroke is short, rod-bearing bending is negligible, though external guides remain best practice for offset loads.
If a machine loses air pressure, the standard SAI cannot hold its load and will drift; use the SAIL variant for pneumatic locking. To replace an existing actuator, match the 50 mm bore, 25 mm stroke, G1/4 port, and mounting accessory (such as an LB foot or FA flange), ensuring the -S magnet is specified for position sensing.
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 SAI50X25S FAQ
At an operating pressure of 0.5 MPa, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
Yes. The SAI50X25-S shares standardized ISO 15552 mounting dimensions, allowing it to serve as a direct replacement for comparable profile cylinders. Match the G1/4 port and appropriate mounting accessory for a seamless swap.
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