Airtac SAI50 Standard Cylinder SAI50X425S
The AirTAC SAI50 Standard Cylinder SAI50X425S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 425mm 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
- Stroke425 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 SAI50X425S
The AirTAC SAI50X425-S is a double-acting ISO 15552 profile cylinder engineered to deliver 982 N of push force at 0.5 MPa and 825 N of pull force. The 425 mm stroke makes it highly suitable for moderate-distance material transfer and automated clamping tasks. Built with an extruded aluminum barrel, this tie-rod-less design saves space while maintaining strict dimensional interchangeability with other ISO 15552 actuators.
This specific configuration includes a standard carbon steel piston rod and a built-in magnet (-S) for position detection. The barrel features dual-sided sensor grooves designed to seamlessly house CMSE or DMSE series reed switches. For environments requiring high-temperature resistance, the standard TPU seals can be swapped for Viton (H) alternatives, and you can explore the SAID variant if your application demands dual-rod stability.
Airtac SAI50 Standard Cylinder SAI50X425S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50X425S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 425 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 SAI50X425S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×425 | 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 SAI50X425S Is Used
Extended Transfer
Pushes packages or workpieces down 425 mm transfer lines with 982 N of reliable 0.5 MPa thrust.
Automated Forming
Actuates long-stroke press or bending fixtures where moderate force and full extension are required.
Pallet Handling
Indexes lightweight pallets or trays in automated storage systems using magnetic position feedback.
Is the Airtac SAI50 Standard Cylinder SAI50X425S the Right Cylinder?
If you need less force, stepping down to a 40 bore drops the 0.5 MPa push output to 628 N. Conversely, upgrading to a 63 bore raises it to 1559 N. Because this 425 mm stroke is relatively long, the unsupported carbon steel rod is susceptible to bending under side loads. To prevent premature rod-bearing wear, implement an external guide rail or select a fully guided cylinder.
This model uses a PT tapered G1/4 port and accepts standard ISO 15552 mounting accessories like FA flanges or TC trunnions. Note that the adjustable air cushions at both ends only decelerate the piston; they do not lock the load. If pressure drops, the piston will drift, so deploy a SAIL lock variant or an external pilot-operated check valve for secure position holding.
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 SAI50X425S FAQ
At 0.5 MPa, this double-acting cylinder provides 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
No, the standard SAI50X425-S does not hold position without live pressure. The adjustable air cushions only decelerate the piston near stroke ends. For fail-safe load holding, use the SAIL lock variant or an external rod lock.
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Covers non-human-caused product damage.
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