Airtac SAI50 Standard Cylinder SAI50AX400S
The AirTAC SAI50 Standard Cylinder SAI50AX400S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 400mm 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
- Stroke400 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 SAI50AX400S
The AirTAC SAI50X400-S is a double-acting ISO 15552 profile cylinder engineered to deliver a push force of 982 N at 0.5 MPa and a pull force of 825 N. Its 400 mm stroke provides the extended travel needed for material handling and automated clamping stations. This extruded aluminum barrel design omits tie-rods for a clean exterior.
This specific configuration includes a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. Equipped with a magnet (-S), it supports direct mounting of CMSE or DMSE sensor switches in the dual side grooves. Ports feature PT tapered threads, and the standard TPU seals accommodate operating temperatures from -20 to +70 C.
Airtac SAI50 Standard Cylinder SAI50AX400S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50AX400S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 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 SAI50AX400S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×400 | 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 SAI50AX400S Is Used
Long-Reach Diverting
Pushes products across sorting lanes on a conveyor where the 400 mm stroke bridges the gap between parallel belts.
Extended Clamping Jig
Secures oversized workpieces in machining fixtures, utilizing the 982 N push force to hold parts firmly against stops.
Pallet Push-Off
Acts as a sweep-off cylinder in palletizing cells, using the long stroke to clear finished goods from the assembly zone.
Is the Airtac SAI50 Standard Cylinder SAI50AX400S the Right Cylinder?
Selecting this 50 mm bore makes sense when 40 mm cylinders (providing 628 N push at 0.5 MPa) lack the necessary thrust, but a 63 mm bore (1559 N) would be physical overkill. The 400 mm stroke is well within the 1200 mm maximum standard stroke for this bore.
Because the stroke is 400 mm, the unsupported rod length is substantial; side loads can bend the rod or accelerate rod-bearing wear. Use external guide rails or a guided cylinder to absorb lateral forces. If the machinery requires the load to stay put during an air pressure loss, do not rely on the adjustable air cushions—they only decelerate the piston at stroke end. Instead, specify an external pilot-operated check valve or the SAIL locking variant. As a true ISO 15552 profile cylinder, it serves as a direct replacement for any standard 50 mm bore, 400 mm stroke, G1/4 ported cylinder with standard FA flange or LB foot mounts.
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 SAI50AX400S 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 you increase the pressure to 0.7 MPa, the push force rises to 1374 N.
Yes. The SAI50X400-S is built to the ISO 15552 dimensional standard, meaning its mounting interface, 50 mm bore, 400 mm stroke, and G1/4 port are fully interchangeable with other ISO 15552 profile cylinders of the same size.
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