Airtac SAI50 Standard Cylinder SAI50X250S
The AirTAC SAI50 Standard Cylinder SAI50X250S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 250mm 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
- Stroke250 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 SAI50X250S
The AirTAC SAI50X250-S is a double-acting ISO 15552 profile cylinder featuring a 50mm bore and 250mm stroke. It provides a push force of 982 N at 0.5 MPa, making it well-suited for medium-duty handling tasks. The extruded aluminum barrel design omits tie rods, presenting a clean exterior.
This specific configuration includes a magnet for use with CMSE or DMSE sensor switches, which seat neatly into the dual grooves machined on both sides of the barrel. The standard carbon steel piston rod offers robust durability for industrial automation, while the PT tapered port threads ensure a reliable, mechanically sealed pneumatic connection.
Airtac SAI50 Standard Cylinder SAI50X250S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50X250S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 250 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 SAI50X250S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×250 | 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 SAI50X250S Is Used
Package Diverting
Ideal for actuating diverter arms on conveyor lines, using the 250mm stroke to push cartons smoothly between sorting lanes.
Clamp and Weld
Provides reliable clamping pressure for holding workpieces in place during light welding or machining processes.
Vertical Lifting
Handles the vertical elevation of lightweight tote boxes in automated storage racks, taking advantage of the integrated magnet for position sensing.
Is the Airtac SAI50 Standard Cylinder SAI50X250S the Right Cylinder?
With a 982 N output at 0.5 MPa, this 50mm bore sits comfortably between the 40mm (628 N) and 63mm (1559 N) options. Step up to the 63mm bore if your load demands higher thrust, or drop to the 40mm if space is tight and the force is excessive. Because this model features a 250mm stroke, the extended carbon steel rod is susceptible to bending under side loads; utilizing an external guide rail or a guided cylinder module is strongly recommended to prevent premature rod-bearing wear.
As a dimensionally interchangeable ISO 15552 unit, it serves as a direct replacement for other profile cylinders adhering to the same standard. Remember that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not lock or hold the load. If your application requires position holding upon loss of air pressure, consider the SAIL (air-released lock) variant or an external rod lock.
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 SAI50X250S FAQ
At a 0.5 MPa operating pressure, this 50mm bore cylinder generates 982 N of push force and 825 N of pull force. It can reach up to 1374 N push at 0.7 MPa.
No, the standard SAI cylinder does not hold position unpowered. The adjustable air cushions only slow the piston near stroke ends. For fail-safe load holding, use the SAIL variant with an air-released lock or an external rod lock.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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