Airtac SAI125 Standard Air Cylinder SAI125X240
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X240 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 240mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke240 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X240
The AirTAC SAI125X240 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It provides a robust 6136 N push force and 5734 N pull force at 0.5 MPa. The 240 mm stroke handles substantial linear displacement tasks while maintaining standardized mounting interfaces. This genuine AirTAC component guarantees reliable, high-force output.
Beyond the standard force and dimensional ratings, this specific unit features a standard carbon steel piston rod and PT tapered port threading. If your machinery operates in elevated thermal environments, the cylinder can be specified with Viton (H) seals instead of the standard TPU to withstand higher temperatures. Additionally, for operations requiring dual-end rod extensions, the SAID variant offers a mirrored double-rod design.
Airtac SAI125 Standard Air Cylinder SAI125X240 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X240 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 240 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max stroke | Up to 1500 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAI125 Standard Air Cylinder SAI125X240
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×240 | 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 SAI125 Standard Air Cylinder SAI125X240 Is Used
Heavy Stamping
Generates sufficient force to actuate large mechanical presses and form thick metal components.
Automotive Assembly
Drives heavy-duty clamping fixtures and positions large chassis sub-assemblies on the production line.
Pallet Diverting
Shifts heavy pallet flows and redirects substantial material loads across high-capacity conveyor belts.
Is the Airtac SAI125 Standard Air Cylinder SAI125X240 the Right Cylinder?
Selecting this 125 mm bore provides 6136 N of push force at 0.5 MPa. If your application requires less force, stepping down to the 100 mm bore yields 3927 N at 0.5 MPa, while moving up to the 160 mm bore offers 10053 N for heavier loads. Because the 240 mm stroke exceeds 300 mm is not applicable here, standard rod bearing bending is minimal, but side loads should still be minimized.
For position holding safety, note that the standard adjustable air cushions only decelerate the piston at stroke ends and do not lock the load. If air pressure is lost, the rod will drift. To secure a suspended load without live pressure, specify the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variant. This SAI125X240 is dimensionally interchangeable per ISO 15552, featuring a G1/2 port, TC trunnion or FA flange mounting, and requires the -S magnet option if CMSE or DMSE sensors are needed.
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 SAI125 Standard Air Cylinder SAI125X240 FAQ
At an operating pressure of 0.5 MPa, the push force is 6136 N and the pull force is 5734 N. If the pressure is increased to 0.7 MPa, the push force reaches 8590 N.
Yes, the SAI125X240 is a profile cylinder built to ISO 15552 dimensional standards, making it a drop-in replacement for other ISO 15552 cylinders of the same bore and stroke. It uses a G1/2 port and standard mounting interfaces.
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