Airtac SAI125 Standard Air Cylinder SAI125AX500
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX500 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 500mm 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
- Stroke500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX500
The AirTAC SAI125X500 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation, delivering a push force of 6136 N and a pull force of 5734 N at 0.5 MPa. Its 500 mm stroke provides the extended travel needed for large-format material handling and heavy payload positioning.
This specific configuration features a SUS420J2 stainless steel piston rod (material code A) for superior corrosion resistance in humid or washdown environments. It uses PT tapered port threads and operates without a magnet, relying on external sensing or mechanical stops rather than reed switches.
Airtac SAI125 Standard Air Cylinder SAI125AX500 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX500 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 500 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 SAI125AX500
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×500 | 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 SAI125AX500 Is Used
Heavy Stamping
Provides the robust 6136 N thrust required to actuate large mechanical presses and form heavy-gauge metal components securely.
Pallet Diverting
Handles large-format pallets across 500 mm of travel, utilizing the extended stroke to push heavy loads onto secondary transfer lines.
Automotive Assembly
Positions heavy vehicle chassis or drivetrain sub-assemblies during automated robotic welding and fastening processes.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX500 the Right Cylinder?
Delivering 6136 N at 0.5 MPa, this 125 mm bore is well-suited for high-thrust operations. If your application requires less force, stepping down to the 100 mm bore yields 3927 N at 0.5 MPa, whereas moving up to the 160 mm bore provides 10053 N for extreme loads. At 500 mm of travel, the extended unsupported rod is highly susceptible to bending under side loads; utilizing an external guide rail or a dedicated guided cylinder will prevent premature rod-bearing wear.
This model's PT port threads and ISO 15552 mounting interface ensure direct dimensional interchangeability with other standard profile cylinders of the same bore. Remember that the adjustable air cushions only decelerate the piston near stroke ends; they do not hold loads. If pneumatic pressure drops, the cylinder will drift, so consider the SAIL variant for pneumatic locking or the BSAI for bidirectional clamp-locking.
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 SAI125AX500 FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder generates a push force of 6136 N and a pull force of 5734 N. If pressure is increased to 0.7 MPa, the push force reaches 8590 N.
Yes, the SAI125X500 is a genuine ISO 15552 profile cylinder. Its standardized mounting dimensions and PT port threads make it dimensionally interchangeable with other ISO 15552 cylinders of the same bore size.
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