Airtac SAI125 Standard Air Cylinder SAI125X165
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X165 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 165mm 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
- Stroke165 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X165
The AirTAC SAI125X165 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It delivers a robust 6136 N push force and 5734 N pull force at 0.5 MPa, making it well-suited for high-thrust actuation over a 165 mm stroke. The extruded aluminum barrel design omits tie rods for a clean, modern exterior.
This specific configuration features a standard carbon steel piston rod and PT tapered port threads. Because it lacks an internal magnet, external reed or solid-state switches cannot be mounted; if sensor feedback is required, an equivalent -S variant would be necessary. For applications needing dual-end positioning control, the SAID double-rod series offers an alternative.
Airtac SAI125 Standard Air Cylinder SAI125X165 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X165 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 165 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 SAI125X165
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×165 | 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 SAI125X165 Is Used
Heavy Stamping Press
Provides the high 6136 N thrust at 0.5 MPa required to actuate large mechanical stamping dies and metal forming presses.
Bulk Material Diversion
Drives heavy-duty diverter arms on aggregate or mining conveyor lines, easily moving substantial material loads across a 165 mm stroke.
Automated Assembly Press
Applies consistent downward clamping pressure for joining heavy automotive subcomponents on automated assembly lines.
Is the Airtac SAI125 Standard Air Cylinder SAI125X165 the Right Cylinder?
Select this 125 mm bore when a 100 mm cylinder (providing 3927 N push at 0.5 MPa) cannot meet your force requirements, but a larger 160 mm bore (10053 N) would be excessive overkill. The 165 mm stroke is ideal for moderate travel distances without requiring extreme rod extension lengths.
Ensure you match your replacement dimensions exactly: a 125 mm bore, 165 mm stroke, G1/2 port, and compatible mounting accessories like FA flanges or TC trunnions. Remember that standard SAI cylinders rely on adjustable air cushions to decelerate the piston at end-of-stroke; they do not hold loads pneumatically. If your machinery loses air pressure, the rod will drift, so integrate an external pilot-operated check valve or select the SAIL locking variant for fail-safe load 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 SAI125 Standard Air Cylinder SAI125X165 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X165 is dimensionally interchangeable per ISO 15552 mounting interface standards. You can drop it in to replace other standard profile cylinders with the same 125 mm bore, 165 mm stroke, and G1/2 port size.
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