Airtac SAI125 Standard Air Cylinder SAI125AX145
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX145 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 145mm 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
- Stroke145 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX145
The AirTAC SAI125X145 is a double-acting ISO 15552 profile cylinder offering a 145 mm stroke. It delivers a robust push force of 6136 N and a pull force of 5734 N at 0.5 MPa operating pressure, making it well-suited for heavy-duty actuation tasks.
This specific configuration features a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance, paired with PT tapered port threads. The extruded aluminum barrel includes dual sensor grooves for CMSE or DMSE switches, though a magnet (-S) is not specified for this unit.
Airtac SAI125 Standard Air Cylinder SAI125AX145 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX145 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 145 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 SAI125AX145
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×145 | 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 SAI125AX145 Is Used
Heavy-Duty Stamping
Provides the 6136 N push force at 0.5 MPa required to actuate large metal forming and stamping presses.
Automotive Assembly
Moves substantial chassis components or positions heavy jigs on the assembly line using its 145 mm stroke.
Pallet Handling
Indexes heavy loaded pallets through automated distribution centers with reliable high-thrust power.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX145 the Right Cylinder?
With a 125 mm bore generating 6136 N at 0.5 MPa, stepping down to a 100 mm bore reduces the push force to 3927 N, which may be insufficient for high-mass moving. Stepping up to a 160 mm bore increases the push force to 10053 N, providing a heavier thrust margin if needed.
For applications requiring the load to be held in place during air pressure loss, the standard SAI piston will drift. An external pilot-operated check valve or the AirTAC SAIL (air-released lock) variant should be specified. As a true ISO 15552 profile cylinder, it offers a dimensionally interchangeable mounting interface with a G1/2 port, TC trunnion or FA flange accessories, and no magnet (-S).
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 SAI125AX145 FAQ
At 0.5 MPa, the SAI125X145 provides a push force of 6136 N and a pull force of 5734 N. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X145 is dimensionally interchangeable per ISO 15552 mounting interface standards. It shares the same 125 mm bore, G1/2 port, and mounting dimensions as other ISO 15552 profile cylinders.
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