Airtac SAI125 Standard Air Cylinder SAI125X75
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X75
The AirTAC SAI125X75 is a double-acting ISO 15552 profile cylinder featuring a 125mm bore and 75mm stroke. It provides substantial thrust, yielding 8590 N push force at 0.7 MPa, making it well-suited for heavy-duty pressing and lifting tasks. The extruded aluminum barrel design omits tie rods, presenting a clean exterior that drops directly into standard ISO 15552 mounting interfaces.
This model features a standard carbon steel piston rod. For environments requiring specific fluid compatibility, the sealing options include standard TPU, NBR, or high-temperature Viton (H) elastomers. Furthermore, the barrel incorporates sensor grooves on both sides, allowing for direct integration of CMSE or DMSE switches when a magnet (-S) is specified for position detection.
Airtac SAI125 Standard Air Cylinder SAI125X75 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 75 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 SAI125X75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×75 | 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 SAI125X75 Is Used
Heavy Pressing
Delivers 11045 N at 0.9 MPa for robust metal stamping, riveting, and heavy assembly operations.
Material Forming
Ideal for powering large molds and heavy-duty forming presses requiring high force over a short distance.
Pallet Lifting
Provides the reliable thrust needed to elevate heavy industrial pallets and chassis components in automated lines.
Is the Airtac SAI125 Standard Air Cylinder SAI125X75 the Right Cylinder?
Selecting this 125mm bore is ideal when 100mm bore cylinders (providing 5497 N push at 0.7 MPa) lack the necessary thrust for your heavy loads. At a 75mm stroke, the rod bearing experiences minimal side-load stress, though external guides are always recommended for offset loads. To hold a load securely without continuous air pressure, utilize the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock, as the standard air cushion only decelerates the piston near stroke end. Ensure your ISO 15552 interchangeability matches the PT port (G1/2), M27x2 rod thread, and appropriate FA flange or TC trunnion mounts.
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 SAI125X75 FAQ
The SAI125X75 cylinder generates 6136 N push force and 5734 N pull force at 0.5 MPa. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X75 is a profile-type ISO 15552 cylinder, making it dimensionally interchangeable with other ISO 15552 standard cylinders using the same G1/2 port and M27x2 thread.
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