Airtac SAI125 Standard Air Cylinder SAI125X700
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X700 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 700mm 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
- Stroke700 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X700
The AirTAC SAI125X700 is a double-acting ISO 15552 profile-barrel pneumatic cylinder engineered for heavy-duty automation. Delivering a substantial 8590 N of push force at 0.7 MPa across a 700 mm stroke, it is built to move serious masses in large-scale machinery. The extruded aluminum barrel omits traditional tie-rods, presenting a clean profile that drops directly into standardized ISO 15552 mounting interfaces.
Beyond the standard spec sheet, this unit features a carbon steel piston rod for high tensile strength under heavy axial loads. Because a magnet is not specified, it uses solid pistons rather than relying on dual-sided sensor grooves for position detection. For environments requiring exceptional heat resistance, the standard TPU seals can be swapped for Viton (H) variants to handle elevated operating temperatures.
Airtac SAI125 Standard Air Cylinder SAI125X700 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X700 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 700 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 SAI125X700
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×700 | 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 SAI125X700 Is Used
Heavy Stamping Presses
Generates the 8590 N of thrust required to actuate large-tonnage stamping and forming dies in primary metal fabrication lines.
Pallet Transfer Systems
Drives heavy-duty lift-and-transfer mechanisms for fully loaded industrial pallets across 700 mm of vertical or horizontal travel.
Automotive Assembly Jigs
Positions large structural automotive components with reliable ISO 15552 mounting interfaces, ensuring rigid fixture alignment.
Is the Airtac SAI125 Standard Air Cylinder SAI125X700 the Right Cylinder?
Selecting this 125 mm bore over the smaller 100 mm option makes sense when your application demands more than the 5497 N push force the 100 mm provides at 0.7 MPa. However, if 700 mm of travel vastly exceeds your actual cycle requirement, stepping down to a 100 mm bore with a shorter stroke offers a lighter, faster moving mass. The G1/2 PT tapered port ensures high airflow to sustain the 30-500 mm/s operational speed range required for large piston volumes.
At 700 mm of extension, the unsupported rod is highly susceptible to bending under side loads, which can rapidly destroy the rod bearing and seals; utilizing an external guide rail or a fully guided cylinder is strongly recommended to absorb lateral forces. Furthermore, the adjustable air cushions at both ends only decelerate the piston near stroke completion and do not arrest movement if air pressure drops. If your fixture must maintain vertical positioning during an emergency stop or pressure loss, specify the SAIL (air-released lock) variant or integrate an external rod lock.
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 SAI125X700 FAQ
This 125 mm bore cylinder provides a push force of 8590 N and a pull force of 5734 N at a 0.7 MPa operating pressure. At the maximum 1.0 MPa pressure, the theoretical push force reaches 11045 N.
Yes, the SAI125X700 is dimensionally interchangeable per ISO 15552 standards. Its profile barrel and standardized mounting dimensions allow it to serve as a drop-in replacement for other ISO 15552 profile cylinders of the same bore and stroke, utilizing standard FA, FB, or TC mounting accessories.
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