Airtac SAI125 Standard Air Cylinder SAI125AX700
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX700 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 SAI125AX700
The AirTAC SAI125X700 is a double-acting ISO 15552 profile cylinder built for heavy-duty automation. It delivers a push force of 6136 N at 0.5 MPa and 8590 N at 0.7 MPa, making it well-suited for high-impact pressing and heavy load manipulation. The 700 mm stroke provides extensive reach for large-scale machinery.
This specific configuration features a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance in humid or mildly chemically exposed environments. It uses PT tapered port threads and lacks a standard magnet. For applications requiring pneumatic end-position locking, the SAIL variant offers an integrated air-released lock.
Airtac SAI125 Standard Air Cylinder SAI125AX700 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX700 |
|---|---|
| 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 SAI125AX700
| 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 SAI125AX700 Is Used
Heavy Metal Stamping
Provides the 8590 N at 0.7 MPa needed to form and press thick gauge sheet metal components.
Large Assembly Line Actuation
Drives massive 700 mm linear movements for positioning heavy automotive chassis subframes.
Pallet Handling
Indexes loaded pallets along transfer lines where high push force and long stroke are mandatory.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX700 the Right Cylinder?
Select this 125 mm bore cylinder when 100 mm bore models (providing 5497 N at 0.7 MPa) lack the necessary thrust for your heaviest machinery. At a 700 mm stroke, the extended rod is highly susceptible to bending under side loads. To prevent premature rod-bearing wear and piston seal failure, mount this cylinder with an external guide rail or use a fully guided pneumatic slide.
This model is dimensionally interchangeable per ISO 15552 standards, serving as a drop-in replacement for other ISO 15552 profile cylinders. Ensure your setup uses a PT G1/2 port connection and pairs with an appropriate trunnion (TC) or flange (FA) mounting accessory. Because the standard SAI lacks a magnet, position sensing requires external reed switches or upgrading to an -S magnet variant.
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 SAI125AX700 FAQ
The SAI125X700 generates a push force of 6136 N at 0.5 MPa and 8590 N at 0.7 MPa. The maximum theoretical force at 1.0 MPa is 1251 kgf.
Yes. It is a true ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 standard cylinders. It uses a G1/2 PT port and operates at speeds between 30-500 mm/s.
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