Airtac SAI125 Standard Air Cylinder SAI125AX1000S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX1000S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 1000mm 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
- Stroke1000 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX1000S
The AirTAC SAI125X1000-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation, delivering a substantial 8590 N of push force at 0.7 MPa. With its 1000 mm stroke, this non-standard configuration is tailored for machinery requiring extensive linear reach. The extruded aluminum barrel design omits tie rods, providing a clean exterior that integrates smoothly into modern assemblies.
This specific configuration includes a magnet for CMSE and DMSE sensor switches, utilizing the dual sensor grooves machined into both sides of the barrel. The piston rod is constructed from SUS420J2 stainless steel, offering enhanced corrosion resistance compared to standard carbon steel. Additionally, the ports feature a PT tapered thread type, ensuring a robust, leak-free pneumatic connection.
Airtac SAI125 Standard Air Cylinder SAI125AX1000S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX1000S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 1000 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 SAI125AX1000S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×1000 | 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 SAI125AX1000S Is Used
Heavy-Duty Pressing
Ideal for exerting high pressing forces, such as assembling large bearings or forming thick metal components where 8590 N of thrust is required.
Long-Stroke Diverting
The 1000 mm stroke provides the extended reach needed to push heavy pallets or divert large products across wide conveyor systems.
Automated Welding Fixtures
Moves large welding fixtures into position with precision, utilizing the SUS420J2 stainless steel rod to withstand harsh industrial environments.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX1000S the Right Cylinder?
Selecting this 125 mm bore over the neighboring 100 mm option doubles your thrust from 5497 N to 8590 N at 0.7 MPa, which is critical for moving heavy platens or large clamping forces. If your application requires less force, dropping to the 100 mm bore saves space and air consumption. Because this model features a 1000 mm stroke, the extended rod is highly susceptible to bending under side loads; always use an external guide rail or a guided cylinder carriage to prevent premature rod-bearing wear.
As a true ISO 15552 profile cylinder, it serves as a drop-in replacement for any standard ISO 15552 unit with a 125 mm bore and 1000 mm stroke. To complete your setup, pair it with PT port fittings, an appropriate mounting accessory like a TC trunnion or CA clevis, and CMSE/DMSE switches for position detection. Note that the adjustable air cushions only decelerate the piston at stroke ends; they do not hold a load. If pressure drops, the rod will drift, so use a SAIL or BSAI locking variant for fail-safe position 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 SAI125AX1000S FAQ
At an operating pressure of 0.7 MPa, this 125 mm bore cylinder generates a push force of 8590 N and a pull force of 5734 N. It can reach a theoretical maximum of 1251 kgf at 1.0 MPa.
Yes, the SAI125X1000-S is dimensionally interchangeable per ISO 15552. It shares the standard 125 mm bore mounting interface and 1000 mm stroke dimensions, making it a direct drop-in replacement for other ISO 15552 profile cylinders.
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