Airtac SAI125 Standard Air Cylinder SAI125BX750S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX750S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 750mm 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
- Stroke750 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX750S
The AirTAC SAI125X750-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It provides a substantial push force of 8590 N at 0.5 MPa, making it well-suited for moving large masses over its 750 mm stroke. The extruded aluminum barrel design omits tie-rods, offering a clean exterior that simplifies mounting and sensor placement.
This specific configuration includes a SUS304 stainless steel rod for superior corrosion resistance in harsh environments. Equipped with a magnet (-S), it supports CMSE and DMSE sensor switches via the dual side grooves on the barrel. For applications requiring position holding without air pressure, consider the SAIL variant or an external rod lock.
Airtac SAI125 Standard Air Cylinder SAI125BX750S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX750S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 750 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 SAI125BX750S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×750 | 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 SAI125BX750S Is Used
Heavy Material Handling
Ideal for actuating large pallet stops or heavy-duty lift gates in automated warehousing systems where high thrust is essential.
Automotive Assembly Presses
Provides the robust linear force needed for seating bearings or pressing components in vehicle manufacturing lines.
Large Package Diverters
Drives heavy diverter arms on high-throughput conveyor networks, utilizing the full 750 mm stroke to clear wide belts.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX750S the Right Cylinder?
Selecting this 125 mm bore cylinder is appropriate when your application requires forces between 6136 N and 8590 N at 0.5 MPa. If your load requirements are lighter, stepping down to the 100 mm bore (which provides 3927 N push force) may offer a more cost-effective and compact solution. Conversely, if you need significantly higher thrust, the 160 mm bore delivers 10053 N.
With a 750 mm stroke, the unsupported rod is susceptible to bending under side loads. To prevent premature seal wear and rod-bearing failure, use external guide rails or a guided cylinder mechanism. The PT port thread and ISO 15552 mounting dimensions ensure seamless physical interchangeability with other standard profile cylinders.
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 SAI125BX750S FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder provides a push force of 8590 N and a pull force of 5734 N. At 0.7 MPa, the push force increases to 12090 N.
Yes, the SAI125X750-S shares standardized ISO 15552 mounting dimensions, allowing it to serve as a drop-in physical replacement for other profile cylinders of the same bore size. It uses a G1/2 port.
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