Airtac SAI125 Standard Air Cylinder SAI125X750SN
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X750SN 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 SAI125X750SN
The AirTAC SAI125X750-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It provides a robust push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making it well-suited for demanding 750 mm stroke movements. The extruded aluminum barrel omits tie-rods for a clean, standardized exterior that drops into existing ISO 15552 footprints.
This specific configuration features a carbon steel piston rod for high tensile strength and NBR seals for reliable, general-purpose pneumatic sealing. Equipped with a magnet (-S), the barrel includes integrated sensor grooves on both sides for seamless mounting of CMSE or DMSE reed switches. The PT tapered port threads ensure secure, leak-free pneumatic connections in high-vibration environments.
Airtac SAI125 Standard Air Cylinder SAI125X750SN Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X750SN |
|---|---|
| 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 SAI125X750SN
| 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 SAI125X750SN Is Used
Automotive Body Welding
Handles large stamping panels and positions heavy chassis components on welding fixtures, utilizing the 6136 N push force to secure parts during automated spot welding.
Pallet Diverting
Actuates heavy lane diverters and pusher arms on high-throughput packaging lines, where the 750 mm stroke provides the extended reach needed to redirect wide pallets.
Injection Mold Handling
Ejects and extracts large molded plastic components from heavy industrial presses, relying on the NBR seals and robust carbon steel rod for consistent cyclic performance.
Is the Airtac SAI125 Standard Air Cylinder SAI125X750SN the Right Cylinder?
Selecting this 125 mm bore over the smaller 100 mm variant is necessary when applications require more force, stepping up from 3927 N to 6136 N at 0.5 MPa. Alternatively, if your load demands even greater thrust, the 160 mm bore offers 10053 N. The 750 mm stroke is substantial; long unsupported rods are highly susceptible to bending under side loads. To prevent premature wear on the rod bearing, implement an external guide rail or utilize a dedicated guided cylinder for heavy payloads.
As a true ISO 15552 cylinder, this model provides exact dimensional interchangeability with other ISO 15552 profile cylinders, simplifying machine retrofits. Standard mounting accessories include LB foot brackets, FA/FB flanges, and CA/CB clevises. Remember that the adjustable air cushions only decelerate the piston at stroke ends; they do not lock the load. If pressure drops, the rod will drift, so deploy an external pilot-operated check valve or the BSAI clamp-lock variant for fail-safe 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 SAI125X750SN FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder generates a push force of 6136 N and a pull force of 5734 N. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X750-S is a genuine ISO 15552 profile cylinder. Its mounting dimensions, port sizes (G1/2), and rod thread (M27x2) are standardized, making it dimensionally interchangeable with other ISO 15552 compliant cylinders.
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