Airtac SAI125 Standard Air Cylinder SAI125BX80S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX80S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 80mm 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
- Stroke80 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX80S
The AirTAC SAI125X80-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust 6136 N of push force at 0.5 MPa, this 125mm bore and 80mm stroke actuator excels in high-thrust applications. The integrated magnet enables precise position detection using CMSE or DMSE switches housed in the dual lateral sensor grooves.
Built for demanding environments, this specific configuration features a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance. Fluid connections utilize PT tapered threads, while the adjustable air cushions at both ends ensure smooth deceleration of substantial loads within the 30-500 mm/s speed range.
Airtac SAI125 Standard Air Cylinder SAI125BX80S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX80S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 80 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 SAI125BX80S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×80 | 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 SAI125BX80S Is Used
Heavy-Duty Pressing
Provides the high thrust required for assembling bearings or stamping metal components securely in automated manufacturing lines.
Industrial Clamping
Holds large workpieces firmly during machining or welding operations, utilizing the full 6136 N force at 0.5 MPa.
Pallet Stopping
Acts as a high-force stopper mechanism on heavy-load roller conveyors, safely halting pallets for robotic pickup.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX80S the Right Cylinder?
Selecting this 125mm bore is ideal when 100mm (3927 N at 0.5 MPa) lacks the necessary thrust for moving heavy assemblies, but a 160mm bore would be physically oversized and too slow. The 80mm stroke provides compact extension for clamping or pressing tasks. For applications requiring the load to remain fixed during a complete loss of air pressure, note that the standard adjustable cushion only decelerates motion at stroke ends and does not act as a brake; consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock for fail-safe holding.
As a dimensionally interchangeable ISO 15552 profile cylinder, it serves as a direct drop-in replacement for other standard cylinders sharing the same mounting interface. Ensure your setup matches the PT G1/2 port, utilizes compatible mounting accessories like FA flanges or TC trunnions, and leverages the -S magnet option for non-contact sensing.
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 SAI125BX80S FAQ
At an operating pressure of 0.5 MPa, this 125mm bore cylinder generates 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI series is a true ISO 15552 profile cylinder. It is dimensionally interchangeable with other ISO 15552 cylinders regarding mounting interfaces, but verify your port thread (PT G1/2) and rod end (M27x2) match your existing mechanical setup.
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