Airtac SAI125 Standard Air Cylinder SAI125BX80
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX80 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 SAI125BX80
The AirTAC SAI125X80 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust 6136 N push force at 0.5 MPa, this 125 mm bore unit is built to handle substantial loads. The 80 mm stroke provides rapid, high-thrust actuation over short distances.
This specific configuration features a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in harsh environments. It utilizes PT tapered port threads, and because it lacks the -S magnet option, position sensing relies on external limit switches rather than barrel-mounted reed sensors.
Airtac SAI125 Standard Air Cylinder SAI125BX80 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX80 |
|---|---|
| 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 SAI125BX80
| 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 SAI125BX80 Is Used
Heavy Stamping
Provides the intense 6136 N impact force required for short-stroke metal forming and stamping presses.
Rugged Clamping
Secures large automotive castings or heavy structural components during machining operations.
Pallet Stopping
Acts as a high-force end-stop or rugged barrier for heavy-loaded pallet conveyors.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX80 the Right Cylinder?
Select this 125 mm bore model when 80 mm of travel is sufficient but your application requires massive pushing power. If your force requirements are lower, stepping down to the 100 mm bore yields 3927 N at 0.5 MPa, which may reduce air consumption. For operations needing even greater thrust, the 160 mm bore provides 10053 N at the same pressure.
Because this standard cylinder relies entirely on compressed air to maintain its position, any loss of pressure will cause the piston to drift. If your machinery must hold a load securely during an air failure or emergency stop, integrate the SAIL variant with an air-released lock, or utilize an external pilot-operated check valve. As a dimensionally interchangeable ISO 15552 profile cylinder, it serves as a direct drop-in replacement for other standard 125 mm bore actuators with PT ports, matching standard FA flange or LB foot mounting dimensions.
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 SAI125BX80 FAQ
At 0.5 MPa, this cylinder provides 6136 N of push force and 5734 N of pull force. If operating pressure is increased to 0.7 MPa, the push force rises to 8590 N.
Yes. The SAI125X80 is a true ISO 15552 profile cylinder, making its mounting interface and envelope dimensions interchangeable with other ISO 15552 compliant cylinders from various manufacturers.
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