Airtac SAI125 Standard Air Cylinder SAI125BX175
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX175 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 175mm 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
- Stroke175 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX175
The AirTAC SAI125X175 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It delivers a substantial 6136N push force at 0.5 MPa, extending 175mm to drive high-mass payloads. The extruded aluminum barrel design omits tie-rods, providing a clean exterior that resists debris accumulation.
This specific configuration features a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in washdown or chemically active settings. Fluid ports are PT tapered thread type. While standard adjustable air cushions decelerate the massive 125mm piston at both stroke ends, maintaining position without live air pressure requires the SAIL locking variant or an external rod lock.
Airtac SAI125 Standard Air Cylinder SAI125BX175 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX175 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 175 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 SAI125BX175
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×175 | 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 SAI125BX175 Is Used
Heavy Metal Stamping
Provides the 6136N push force at 0.5 MPa required to form and stamp thick metal sheets in automated fabrication lines.
Pallet Diverting
Actuates heavy-duty diverters on packaging conveyors, using the 175mm stroke to push loaded pallets onto secondary routing tracks.
Injection Molding Ejection
Ejects dense plastic molded parts from heavy industrial presses, leveraging the SUS304 stainless steel rod for durability in high-heat environments.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX175 the Right Cylinder?
Select this 125mm bore when a 100mm cylinder is insufficient. A 100mm bore provides 3927N push force at 0.5 MPa, whereas this SAI125X175 yields 6136N at the same pressure. If your application demands even higher force, stepping up to the 160mm bore offers 10053N at 0.5 MPa. Operating speed for this 125mm bore is 30-500 mm/s.
Because this model is a genuine ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 cylinders. When replacing a unit, verify the 175mm stroke, PT G1/2 port, and required mounting accessories like the CA clevis or TC trunnion. Note that position holding without air pressure is not native to the standard SAI; utilize the BSAI clamp-lock variant if drop prevention is mandatory.
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 SAI125BX175 FAQ
At an operating pressure of 0.5 MPa, the SAI125X175 provides a push force of 6136N and a pull force of 5734N. At 0.7 MPa, the push force increases to 8590N.
Yes, the SAI125X175 is a true ISO 15552 profile cylinder, meaning its mounting interface and envelope dimensions are interchangeable with other standard ISO 15552 cylinders. Ensure your PT G1/2 port and 175mm stroke match the existing fixture.
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