Airtac SAI125 Standard Air Cylinder SAI125BX165S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX165S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 165mm 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
- Stroke165 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX165S
The AirTAC SAI125X165-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty handling. It provides a robust push force of 8590 N at 0.7 MPa, making it well-suited for mid-stroke pressing and heavy component manipulation. The 165 mm stroke offers precise movement without excessive rod overhang.
This specific configuration features a SUS304 stainless steel rod for superior corrosion resistance in washdown or chemically active settings. It includes a built-in magnet (-S) enabling seamless integration with CMSE and DMSE sensor switches along the extruded aluminum barrel grooves. Fluid supply connects via PT tapered ports.
Airtac SAI125 Standard Air Cylinder SAI125BX165S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX165S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 165 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 SAI125BX165S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×165 | 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 SAI125BX165S Is Used
Heavy-Duty Pressing
Applies 8590 N of thrust at 0.7 MPa for assembling bearings or pressing pins into heavy metal housings.
Lift and Transfer
Lifts substantial palletized loads vertically using the 165 mm stroke, guided by external rails to prevent rod bending.
Bulk Material Diversion
Actuates large diverter gates on heavy-duty conveyor lines where high mass and friction demand substantial pushing power.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX165S the Right Cylinder?
Select this 125 mm bore when 100 mm (5497 N at 0.7 MPa) is insufficient but 160 mm (14074 N) would be excessive. The 165 mm stroke is a standard length, keeping the assembly compact. For any application requiring position holding without live air pressure, note that the standard adjustable air cushions only decelerate the piston at stroke ends; they do not lock the load. Use the SAIL variant or an external rod lock for secure holding.
As a true ISO 15552 profile cylinder, it serves as a drop-in replacement for other ISO 15552 units. Match your exact 125 mm bore, 165 mm stroke, PT porting, and required mounting accessories like FA flanges or CA clevises. The -S magnet option is necessary if you plan to use magnetic reed or solid-state sensors.
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 SAI125BX165S FAQ
At a standard operating pressure of 0.7 MPa, this 125 mm bore cylinder generates 8590 N of push force and 5734 N of pull force. At 0.5 MPa, it provides 6136 N of push force.
Yes, the SAI125X165-S is dimensionally interchangeable per ISO 15552 standards. You can swap it directly with other ISO 15552 profile cylinders of the same 125 mm bore and 165 mm stroke, provided your porting and mounting match.
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