Airtac SAI125 Standard Air Cylinder SAI125BX65
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX65 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 65mm 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
- Stroke65 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX65
The AirTAC SAI125X65 is a double-acting ISO 15552 profile cylinder engineered to deliver 6136 N of push force at 0.5 MPa. Its 125 mm bore and 65 mm stroke make this a non-standard, made-to-order stroke length, perfectly suited for specialized short-travel clamping or high-thrust pressing tasks.
This actuator features a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in harsh environments. It utilizes PT tapered port threads and lacks a standard magnet, meaning position sensing requires external switches rather than integrated groove sensors.
Airtac SAI125 Standard Air Cylinder SAI125BX65 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX65 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 65 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 SAI125BX65
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×65 | 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 SAI125BX65 Is Used
Heavy-Duty Clamping
Secures large metal castings or heavy plates during machining operations using its massive 6136 N thrust output.
Short-Stroke Pressing
Ideal for high-force stamping or press-fitting bearings where a compact 65 mm travel distance is required.
Corrosive Environment Actuation
The SUS304 stainless steel rod excels in chemical washdown zones or food processing lines where rust prevention is critical.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX65 the Right Cylinder?
Selecting this 125 mm bore over the 160 mm size saves space while still providing 6136 N at 0.5 MPa (compared to the 160 mm bore's 10053 N). For applications needing less force, stepping down to the 100 mm bore yields 3927 N. Because this is a 65 mm stroke, side-load bending is minimal, but always ensure rigid mounting using FA/FB flanges to support the heavy 125 mm profile.
As a true ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 cylinders of the same bore. If your machinery must hold a load vertically without continuous air pressure, this standard cylinder will drift; instead, specify the SAIL variant with an air-released lock or utilize an external rod lock mechanism.
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 SAI125BX65 FAQ
At 0.5 MPa, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. If you increase the operating pressure to 0.7 MPa, the push force rises to 8590 N.
Yes. The SAI series is a genuine ISO 15552 profile cylinder, meaning its mounting dimensions are fully interchangeable with other ISO 15552 compliant cylinders. You must match the 125 mm bore, 65 mm stroke, and PT port size for a direct drop-in replacement.
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