Airtac SAI125 Standard Air Cylinder SAI125BX950
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX950 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 950mm 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
- Stroke950 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX950
The AirTAC SAI125X950 is a double-acting ISO 15552 profile cylinder featuring a 125mm bore and a 950mm stroke. It delivers a robust 6136 N push force at 0.5 MPa, making it well-suited for moving heavy industrial loads over extended distances. The extruded aluminum barrel integrates sensor grooves on both sides for straightforward position feedback.
Configured with a SUS304 stainless steel rod and PT tapered ports, this model resists corrosion while ensuring a reliable pneumatic seal. It operates at speeds of 30-500 mm/s and features adjustable air cushions at both ends to absorb impact energy. For multi-position tasks, consider the SAID double-rod variant.
Airtac SAI125 Standard Air Cylinder SAI125BX950 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX950 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 950 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 SAI125BX950
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×950 | 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 SAI125BX950 Is Used
Heavy Material Handling
Ideal for pushing heavy pallets or metal components across extended conveyor sections using its 6136 N push force at 0.5 MPa.
Large Press Ejection
The 950mm stroke accommodates the long extraction of bulky parts from large molding presses, utilizing adjustable cushions to halt the mass smoothly.
Automated Assembly Lifts
Raises substantial subassembly platforms to high elevation workstations, where the SUS304 rod provides reliable performance in mildly corrosive environments.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX950 the Right Cylinder?
This 125mm bore generates 6136 N at 0.5 MPa; if your application requires less force, stepping down to the 100mm bore yields 3927 N. The 950mm stroke requires careful mounting to prevent rod-bearing bending under side loads. Utilize an external guide or a dedicated guided cylinder to support the load and prevent mechanical binding.
As a dimensionally interchangeable ISO 15552 profile cylinder, it serves as a drop-in replacement for other ISO 15552 cylinders. To match this configuration, specify the 125mm bore, 950mm stroke, PT port thread, and the SUS304 rod material. Note that a plain SAI does not hold loads without live pressure; use the SAIL lock variant if the application requires position holding upon air loss.
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 SAI125BX950 FAQ
At 0.5 MPa operating pressure, the SAI125X950 provides a push force of 6136 N and a pull force of 5734 N. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X950 is a profile cylinder dimensionally interchangeable per ISO 15552. It functions as a drop-in replacement for other ISO 15552 cylinders, provided the PT ports and mounting accessories match your existing layout.
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