Airtac SAI125 Standard Air Cylinder SAI125BX30
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 30mm 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
- Stroke30 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX30
The AirTAC SAI125X30 is a double-acting ISO 15552 profile cylinder engineered for high-force tasks in tight spaces. It provides a robust push force of 6136 N and a pull force of 5734 N at 0.5 MPa. The 30 mm stroke is optimal for rapid clamping or short ejection movements where a compact footprint is required.
This unit features a SUS304 stainless steel piston rod for superior corrosion resistance in washdown or chemically active environments. The extruded aluminum barrel includes dual sensor grooves for direct switch mounting. Although this specific configuration lacks a magnet for position sensing, the standardized ISO 15552 mounting interface ensures seamless mechanical interchangeability with comparable profile cylinders.
Airtac SAI125 Standard Air Cylinder SAI125BX30 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 30 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 SAI125BX30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×30 | 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 SAI125BX30 Is Used
Heavy-Duty Stamping
Generates 6136 N of thrust at 0.5 MPa for short-stroke metal stamping and forming operations.
Pallet Halting
Acts as a robust stopper for heavy pallets on assembly lines, utilizing its 30 mm stroke to absorb impact.
Industrial Clamping
Secures large welded frames or heavy cast components securely during machining or assembly processes.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX30 the Right Cylinder?
Choose this 125 mm bore when 100 mm (3927 N push at 0.5 MPa) is insufficient for your heavy-duty operations, but you want to avoid the larger 160 mm bore which requires significantly more space and air volume. The short 30 mm stroke inherently minimizes rod-bearing bending stress, making it highly reliable for high-cycle clamping without requiring external guides.
Because the SAI is a double-acting cylinder, it cannot hold a load if air pressure is removed or exhausted. The adjustable air cushions at both stroke ends only serve to decelerate the piston, not to lock it. If your application requires true position holding without continuous live pressure, specify the SAIL variant with an air-released lock or the BSAI clamp-lock cylinder. This model uses PT tapered port threads.
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 SAI125BX30 FAQ
At 0.5 MPa, the push force is 6136 N and the pull force is 5734 N. At 0.7 MPa, the push force increases to 8590 N.
Yes, it is built to the ISO 15552 standard. Its profile barrel and mounting dimensions make it mechanically interchangeable with other ISO 15552 profile cylinders, though you should verify port and rod thread compatibility.
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