Airtac SAI125 Standard Air Cylinder SAI125BX105
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX105 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 105mm 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
- Stroke105 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX105
The AirTAC SAI125X105 is a robust double-acting profile cylinder built to the ISO 15552 standard, offering a substantial 6136 N push force and 5734 N pull force at 0.5 MPa. Its 105 mm stroke is a made-to-order dimension tailored for specific mid-stroke machinery requirements. Operating at speeds between 30 and 500 mm/s, it integrates adjustable air cushions at both ends to decelerate heavy loads smoothly.
This specific configuration features a SUS304 stainless steel piston rod (material code B), providing excellent corrosion resistance for harsh or washdown environments. The barrel extrusion includes dual sensor grooves for fitting CMSE or DMSE switches, though a magnetic piston (-S) would be required for that functionality. It utilizes PT tapered port threads and supports high-temperature Viton seals (code H) up to 70 C if specified.
Airtac SAI125 Standard Air Cylinder SAI125BX105 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX105 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 105 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 SAI125BX105
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×105 | 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 SAI125BX105 Is Used
Heavy Metal Stamping
Provides the high thrust necessary for pressing and forming thick metal components in automated fabrication lines.
Large Injection Molds
Actuates massive mold halves and heavy platens where a 100mm bore lacks the required physical force.
Pallet Handling
Drives robust lifting and positioning mechanisms for heavy industrial pallets in high-capacity logistics.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX105 the Right Cylinder?
Selecting this 125 mm bore is ideal when 80 mm falls short—yielding 2513 N at 0.5 MPa—or when 100 mm (3927 N) cannot meet your thrust demands. Because this 105 mm stroke is non-standard, expect a made-to-order lead time. For applications requiring fail-safe load holding upon air loss or valve centering, note that the standard adjustable cushion only decelerates the piston and does not lock it; you must specify the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variant, or use an external rod lock.
As a true ISO 15552 profile cylinder, this model serves as a drop-in replacement for other ISO 15552 cylinders matching its 125 mm bore, 105 mm stroke, G1/2 port, and standard mounting accessories like FA/FB flanges or TC trunnions. Ensure you order the -S suffix if you need magnetic position sensing.
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 SAI125BX105 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 dimensionally interchangeable per ISO 15552. You can use it as a drop-in replacement for any standard ISO 15552 cylinder with the same 125 mm bore and mounting interface.
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