Airtac SAI125 Standard Air Cylinder SAI125BX150
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX150 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 150mm 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
- Stroke150 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX150
The AirTAC SAI125X150 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation, delivering a substantial push force of 6136 N at 0.5 MPa. Its extruded aluminum barrel design omits traditional tie rods, providing a smooth, compact exterior while maintaining strict dimensional interchangeability with other ISO 15552 standard cylinders. The 150 mm stroke is highly versatile for mid-range linear actuation in demanding industrial environments.
This specific configuration features a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in harsh or washdown settings. It utilizes PT tapered port threads and operates without a magnet; if position sensing is required, the barrel includes dual-sided sensor grooves ready to accept CMSE or DMSE switches when a -S magnet model is specified.
Airtac SAI125 Standard Air Cylinder SAI125BX150 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX150 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 150 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 SAI125BX150
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×150 | 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 SAI125BX150 Is Used
Heavy-Duty Stamping
Provides the robust 6136 N push force at 0.5 MPa required to actuate heavy mechanical stamping and forming presses.
Pallet Diversion
Ideal for diverting heavy pallets or product loads on robust material handling conveyor lines where high side-force resistance is needed.
Automotive Assembly
Drives large clamping fixtures and heavy component positioning arms in automotive body-in-white assembly cells.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX150 the Right Cylinder?
Selecting this 125 mm bore cylinder is ideal when an application demands over 6000 N of force at 0.5 MPa, bridging the gap between the 80 mm bore (2513 N) and the massive 160 mm bore (10053 N). Because the standard SAI is double-acting, it cannot hold a load in place if air pressure drops or the valve is centered; the piston will drift. For vertical loads requiring fail-safe holding, consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock cylinder.
As a true ISO 15552 profile cylinder, this model serves as a drop-in replacement for any standard 125 mm bore ISO 15552 unit. When ordering, confirm the 150 mm stroke, PT G1/2 port size, and compatible mounting accessories like FA/FB flanges or TC trunnion brackets. Since this configuration lacks a magnet (-S), external limit switches or a separate -S model are needed for position feedback.
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 SAI125BX150 FAQ
At 0.5 MPa operating pressure, the SAI125X150 generates 6136 N of push force and 5734 N of pull force. If operating at 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X150 is a genuine ISO 15552 profile cylinder, making its mounting dimensions a drop-in replacement for any other ISO 15552 compliant 125 mm bore cylinder. It is not a tie-rod design, ensuring smooth exterior integration.
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