Airtac SAI125 Standard Air Cylinder SAI125BX75S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX75S
The AirTAC SAI125X75-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation, delivering a robust push force of 6136 N at 0.5 MPa. Its 75 mm stroke is perfectly suited for short-travel clamping, lifting, and pressing tasks that demand high thrust in a compact footprint.
This specific configuration features a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in harsh environments. Equipped with an integrated magnet (-S), it supports direct mounting of CMSE and DMSE series sensor switches along the dual extruded grooves on the aluminum barrel. Fluid ports utilize a PT tapered thread standard.
Airtac SAI125 Standard Air Cylinder SAI125BX75S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 75 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 SAI125BX75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×75 | 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 SAI125BX75S Is Used
Heavy-Duty Pressing
Generates 6136 N of push force at just 0.5 MPa, making it ideal for short-stroke metal forming, stamping, and riveting operations.
Pallet Diverting
Provides the high lateral thrust needed to redirect heavy pallets or products on high-throughput packaging and material handling lines.
Industrial Clamping
Secures large workpieces or molds during CNC machining and welding, utilizing the SUS304 rod for durability in demanding environments.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX75S the Right Cylinder?
If an application requires less force, stepping down to the 100 mm bore drops the 0.5 MPa push thrust to 3927 N, whereas moving up to the 160 mm bore increases it to 10053 N. Because the stroke is only 75 mm, side-load stress on the rod bearing is minimal, though external guides should still manage any lateral forces.
As a standard double-acting cylinder, this model will drift if air pressure is lost; applications requiring strict position holding without live pressure should utilize the SAIL (air-released lock) variant or an external pilot-operated check valve. To replace an existing ISO 15552 cylinder, match the 125 mm bore, 75 mm stroke, G1/2 port, and appropriate mounting accessory (such as LB foot or TC trunnion), ensuring a -S magnet is specified if sensors are used.
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 SAI125BX75S FAQ
At a 0.5 MPa operating pressure, it provides 6136 N of push force and 5734 N of pull force. If operated at 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X75-S is dimensionally interchangeable per ISO 15552 standards. You can use it as a drop-in replacement for other ISO 15552 profile cylinders by matching the 125 mm bore, 75 mm stroke, and G1/2 port size.
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