Airtac SAI125 Standard Air Cylinder SAI125BX190
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX190 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 190mm 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
- Stroke190 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX190
The AirTAC SAI125X190 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty operations, delivering a robust push force of 6136 N at 0.5 MPa. Its 190 mm stroke is a non-standard, made-to-order length tailored for specialized machinery requiring exact intermediate movements. The extruded aluminum barrel design omits tie rods, providing a clean exterior that simplifies mounting and maintenance.
Built for demanding environments, this specific configuration features a SUS304 stainless steel piston rod for maximum corrosion resistance and an integrated PT tapered port thread for a secure, leak-free pneumatic connection. The barrel includes dual-sided sensor grooves, allowing for flexible installation of CMSE or DMSE magnetic switches if position feedback is later required.
Airtac SAI125 Standard Air Cylinder SAI125BX190 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX190 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 190 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 SAI125BX190
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×190 | 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 SAI125BX190 Is Used
Heavy Metal Stamping
Provides the substantial 6136 N push force required to actuate large mechanical stamping presses and heavy-gauge metal forming dies.
Automotive Assembly Jigs
Drives robust clamping and positioning fixtures on automotive production lines where high force and reliable 190 mm travel are essential.
Industrial Material Handling
Actuates heavy-duty lift-and-carry mechanisms for transferring large palletized loads or heavy structural components between stations.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX190 the Right Cylinder?
Choosing this 125 mm bore cylinder makes sense when a 100 mm bore (providing 3927 N push at 0.5 MPa) lacks the power for your heavy payload, but you want to avoid the larger footprint and air consumption of a 160 mm bore. Because the 190 mm stroke is custom, expect a brief lead time for made-to-order manufacturing.
For any application stroke of 300 mm or more on this large bore, lateral side loads can cause severe rod-bearing bending and uneven wear; utilizing an external guide rail or a fully guided cylinder is strongly recommended to prevent premature failure. Note that the standard SAI does not hold its load when air pressure is lost or exhausted, as the piston will drift. For fail-safe gravity drop prevention, specify the SAIL (air-released lock) or BSAI (clamp-lock) variant.
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 SAI125BX190 FAQ
At 0.5 MPa operating pressure, the SAI125X190 generates 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 SAI125X190 is dimensionally interchangeable per ISO 15552 and serves as a drop-in replacement for other ISO 15552 profile cylinders, utilizing standard mounting accessories and a G1/2 port.
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