Airtac SAI125 Standard Air Cylinder SAI125X170
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X170 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 170mm 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
- Stroke170 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X170
The AirTAC SAI125X170 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty motion tasks. Delivering a robust 8590 N push force at 0.7 MPa across its 170 mm stroke, it handles substantial payloads with ease. The extruded aluminum barrel omits tie-rods for a clean exterior, while the standard carbon steel piston rod ensures high tensile strength for industrial loads.
This specific configuration utilizes a tapered PT G1/2 port thread and lacks a standard magnet, making it ideal for purely mechanical power transfer without sensor requirements. For elevated temperature environments up to 120 C, the seals can be upgraded to Viton (H) instead of the standard TPU, ensuring thermal stability without compromising the 30-500 mm/s operational speed range.
Airtac SAI125 Standard Air Cylinder SAI125X170 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X170 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 170 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 SAI125X170
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×170 | 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 SAI125X170 Is Used
Heavy Stamping Presses
Provides the 6136 N push force at 0.5 MPa required to actuate large stamping dies and heavy metal forming tools.
Automotive Assembly
Drives robust clamping and positioning mechanisms for vehicle chassis components on high-throughput lines.
Pallet Diverters
Handles heavy pallet redirection tasks where the 125 mm bore and 170 mm stroke supply the necessary power and reach.
Is the Airtac SAI125 Standard Air Cylinder SAI125X170 the Right Cylinder?
Select this 125 mm bore when an 80 mm bore is insufficient, as stepping up from 80 mm nearly doubles the 0.5 MPa push force from 2513 N to 6136 N. The 170 mm stroke is well below the 1500 mm maximum standard stroke, keeping the rod bearing stress low without requiring external guides. Because this is a double-acting pneumatic actuator, it cannot hold a load in place if air pressure drops; for fail-safe position holding, consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock.
When matching ISO 15552 mounting interfaces, verify the 125 mm bore dimensions, 170 mm stroke, PT G1/2 port, and compatible mounting accessories like the CA clevis or TC trunnion. If position feedback becomes necessary later, an -S magnet version paired with CMSE or DMSE switches fits directly into the dual sensor grooves on the barrel.
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 SAI125X170 FAQ
At a standard operating pressure of 0.5 MPa, the SAI125X170 provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X170 is dimensionally interchangeable per ISO 15552 standards, serving as a drop-in replacement for other standard profile cylinders with a 125 mm bore and 170 mm stroke.
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