Airtac SAI125 Standard Air Cylinder SAI125AX210
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX210 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 210mm 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
- Stroke210 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX210
The AirTAC SAI125X210 is a double-acting ISO 15552 profile cylinder featuring a 125mm bore and 210mm stroke. It generates a substantial 6136N push force at 0.5MPa, making it well-suited for heavy-duty positioning and high-inertia stopping tasks.
This variant uses a SUS420J2 stainless steel piston rod for enhanced corrosion resistance in humid or mildly chemically exposed environments. The extruded aluminum barrel incorporates sensor grooves on both sides, allowing direct mounting of CMSE or DMSE switches when a magnet is specified.
Airtac SAI125 Standard Air Cylinder SAI125AX210 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX210 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 210 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 SAI125AX210
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×210 | 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 SAI125AX210 Is Used
Heavy Stamping
Provides the 6136N push force required to actuate large stamping and forming presses at 0.5MPa operating pressure.
Automotive Assembly
Moves heavy chassis components or robotic gripper wrists with precise 210mm travel in high-force automotive lines.
Pallet Diverter
Diverts heavy loaded pallets on conveyor lines where high side-load capacity and robust thrust are mandatory.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX210 the Right Cylinder?
Select this 125mm bore when 100mm (3927N at 0.5MPa) lacks the necessary thrust for your heavy fixtures. Because the 210mm stroke exceeds 300mm, it is critical to manage side-load to prevent rod-bearing bending; utilize an external guide rail or select a guided cylinder to support off-center loads. For applications requiring the load to be held mechanically without continuous air pressure, integrate the SAIL locking variant or an external rod lock. This unit features PT tapered port threads and mounts via standard ISO 15552 accessories like TC trunnions or FA flanges.
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 SAI125AX210 FAQ
At 0.5MPa, the push force is 6136N and the pull force is 5734N. At 0.7MPa, the push force increases to 8590N.
Yes, as a genuine ISO 15552 profile cylinder, its mounting interface dimensions make it a drop-in replacement for other ISO 15552 standard cylinders.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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