Airtac SAI125 Standard Air Cylinder SAI125AX5S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX5S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 5mm 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
- Stroke5 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX5S
The AirTAC SAI125X5-S is a double-acting ISO 15552 profile cylinder engineered for short-stroke, heavy-thrust tasks. It provides a substantial push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making it highly capable in demanding operations. The 5 mm stroke is ideal for high-force clamping, pressing, and ejection sequences.
This specific configuration features a SUS420J2 stainless steel rod (material code A) for superior corrosion and wear resistance in harsh environments. Equipped with a magnet (-S), the extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE or DMSE reed switches. Fluid ports utilize PT tapered threads, and the cylinder incorporates adjustable air cushions at both ends to manage piston deceleration.
Airtac SAI125 Standard Air Cylinder SAI125AX5S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX5S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 5 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 SAI125AX5S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×5 | 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 SAI125AX5S Is Used
Heavy-Duty Stamping
Delivers 6136 N of clamping force at 0.5 MPa for securely holding metal workpieces during heavy stamping and forming operations.
High-Force Ejection
Uses the 5 mm stroke to rapidly eject dense or heavy finished parts from machinery presses without requiring extensive travel.
Industrial Pressing
Ideal for inserting bearings or pins, utilizing the robust 125 mm bore and SUS420J2 stainless steel rod for reliable, repeatable force.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX5S the Right Cylinder?
With a 125 mm bore, this model is selected when 100 mm bore cylinders (providing 3927 N at 0.5 MPa) lack the necessary thrust. If 6136 N is excessive for your space constraints, stepping down to an 80 mm bore (2513 N at 0.5 MPa) might offer a more compact footprint. Because the stroke is only 5 mm, side-load bending is negligible, but ensure axial alignment to prevent rod seal damage.
As a true ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 cylinders, serving as a drop-in replacement. To secure a load mechanically without constant air pressure, consider the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variants, as standard air cushions only decelerate the piston and do not hold loads.
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 SAI125AX5S FAQ
At an operating pressure of 0.5 MPa, the SAI125X5-S cylinder 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 -S suffix indicates this model includes a magnet. The extruded aluminum barrel features sensor grooves on both sides, allowing you to directly mount CMSE or DMSE series switches for position detection.
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