Airtac SAI125 Standard Air Cylinder SAI125X15
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X15 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 15mm 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
- Stroke15 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X15
The AirTAC SAI125X15 is a double-acting ISO 15552 profile-barrel cylinder engineered for high-force applications needing minimal travel. It generates 6136 N of push force at 0.5 MPa and 8590 N at 0.7 MPa, making it ideal for short, powerful pressing or clamping tasks. The 15 mm stroke is a made-to-order length outside the standard range.
This pneumatic actuator features a robust extruded aluminum barrel with sensor grooves on both sides. It comes equipped with a standard carbon steel piston rod and PT (tapered) port threads. For high-temperature environments up to +70 C, the standard TPU seals can be swapped for Viton (H) alternatives.
Airtac SAI125 Standard Air Cylinder SAI125X15 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X15 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 15 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 SAI125X15
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×15 | 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 SAI125X15 Is Used
Short-Stroke Pressing
Delivers 8590 N of force at 0.7 MPa for stamping, riveting, or short-stroke pressing operations.
Heavy-Duty Clamping
Ideal for securing large workpieces during machining, utilizing the 125 mm bore's massive push force.
Ejection Mechanisms
Provides a rapid, powerful 15 mm ejection stroke to free heavy parts from molds or fixtures.
Is the Airtac SAI125 Standard Air Cylinder SAI125X15 the Right Cylinder?
Selecting this 125 mm bore is appropriate when 100 mm bore (3927 N at 0.5 MPa) lacks the necessary thrust for your operation. Because the 15 mm stroke is exceptionally short, side-load bending is negligible, but ensure your mounting face is perfectly perpendicular to avoid binding. The PT porting and ISO 15552 mounting interface ensure direct dimensional interchangeability with other standard profile cylinders.
Note that the standard SAI does not hold loads when air pressure is removed; the piston drifts if the valve is centered or exhausted. If your application requires fail-safe holding without live pressure, consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock cylinder.
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 SAI125X15 FAQ
At 0.5 MPa, it provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Yes, it is a genuine ISO 15552 profile cylinder. Its mounting dimensions and PT porting match the ISO 15552 standard, allowing it to serve as a drop-in replacement for other standard profile cylinders.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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