Airtac SAI125 Standard Air Cylinder SAI125AX15S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX15S 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 SAI125AX15S
The AirTAC SAI125X15-S is a double-acting ISO 15552 profile cylinder engineered for high-force, short-stroke applications. It delivers a robust push force of 6136 N and a pull force of 5734 N at 0.5 MPa. This 15 mm stroke configuration is a non-standard, made-to-order dimension tailored for compact clamping and heavy-duty holding tasks.
Built with an extruded aluminum barrel and dual-side sensor grooves, this model supports CMSE and DMSE reed switches for precise end-of-stroke detection. It features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and includes a magnet (-S) for immediate switch integration.
Airtac SAI125 Standard Air Cylinder SAI125AX15S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX15S |
|---|---|
| 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 SAI125AX15S
| 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 SAI125AX15S Is Used
Heavy-Duty Clamping
Ideal for securing thick steel plates during machining, utilizing the 6136 N push force within a tight 15 mm stroke.
Press Fit Operations
Delivers concentrated force for inserting bearings or pins into heavy housings where a short, powerful stroke is required.
Brake Actuation
Serves as a pneumatic actuator for heavy-duty holding brakes, using the integrated magnet to confirm brake engagement via sensors.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX15S the Right Cylinder?
Selecting this 125 mm bore over the smaller 100 mm bore significantly increases thrust, stepping up from 3927 N to 6136 N at 0.5 MPa. The 15 mm stroke is highly specialized; for standard automation tasks requiring full extension, consider standard strokes like 50 mm or 100 mm. Because this is a non-standard stroke, allow additional lead time for made-to-order manufacturing.
This cylinder uses PT tapered port threads and operates at speeds between 30-500 mm/s. As a true ISO 15552 profile cylinder, it serves as a drop-in replacement for any standard ISO 15552 unit matching the 125 mm bore, 15 mm stroke, and PT port specifications. Note that the standard SAI does not hold loads safely without continuous air pressure; for fail-safe holding, use the SAIL (air-released lock) or BSAI (clamp-lock) variants.
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 SAI125AX15S FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore 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, it is a genuine ISO 15552 profile cylinder. It is dimensionally interchangeable with other ISO 15552 standard cylinders matching the 125 mm bore, 15 mm stroke, and PT port interface.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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