Airtac SAI125 Standard Air Cylinder SAI125AX300
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX300 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 300mm 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
- Stroke300 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX300
The AirTAC SAI125X300 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust 6136 N push force at 0.5 MPa, it easily handles substantial payloads across its 300 mm stroke. This standardized mounting interface ensures seamless integration into existing machinery layouts.
This specific configuration features a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. It utilizes PT tapered port threads, and because it lacks the -S magnet suffix, it is optimized purely for mechanical actuation without integrated sensor detection.
Airtac SAI125 Standard Air Cylinder SAI125AX300 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX300 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 300 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 SAI125AX300
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×300 | 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 SAI125AX300 Is Used
Heavy Stamping
Provides the high thrust necessary for forming and stamping rigid metal components in automated fabrication lines.
Injection Molding
Rugged actuation for ejecting dense molded parts from heavy machinery, utilizing the full 300 mm travel.
Pallet Handling
Drives robust lifting and positioning mechanisms for heavy pallets in high-throughput distribution centers.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX300 the Right Cylinder?
Select this 125 mm bore when a 100 mm cylinder (providing 3927 N at 0.5 MPa) cannot generate enough thrust, but you want to avoid jumping to the massive 160 mm frame. For a 300 mm stroke, the unsupported rod length is significant; side loads can cause rod-bearing bending and premature wear. Use external guide rails or a guided cylinder to absorb lateral forces.
If your workflow demands that the load stays fixed when air pressure is removed, remember that the standard adjustable air cushion only decelerates the piston at stroke end and does not act as a brake. For positive holding, specify the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock.
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 SAI125AX300 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X300 is dimensionally interchangeable per ISO 15552. You can use it as a drop-in replacement for other ISO 15552 profile cylinders with matching 125 mm bore and 300 mm stroke dimensions, utilizing standard PT port threads and mounting accessories.
Authorized Export Seller
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.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAI125 Standard Air Cylinder SAI125AX300
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.