Airtac SAI125 Standard Air Cylinder SAI125AX165
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX165 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 165mm 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
- Stroke165 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX165
The AirTAC SAI125X165 is a double-acting profile cylinder built to the ISO 15552 standard, featuring a 125mm bore and a 165mm stroke. It delivers a substantial push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making it well-suited for heavy-duty actuation tasks. The extruded aluminum barrel design omits tie rods, providing a clean exterior that integrates easily into modern machinery.
This specific configuration incorporates a SUS420J2 stainless steel piston rod (material code A) for enhanced resistance to surface corrosion and scoring. Fluid connections use a PT (tapered) thread type, and the unit lacks a standard magnet (-S omitted). For applications requiring mid-stroke stopping or locking without continuous air pressure, consider the related SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variants.
Airtac SAI125 Standard Air Cylinder SAI125AX165 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX165 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 165 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 SAI125AX165
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×165 | 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 SAI125AX165 Is Used
Heavy Stamping Press
Provides the robust 6136 N push force required to actuate heavy stamping and forming presses in metal fabrication lines.
Large Valve Actuation
Drives large-diameter industrial process valves where high torque and reliable linear movement are necessary for flow control.
Pallet Diverter
Pushes heavy loaded pallets onto secondary conveyor lanes, utilizing the 165mm stroke to clear the main transport path.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX165 the Right Cylinder?
Selecting this 125mm bore provides a significant jump in thrust over the 100mm option, which offers 3927 N of push force at 0.5 MPa. If your application requires less force, stepping down reduces physical size and air consumption. Conversely, if higher force is needed, the 160mm bore yields 10053 N at the same pressure.
Because the stroke is relatively short at 165mm, side-load stress on the rod bearing is minimal compared to longer strokes. However, this standard cylinder does not hold its position if air pressure is lost or exhausted; the piston will drift. If your load must remain fixed during a pressure drop or valve centering, specify an external pilot-operated check valve or use the SAIL lock variant instead of relying on the adjustable air cushions, which only decelerate the piston near stroke end.
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 SAI125AX165 FAQ
At an operating pressure of 0.5 MPa, this 125mm bore cylinder provides 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 SAI125X165 is dimensionally interchangeable per the ISO 15552 mounting interface. It can serve as a drop-in replacement for other ISO 15552 profile cylinders, provided you match the mounting accessories and PT port thread.
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 SAI125AX165
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.