Airtac SAI125 Standard Air Cylinder SAI125AX650S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX650S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 650mm 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
- Stroke650 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX650S
The AirTAC SAI125X650-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It provides a robust push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making it well-suited for moving substantial loads over its 650 mm stroke. The extruded aluminum barrel design omits tie-rods, offering a clean profile that is dimensionally interchangeable with other ISO 15552 cylinders.
This specific configuration includes a piston magnet for direct compatibility with CMSE and DMSE sensor switches fitted into the dual side grooves. The rod is constructed from SUS420J2 stainless steel for enhanced durability against moisture, and it utilizes PT tapered port threads to ensure a secure, leak-free pneumatic connection.
Airtac SAI125 Standard Air Cylinder SAI125AX650S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX650S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 650 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 SAI125AX650S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×650 | 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 SAI125AX650S Is Used
Heavy Material Handling
Ideal for lifting and transferring heavy automotive components or metal blanks on assembly lines, utilizing its 6136 N push force to move substantial weights reliably.
Large Press Operations
Provides the necessary clamping thrust for large-scale press dies and forming equipment, where the 650 mm stroke accommodates deep draw operations.
Pallet Stopping
Acts as a heavy-duty stopper on automated pallet conveyors, using the integrated magnet and CMSE sensors to confirm stopper position for the control system.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX650S the Right Cylinder?
Selecting this 125 mm bore cylinder is appropriate when your application requires thrust that exceeds the 3927 N push force of the 100 mm bore at 0.5 MPa, but does not necessitate stepping up to the 160 mm bore which outputs 10053 N. Operating at a maximum speed of 30-500 mm/s, it balances high force with controlled motion.
Because this model features a 650 mm stroke, the extended rod is susceptible to bending under side loads. Implementing an external guide rail or choosing a fully guided cylinder is strongly recommended to prevent premature rod-bearing wear. If the machinery requires the load to be held securely in place during a loss of air pressure, a standard SAI will drift; utilize the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock instead.
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 SAI125AX650S 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. If pressure is increased to 0.7 MPa, the push force reaches 8590 N.
Yes, the SAI125X650-S is a true ISO 15552 profile cylinder. Its standardized mounting dimensions and port locations make it a drop-in replacement for other ISO 15552 cylinders, provided you match the 125 mm bore, 650 mm stroke, and G1/2 port size.
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 SAI125AX650S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.