Airtac SAI125 Standard Air Cylinder SAI125X225S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X225S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 225mm 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
- Stroke225 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X225S
The AirTAC SAI125X225-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust 6136 N of push force at 0.5 MPa, this 125 mm bore unit is built to handle substantial loads across its 225 mm stroke. The extruded aluminum barrel omits tie-rods, providing a clean profile that drops directly into standardized ISO 15552 mounting footprints.
Equipped with a magnet (-S), this model is fully compatible with CMSE and DMSE sensor switches that seat neatly into the dual grooves on the barrel. It features a standard carbon steel piston rod for high tensile strength, while the adjustable air cushions at both ends absorb end-of-stroke impact. For environments requiring higher heat resistance, the standard TPU seals can be swapped for Viton (H) or NBR (N) options.
Airtac SAI125 Standard Air Cylinder SAI125X225S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X225S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 225 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 SAI125X225S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×225 | 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 SAI125X225S Is Used
Heavy Stamping
Provides the high thrust necessary for pressing bearings or forming thick metal components in automated fabrication lines.
Clamping Fixtures
Secures large automotive castings or heavy machinery frames during CNC machining and welding operations.
Pallet Diverting
Actuates heavy-duty routing gates and stops to manage fully loaded pallets on high-throughput material conveyors.
Is the Airtac SAI125 Standard Air Cylinder SAI125X225S the Right Cylinder?
Select this 125 mm bore when a 100 mm cylinder's 3927 N push force at 0.5 MPa is insufficient for your heavy lifting, but you want to avoid the added mass of a 160 mm unit. Because the 225 mm stroke is substantial, verify that your load is guided to prevent rod-bearing bending; external guide rails or a guided cylinder carriage are recommended to absorb lateral stress and prevent premature wear.
This model uses a G1/2 port and an M27x2 rod thread. It functions as a direct dimensional replacement for other ISO 15552 cylinders, matching standard FA, FB, CA, and TC mounting accessory dimensions. Note that the standard SAI lacks a locking mechanism; if the application must hold a load safely during a pressure loss, integrate an external pilot-operated check valve or specify the SAIL or BSAI locking variant.
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 SAI125X225S FAQ
At 0.5 MPa operating pressure, this cylinder generates 6136 N of push force and 5734 N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 8590 N.
Yes. The SAI125X225-S is built to the ISO 15552 standard, making its mounting dimensions and port locations interchangeable with other ISO 15552 profile cylinders of the same bore 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 SAI125X225S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.