Airtac SAI125 Standard Air Cylinder SAI125AX280S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX280S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 280mm 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
- Stroke280 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX280S
The AirTAC SAI125X280-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust push force of 8590 N at 0.7 MPa, this 125mm bore actuator provides a 280mm stroke to handle substantial loads in demanding industrial environments. Its extruded aluminum barrel design ensures rigid, tie-rod-less construction while maintaining true dimensional interchangeability with other ISO 15552 cylinders.
This specific configuration includes a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance in humid or mildly chemically washed settings. Equipped with a built-in magnet (-S), it seamlessly integrates with CMSE and DMSE sensor switches fitted into the dual side grooves. The cylinder operates at speeds of 30-500 mm/s and utilizes PT G1/2 threaded ports.
Airtac SAI125 Standard Air Cylinder SAI125AX280S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX280S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 280 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 SAI125AX280S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×280 | 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 SAI125AX280S Is Used
Heavy Stamping
Provides the high thrust necessary for pressing bearings into heavy machinery housings.
Pallet Diversion
Actuates large lane diverters to route heavy pallets along material handling lines.
Injection Molding
Drives substantial core pulls and heavy mold shifts within automotive plastic molding.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX280S the Right Cylinder?
Selecting this 125mm bore is ideal when 80mm cylinders lack the necessary thrust, stepping up from the 80mm bore's 3518 N push force at 0.7 MPa to a commanding 8590 N. Conversely, if your application requires less than 2000 N, stepping down to the 63mm bore (2182 N at 0.7 MPa) offers a more compact and economical solution.
Because this model features a 280mm stroke, the unsupported rod length is substantial; always use an external guide rail or a dual-guide cylinder to prevent rod-bearing bending under side loads. For applications requiring the load to be held securely in place during a loss of air pressure, this standard cylinder will drift, so you must specify the SAIL variant with an air-released lock or an external rod lock. To match this exact unit, specify a 125mm bore, 280mm stroke, PT G1/2 port, -S magnet, and your desired ISO 15552 mounting accessory like a TC trunnion or LB foot.
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 SAI125AX280S FAQ
At a standard operating pressure of 0.7 MPa, this 125mm bore cylinder generates a push force of 8590 N and a pull force of 5734 N. The maximum theoretical force at 1.0 MPa is 1251 kgf.
Yes, the SAI125X280-S is dimensionally interchangeable per ISO 15552. You can use it as a drop-in replacement for other ISO 15552 profile cylinders with a 125mm bore, 280mm stroke, and matching mounting interface, without claiming it is identical to a specific brand.
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 SAI125AX280S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.