Airtac SAI125 Standard Air Cylinder SAI125X285CA
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X285CA is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 285mm 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
- Stroke285 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X285CA
The AirTAC SAI125X285 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust push force of 6136 N at 0.5 MPa, this 125 mm bore actuator provides a 285 mm stroke tailored for substantial load moving tasks. The extruded aluminum barrel design omits tie-rods, offering a clean exterior that drops directly into standardized ISO 15552 mounting footprints.
Equipped from the factory with a carbon steel piston rod for high tensile strength under compression, this unit utilizes PT tapered port threads and a CA clevis mounting accessory for pivoting articulation. Because a magnet for sensors is not specified, position detection relies on external methods. For environments requiring flame resistance or elevated temperatures, the standard TPU seals can be swapped for Viton (H) or NBR (N) alternatives during specification.
Airtac SAI125 Standard Air Cylinder SAI125X285CA Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X285CA |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 285 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 SAI125X285CA
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×285 | 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 SAI125X285CA Is Used
Heavy Stamping Presses
Provides the high clamping thrust needed to hold thick metal sheets in place during aggressive stamping and punching operations.
Automotive Assembly Jigs
Actuates large structural component fixtures on automotive lines, utilizing the CA clevis to accommodate angular misalignment during movement.
Pallet Diverters
Pushes fully loaded heavy pallets onto secondary packaging conveyors, relying on the 6136 N push force at 0.5 MPa to overcome inertia.
Is the Airtac SAI125 Standard Air Cylinder SAI125X285CA the Right Cylinder?
Selecting this 125 mm bore makes sense when your application requires upward of 6136 N of push force at 0.5 MPa, bridging the gap between the 80 mm bore (2513 N) and the massive 160 mm bore (10053 N). The 285 mm stroke is fully standard, falling well within the 1500 mm maximum limit for this bore size. Operating speed is capped at 30-500 mm/s for larger actuators to manage kinetic energy.
With a 285 mm stroke, the unsupported length of the piston rod increases, making it susceptible to bending under side loads. Implement an external guide rail or use a dedicated guided cylinder to prevent rod-bearing damage. Note that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not lock the load. If your system loses air pressure, the rod will drift. To hold a load securely without live pressure, specify the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock cylinder.
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 SAI125X285CA FAQ
At a 0.5 MPa operating pressure, 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 rises to 8590 N.
Yes, the SAI125X285 is built to the ISO 15552 dimensional standard, making it physically interchangeable with other ISO 15552 profile cylinders of the same bore and stroke. Ensure your mounting interface and G1/2 porting align, and note this unit uses PT tapered threads.
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