Airtac SAI125 Standard Air Cylinder SAI125BX290S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX290S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 290mm 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
- Stroke290 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX290S
The AirTAC SAI125X290-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 high-thrust operations requiring a 290 mm stroke. The extruded aluminum barrel design ensures rigid, tie-rod-less construction while maintaining strict dimensional interchangeability with other ISO 15552 standard cylinders.
This specific configuration includes a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in harsh environments. Equipped with a magnet (-S), it supports direct mounting of CMSE and DMSE sensor switches in the dual side grooves. The cylinder operates at speeds of 30-500 mm/s and utilizes PT tapered port threads for secure pneumatic connections.
Airtac SAI125 Standard Air Cylinder SAI125BX290S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX290S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 290 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 SAI125BX290S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×290 | 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 SAI125BX290S Is Used
Heavy Stamping
Provides the high thrust necessary for forming and stamping rigid metal components in automated fabrication lines.
Pallet Diverting
Actuates heavy-duty lane diverters and sorting gates for large material handling pallets at 290 mm stroke.
Press Actuation
Drives secondary assembly presses requiring substantial downward push force and reliable end-of-stroke cushioning.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX290S the Right Cylinder?
Select this 125 mm bore when an application demands substantially more force than a 100 mm cylinder (which offers 3927 N push at 0.5 MPa) but without the physical bulk of a 160 mm unit. Because this model features a 290 mm stroke, the extended rod is susceptible to bending under side loads. To prevent premature rod-bearing wear, implement an external guide rail or use a dedicated guided cylinder to absorb lateral forces.
As a true ISO 15552 profile cylinder, this unit serves as a drop-in replacement for any standard cylinder matching this bore and stroke interface. It features a G1/2 port, an M27x2 rod thread, and adjustable air cushions at both ends. For applications requiring the load to remain stationary during a complete loss of air pressure, note that the standard adjustable cushion only decelerates the piston at stroke end and does not function as a brake; specify an SAIL or BSAI locking variant 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 SAI125BX290S 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. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X290-S is dimensionally interchangeable per ISO 15552. You can drop it into existing mounts matching the standard 125 mm bore footprint and 290 mm stroke, using the G1/2 port and M27x2 rod thread.
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