Airtac SAIJ125 Adjustable Cylinder SAIJ125X90-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X90-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 90mm 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
- Stroke90 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X90-10
The AirTAC SAIJ125X90-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 6136N push force at 0.5 MPa. Its defining feature is an external adjusting screw that allows you to fine-tune the effective stroke during commissioning. For this specific model, the 90mm nominal stroke can be dialed back by up to 10mm, creating an 80-90mm usable travel window for precise end-position calibration without swapping the cylinder.
This 125mm bore actuator features a carbon steel piston rod and a PT tapered port thread. It is important to note that the rear adjuster acts purely as a travel stop to set the end position, not as a lock, and it will not hold a load without continuous live air pressure. For load-holding requirements without live pressure, consider the SAIL or BSAI series instead.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X90-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X90-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 90 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 SAIJ125 Adjustable Cylinder SAIJ125X90-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×90 | 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 SAIJ125 Adjustable Cylinder SAIJ125X90-10 Is Used
Machine Setup Changeover
Dial in the exact 80-90mm travel window during product size changeovers on a packaging line, eliminating the need to physically swap out cylinders for different formats.
End-Position Tuning
Fine-tune the retract stroke by up to 10mm at commissioning to perfectly seat high-force pressing tools without adding bulky external mechanical stops.
Variable End Stops
Adjust the rear stopper screw on the fly to compensate for mechanical wear or slight material thickness variations in heavy-duty automated assembly equipment.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X90-10 the Right Cylinder?
Choose this 125mm bore adjustable-stroke cylinder when your application requires high force and variable end-stops to accommodate product changeovers on a line. If you need slightly less thrust, stepping down to a 100mm bore yields 3927N of push force at 0.5 MPa, whereas sticking with the 125mm bore provides 6136N. The adjustable stroke is ideal for machine setups requiring fine end-position tuning, offering far more flexibility than a fixed-stroke SAI cylinder.
When replacing an ISO 15552 cylinder, match the 125mm bore, 90mm stroke, 10mm adjustment range, PT port thread, and standard carbon steel rod. This SAIJ model uses a reduced mounting accessory set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options. Since this actuator lacks a magnet, it cannot host CMSE or DMSE sensors without a -S specification.
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 SAIJ125 Adjustable Cylinder SAIJ125X90-10 FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At the maximum operating pressure of 1.0 MPa, it can deliver up to 1251 kgf of push force.
The rear adjusting screw acts as a mechanical stop that lets you shorten the 90mm nominal stroke by up to 10mm, providing an 80-90mm usable travel window. It functions as a travel stop and does not lock the load without continuous air pressure.
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