
The AirTAC SAIJ125 Adjustable Cylinder SAIJ125X65-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 65mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
The AirTAC SAIJ125X65-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the end position during commissioning. It provides a usable travel window of 55 to 65 mm by trimming the nominal 65 mm stroke up to 10 mm without adding external stops.
This model features PT tapered port threads and operates at speeds of 30-500 mm/s. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is added later. It uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR styles.
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X65-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 65 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.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 5734 N | 5734 N |
| 0.7 MPa | 8027 N | — |
| Max (@1.0 MPa) | 1169 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×65 | 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.
Dial in the exact 55-65 mm travel window during press commissioning to accommodate varying material thicknesses without physically swapping the actuator.
Quickly adjust the retract end-stop for new product sizes on a high-force assembly line, saving setup time and avoiding external mechanical stops.
Choose this 125 mm bore when a 100 mm cylinder (3927 N at 0.5 MPa) lacks the thrust for your heavy-duty clamping or lifting task. The adjustable stroke is ideal for product changeovers on a line, letting you dial in the exact 55-65 mm travel window on the fly rather than swapping to a fixed-stroke SAI cylinder. Remember that the rear adjuster acts as a travel stop, not a lock; the SAIJ does not hold loads without live air pressure, so consider SAIL or BSAI variants for true load-holding needs.
To match this ISO 15552 cylinder for a replacement, verify the 125 mm bore, 65 mm stroke, 10 mm adjustment range, PT G1/2 port, and the specific mounting accessory. The standard carbon steel rod is highly durable for general industrial use.
Quick checklist
At the maximum operating pressure of 1.0 MPa, it delivers up to 1251 kgf.
A rear adjusting screw acts as a mechanical stopper, allowing you to shorten the effective travel from the nominal 65 mm down to 55 mm. This creates a 55-65 mm usable window for precise end-position tuning at commissioning.
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