
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX100-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 100mm 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 SAIJ100X100-50 is a double-acting, double-rod ISO 15552 profile cylinder featuring a rear mechanical stroke adjuster. It provides a nominal 100 mm stroke that can be dialed back by up to 50 mm, creating a precise 50-100 mm usable travel window for product changeovers without adding external stops.
This specific SKU is built with a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and uses PT tapered port threads. It relies on adjustable air cushions at both ends to decelerate the load. Remember that the rear adjuster is a travel stop, not a locking device; the cylinder cannot hold a load without live air pressure.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX100-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 36 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 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. |
|---|---|
| 100 | Bore size in mm. |
| ×100 | 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 50 to 100 mm end position during product size changes without swapping the cylinder or bolting on external stopper blocks.
Use the 50 mm adjustment range to accommodate multiple part heights on a single conveyor line, relying on the built-in air cushions for smooth deceleration.
Choose this 100 mm bore when an application requires substantial thrust—stepping down to a 63 mm bore drops the push force to 1559 N at 0.5 MPa. The adjustable stroke is selected over a fixed SAI cylinder when you need fine end-position tuning at machine commissioning or frequent product-size changes. To match this ISO 15552 replacement exactly, specify: 100 mm bore, 100 mm stroke, 50 mm adjustment, PT port thread, and no magnet.
Because the stroke is 100 mm, side-load risks are moderate, but always verify the rod diameter and thread size. This model uses a robust 25 mm rod with an M20x1.5 thread, which handles side loads well. For any load-holding requirements without live air, integrate an external rod lock or pilot-operated check valve, or look to the SAIL or BSAI cylinder series.
Quick checklist
It features a rear adjusting screw that acts as a mechanical stopper, allowing you to shorten the effective travel from 100 mm down to 50 mm. This creates a 50-100 mm usable window for fine-tuning the end position at commissioning without changing the cylinder.
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