
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX475-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 475mm 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 SAIJ100X475-50 is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. This built-in adjustability allows operators to fine-tune end positions at commissioning without adding external stops or swapping the cylinder.
This unit features a SUS420J2 stainless steel rod (material code A) paired with PT tapered port threads, improving corrosion resistance and seal integrity in demanding environments. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of AirTAC CMSE reed or DMSE electronic solid-state switches. It uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting the FB, CA, CB, and CR options found on some standard variants.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX475-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 475 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. |
| ×475 | 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 425-475 mm retract position during product family changeovers without disassembling the line or adding external stopper blocks.
Use the 50 mm rear adjustment window to perfectly time the final approach distance during commissioning, absorbing mechanical tolerances in the fixture.
If you need less force, stepping down to an 80 mm bore yields 3518N at 0.7 MPa, whereas moving up to a 125 mm bore provides 8590N. The 50 mm adjustment range is ideal for product-size changeovers on a line, letting you set a new retract end-stop in minutes versus re-engineering a fixed-stroke SAI cylinder.
Because the 475 mm stroke is relatively long, the 25 mm rod diameter should carry the load with an external guide to prevent side-loading damage. Remember that the rear adjuster is a travel stop, not a locking device; it cannot hold a load without live air pressure. For true position-holding without continuous air, use an external rod lock, a pilot-operated check valve, or select the related SAIL or BSAI clamp-lock cylinders.
Quick checklist
The maximum thrust is 801 kgf at 1.0 MPa.
The rear adjuster acts as a mechanical stop that shortens the effective travel from the 475 mm nominal stroke down to a minimum of 425 mm. It only sets the end position and does not lock the load without live air pressure.
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