
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX500-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 500mm 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 SAIJ100X500-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 500 mm stroke that can be dialed back by up to 75 mm, yielding a highly flexible 425-500 mm usable travel window for precise end-position tuning during commissioning.
This model features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and uses PT tapered port threads with a G1/2 connection. It supports speeds of 30-800 mm/s and includes variable air cushions at both ends to decelerate the load. The rear adjuster acts strictly as a mechanical stop for end-position refinement and does not hold the load without live air pressure.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX500-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 500 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. |
| ×500 | 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 425-500 mm travel window during machine setup to accommodate different part lengths without replacing the entire cylinder.
Quickly adjust the rear stopper on a packaging line to handle varying box sizes on the fly, ensuring precise positioning.
Choose this 100 mm bore cylinder when an application demands high thrust—up to 7068N at 0.9 MPa—alongside a variable end-stop. If your setup requires less force, stepping down to an 80 mm bore yields 4523N at 0.9 MPa, whereas moving up to a 125 mm bore provides 11045N. The adjustable stroke is ideal for product-size changeovers, allowing you to fine-tune the travel limit without swapping the cylinder or adding external stops. For load-holding without continuous air pressure, consider the SAIL or BSAI series, as this adjuster is not a lock.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 500 mm nominal stroke, 75 mm adjustment range, PT port threads, and mounting choice. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 500 mm stroke is long, ensure proper external guide support to prevent excessive side-loading on the piston rod.
Quick checklist
The rear adjusting screw acts as a mechanical stop that shortens the effective travel. For this model, the 500 mm nominal stroke can be trimmed back by up to 75 mm, providing a usable travel window of 425-500 mm. It is a stop, not a lock, and does not hold the load without live air.
At 0.5 MPa, the push force is 3927N and the pull force is 3681N. At 0.9 MPa, the push force reaches 7068N. The maximum force is 801 kgf at 1.0 MPa.
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