
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX500-40 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 SAIJ100X500-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 460-500mm usable travel window from its 500mm nominal stroke. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
Equipped with PT tapered G1/2 ports and variable air cushions at both ends, this model allows fine end-position tuning at commissioning without swapping the cylinder or adding external stops. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure. It supports a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX500-40 |
|---|---|
| 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.
Fine-tune the end-of-stroke position within the 460-500mm window during product size transitions without physically replacing the cylinder.
Dial in the exact retraction point for conveyor diverters or indexing mechanisms directly at the rear adjustment screw.
Trim the effective travel by up to 40mm during commissioning to perfect pressing or clamping distances on the fly.
If your force requirements are lower, stepping down to an 80mm bore yields 3518N at 0.7 MPa, while moving up to a 125mm bore provides 8590N. Because the 500mm stroke is substantial, an external guide is recommended to prevent rod sag and manage side loads over long unsupported distances.
Select the adjustable SAIJ over a fixed-stroke SAI when machine setups or product changeovers demand variable end stops. To match this exact configuration for ISO 15552 replacement, specify a 100mm bore, 500mm stroke, 40mm adjustment range, PT port thread, and the desired mounting style. Note that for load-holding without continuous air pressure, you must look to the SAIL or BSAI series, as the SAIJ adjuster is not a locking mechanism.
Quick checklist
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the 500mm nominal stroke down to a minimum of 460mm. This creates a 460-500mm adjustable window for fine-tuning the end position without adding external stops.
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