
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX185-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 185mm 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 SAIJ100X185-75-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster.
This unit includes a SUS420J2 stainless steel rod (option A) for superior corrosion resistance and carries an -S magnet for position sensing. It is fully compatible with AirTAC CMSE reed and DMSE electronic switches fitted into the dual-side sensor grooves. The mounting footprint is dimensionally interchangeable per ISO 15552, utilizing the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX185-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 185 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. |
| ×185 | 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 retract distance between 110 and 185mm during machine setup to accommodate different material thicknesses without changing hardware.
Quickly adjust the stroke stop on packaging lines to handle varying carton or pallet dimensions on the fly, minimizing downtime between production runs.
The adjustable stroke is selected over a fixed SAI model when you need to fine-tune end positions at commissioning without bolting on external stops. Note that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For load-holding, use a SAIL or BSAI cylinder.
When ordering, specify the 100mm bore, 185mm stroke, 75mm adjustment, PT tapered port threads, and the -S magnet. Because the 185mm stroke is substantial, ensure your setup manages side loads with an external guide to protect the 25mm rod and M20x1.5 rod thread from deflection.
Quick checklist
The rear adjuster screw lets you mechanically shorten the 185mm nominal stroke by up to 75mm, providing a usable travel window of 110-185mm. It functions as a hard stop and does not lock the load without live air pressure.
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