
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 120mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
The AirTAC SAIJ200X120-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 20-120 mm from its 120 mm nominal stroke. Delivering 15708 N of push force at 0.5 MPa, it handles heavy-duty positioning tasks. This variant features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic solid-state sensors.
The rear adjustment screw allows you to fine-tune the retract end position at commissioning without adding external stops. It uses a PT tapered port thread and relies on variable air cushions at both ends to decelerate the load. Remember that the rear adjuster acts only as a travel stop, not a lock; the cylinder will not hold its load without live air pressure.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 120 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 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 | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
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. |
|---|---|
| 200 | Bore size in mm. |
| ×120 | 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 20-120 mm travel window for high-force pressing applications, ensuring precise end-position tuning during machine setup.
Quickly adjust the retract stop to accommodate different product sizes on the line without physically replacing the ISO 15552 cylinder.
Leverage the 15708 N push force and rear stopper to fine-tune heavy component seating during automated assembly commissioning.
Choose this 200 mm bore cylinder when a 160 mm bore (providing 10053 N push at 0.5 MPa) is insufficient for your thrust requirements. The adjustable stroke is ideal for product changeovers on a line, allowing you to dial in the exact end-stop from 20 to 120 mm without swapping the cylinder. For load-holding without continuous air pressure, select the SAIL or BSAI series instead, as the SAIJ adjuster is not a brake.
This SAIJ model is dimensionally interchangeable per ISO 15552. To match this exact configuration, specify the 200 mm bore, 120 mm stroke, 100 mm adjustment, PT port thread, SUS420J2 rod material, and the -S magnet. Because the nominal stroke is 120 mm, external guiding is recommended to manage side loads on the large 40 mm rod.
Quick checklist
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At 0.9 MPa, the push force increases to 28274 N.
The rear adjuster screw lets you mechanically shorten the retract stroke by up to 100 mm. This creates a usable travel window of 20-120 mm from the 120 mm nominal stroke, allowing fine-tuning of the end position without external stops.
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