
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200X55-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 55mm 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 SAIJ200X55-50 is a double-acting ISO 15552 profile cylinder featuring a robust 200mm bore and a rear-mounted stroke adjuster. It provides a usable travel window of 5 to 55mm, allowing precise end-position tuning during commissioning without swapping out the physical cylinder. The extruded aluminum barrel design integrates sensor grooves on both sides for straightforward CMSE or DMSE sensor mounting.
Generating substantial power, it delivers 15708N of push thrust and 15080N of pull thrust at 0.5 MPa, peaking at 3204 kgf at 1.0 MPa. The 40mm carbon steel rod and M36x2 thread provide high rigidity, while the PT tapered G3/4 port ensures reliable airflow for this heavy-duty actuator.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X55-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 55 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. |
| ×55 | 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.
Delivers up to 3204 kgf of pressing force for heavy-duty assembly operations, with the 50mm adjuster allowing precise control over the final end-position.
Ideal for tuning the exact 5 to 55mm travel window during initial machine commissioning without fabricating custom external stops.
Quickly dial in the stroke end-position on automated lines when switching between product variants that require slightly different actuation depths.
Select this 200mm bore actuator when your application requires massive force combined with a highly specific, short travel window. If you need less force, stepping down to a 160mm bore yields 10053N push at 0.5 MPa, whereas moving up is impossible within this standard range. The adjustable 50mm stopper is ideal for product changeovers on a line, acting as a fine-tune travel end rather than a fixed stop. Because the 55mm nominal stroke is short, side-load risks are minimal, but always ensure the load is guided externally.
For sizing replacements, match the 200mm bore, 55mm stroke, 50mm adjustment, PT G3/4 port, and standard carbon steel rod. Remember that the rear adjuster is a travel stop, not a locking device; the SAIJ does not hold position without live air. If your setup requires true load-holding without continuous pressure, consider an AirTAC SAIL or BSAI series cylinder instead. This profile cylinder is dimensionally interchangeable per ISO 15552.
Quick checklist
At 0.5 MPa operating pressure, it provides 15708N of push thrust and 15080N of pull thrust. At its maximum operating pressure of 1.0 MPa, it delivers up to 3204 kgf.
The rear adjuster acts as an external stopper that lets you shorten the effective travel from the nominal 55mm down to 5mm. It sets the retraction end-position but does not lock or hold the load without live air pressure.
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