
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X550-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 550mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
The AirTAC SAIJ200X550-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. A carbon steel rod and PT tapered port threads come standard on this large-bore unit.
Because the 550mm stroke is substantial, the 40mm rod diameter and M36x2 thread provide a robust interface, though an external guide is still recommended to manage side loads on long extensions. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet works seamlessly with AirTAC CMSE reed and DMSE electronic switches for precise end-position detection.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X550-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 550 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 | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | — |
| Max (@1.0 MPa) | 3075 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. |
|---|---|
| 200 | Bore size in mm. |
| ×550 | 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.
Perfect for automated lines handling varying product sizes, allowing operators to quickly dial back the stroke from 550mm to 520mm without adding external mechanical stops.
Suitable for heavy-duty material alignment stations where the 40mm carbon steel rod manages substantial side loads while positioning large workpieces.
The adjustable 520-550mm travel window is highly valuable for machine setups requiring variable end-stops during product changeovers, eliminating the need to physically swap out a fixed-stroke SAI cylinder.
When configuring your ISO 15552 replacement, note the PT port thread, carbon steel rod, and -S magnet for CMSE/DMSE sensors. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true fail-safe load holding, consider the SAIL or BSAI series instead.
Quick checklist
It can deliver a maximum of 3204 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the effective travel from the nominal 550mm down to 520mm. This stopper fine-tunes the retract end-position but does not lock the load; live air pressure is still required to hold position.
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