
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200BX550-75 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
The AirTAC SAIJ200X200-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the effective travel window down to 475 mm from the 550 mm nominal stroke. It delivers massive thrust, pushing 15708 N and pulling 15080 N at 0.5 MPa, scaling up to 21991 N push at 0.7 MPa. This bore features a robust 40 mm piston rod paired with a G3/4 port to handle high flow demands.
This specific SKU utilizes a SUS304 stainless steel rod (material code B) for superior corrosion resistance in harsh environments. The extruded aluminum barrel includes sensor grooves on both sides, and because it is an adjustable-stop cylinder rather than a locking device, it requires live air to hold the load in place during machine changeover.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200BX550-75 |
|---|---|
| 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 | 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. |
| ×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.
Dial in the exact retraction point within the 475-550 mm window during commissioning to accommodate varying product lengths without replacing the cylinder.
Quickly adjust the rear stopper screw during product family transitions on heavy machinery, saving downtime compared to repositioning fixed external stops.
Leverage the 21991 N push force at 0.7 MPa to move heavy pallets or molds, relying on the 40 mm rod to withstand significant operational stresses.
Select this 200 mm bore actuator when your application requires immense force and on-the-fly end-position tuning without swapping hardware or adding external mechanical stops. If your thrust requirements are lower, stepping down to a 160 mm bore yields 10053 N of push force at 0.5 MPa, which may better suit medium-duty cycles.
When specifying a replacement, match the 200 mm bore, 550 mm stroke, 75 mm adjustment range, PT tapered port thread, and the SUS304 rod material. Since the 550 mm stroke is substantial, ensure your mounting setup—whether using the Basic, FA, LB, TC, FTC, TCM1, or TCM2 interfaces—includes an external guide to prevent side-load damage to the rod. For load-holding without continuous air pressure, consider the SAIL or BSAI series instead of relying on the rear stopper.
Quick checklist
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke by up to 75 mm, creating a usable travel window of 475 to 550 mm. It is a travel stop only, not a lock, so it cannot hold the load without live air pressure.
At 0.5 MPa, it provides 15708 N of push force and 15080 N of pull force. At 0.7 MPa, the push force increases to 21991 N.
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