
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X50-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 50mm 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 SAIJ200X50-30-S is a double-acting, double-rod ISO 15552 profile cylinder engineered for heavy-duty applications requiring exact end-position tuning. Equipped with a rear stroke adjuster, this model allows you to trim the nominal 50 mm stroke back by up to 30 mm, providing a highly versatile 20-50 mm usable travel window for precise machine setup and product changeovers without swapping hardware.
This variant features a carbon steel rod and PT tapered port threads (G3/4). The integrated -S magnet enables precise position sensing when paired with AirTAC CMSE reed switches or DMSE solid-state electronic sensors mounted into the dual-side extruded aluminum barrel grooves. The rear adjuster acts purely as a travel stop to set deceleration and end-points, meaning it will not hold a load safely without continuous live air pressure.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X50-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 50 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. |
| ×50 | 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 20-50 mm travel window during heavy press commissioning to accommodate varying material thicknesses without physically swapping the cylinder.
Adjust the rear stopper on the fly during production line changeovers to instantly reset the end-of-stroke position for different product dimensions.
Selecting the SAIJ200X50-30-S is ideal when your application needs the maximum thrust of a 200 mm bore but demands on-the-fly stroke trimming within a 20-50 mm window. The rear adjuster provides commissioning fine-tune capabilities that a fixed-stroke SAI cylinder cannot offer, allowing you to dial in the exact end-stop without adding external physical stops. For load-holding without live pressure, this cylinder is insufficient; the rear stopper is not a lock, so you must specify a SAIL (air-released lock) or BSAI (clamp-lock) cylinder, or integrate an external pilot-operated check valve. This SKU matches ISO 15552 interface dimensions with a 200 mm bore, 50 mm stroke, 30 mm adjustment, PT G3/4 ports, and a magnet for CMSE/DMSE sensors. Mounting options are restricted to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Quick checklist
At its maximum rated pressure of 1.0 MPa, it delivers up to 3204 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the nominal 50 mm stroke by up to 30 mm, creating a usable travel window of 20-50 mm. It sets the end-position but does not lock the load without live air pressure.
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