
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X750-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 750mm 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 SAIJ200X750-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering massive thrust for heavy-duty automation. The integrated rear stopper allows you to trim the effective travel, creating a 700-750mm usable window to perfectly dial in the retract position without adding external stops.
This 200mm bore unit features a robust 40mm carbon steel rod with an M36x2 thread, providing excellent rigidity for high side-load resilience. It uses PT tapered port threads (G3/4) and operates at speeds of 30-500mm/s. For position sensing, you can specify the -S magnet option to integrate AirTAC CMSE reed or DMSE electronic solid-state switches into the dual sensor grooves.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X750-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 750 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. |
| ×750 | 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.
Fine-tune the 700-750mm end position during heavy press setup, ensuring precise contact without repositioning the entire machine frame.
Adapt to different large mold sizes on an assembly line by dialing the rear stopper, achieving exact stroke limits quickly without external mechanical stops.
The adjustable stroke is ideal for heavy machinery commissioning or product changeovers, allowing you to fine-tune the 700-750mm travel window on the fly instead of physically swapping cylinders. Ensure your ISO 15552 replacement matches these exact parameters: 200mm bore, 750mm stroke, 50mm adjustment, PT G3/4 port, and no magnet.
Because the stroke is 750mm, the extended rod is highly susceptible to deflection; an external guide mechanism is mandatory to prevent premature seal wear. Remember that the rear adjuster acts only as a travel stop and the air cushions only manage deceleration—neither will hold the load without live air pressure. For fail-safe load holding, consider an AirTAC SAIL pneumatic lock or BSAI clamp-lock cylinder instead.
Quick checklist
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the nominal 750mm stroke by up to 50mm. This creates a usable travel window of 700-750mm, enabling precise end-position tuning without replacing the cylinder.
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