
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X950-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 950mm 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 SAIJ200X950-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. This built-in adjuster allows precise end-position tuning at commissioning without adding external stops.
Equipped with a robust 40mm carbon steel rod and M36x2 thread, it handles heavy loads while the extruded aluminum barrel incorporates sensor grooves on both sides. The rear adjuster acts purely as a travel stop for deceleration alongside the variable air cushions; it is not a lock and will not hold the load without live air pressure.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X950-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 950 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. |
| ×950 | 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 930-950mm travel end-position during heavy machinery commissioning without swapping out the entire cylinder.
Dial in the stroke by up to 20mm on packaging lines to accommodate varying product lengths on the fly.
Choosing the SAIJ adjustable type over a fixed SAI cylinder is ideal for machine setups requiring variable end-stops during product changeovers.
For ISO 15552 replacement matching, verify the 950mm stroke, 20mm adjustment, G3/4 PT port, and standard carbon steel rod. Because the stroke is 950mm, an external guide is strongly recommended to prevent excessive side-load on the rod. For load-holding without live pressure, use an external rod lock or pilot-operated check valve, as the adjuster is only a stop.
Quick checklist
The rear adjuster screw allows you to shorten the 950mm nominal stroke by up to 20mm, creating a 930-950mm usable travel window. This stopper fine-tunes the end position but does not lock the load without continuous air pressure.
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