
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X250-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 250mm 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.
It features a rear-mounted stroke adjuster that creates a 240-250mm usable travel window, allowing you to trim the effective stroke by up to 10mm. This fine-tuning capability is ideal for dialing in exact end positions during commissioning without swapping out the entire unit.
Equipped with a robust 40mm carbon steel rod and a G3/4 PT tapered port, this extruded aluminum barrel handles high flow and structural demands efficiently. The rear adjuster functions strictly as a travel stop for end-position tuning, not as a locking mechanism, meaning the cylinder cannot hold loads without continuous live air. For load-holding requirements, exploring an external rod lock or the SAIL series is recommended.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X250-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 250 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. |
| ×250 | 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 240-250mm travel window on heavy presses to achieve exact bottoming positions without adding external mechanical stops.
Quickly adjust the 10mm stroke variance during production line changeovers to accommodate slight differences in large product dimensions.
The 10mm adjustment range on this unit is specifically beneficial for machine setups where product changeovers demand slight positional tweaks rather than full stroke alterations.
When replacing an ISO 15552 cylinder, ensure you match the 200mm bore, 250mm stroke, G3/4 PT port, and the specific 10mm adjustment code. This SAIJ variant utilizes a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR configurations. Because the 250mm stroke is relatively short for this large bore, side-load concerns are minimized, but an external guide remains recommended for optimal rod bearing life.
Quick checklist
At the maximum pressure of 1.0 MPa, it can deliver up to 3204 kgf.
The rear adjuster acts as a mechanical stop that allows you to shorten the nominal 250mm stroke by up to 10mm, creating a 240-250mm usable travel window. It only sets the end position and does not lock or hold the load without live air pressure.
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