
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X275-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 275mm 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 SAIJ200X275-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. By turning the integrated stopper screw, you can shorten the effective travel, creating a precise 245-275 mm usable window without altering your mounting layout.
This 200 mm bore actuator uses a robust 40 mm carbon steel rod with an M36x2 thread, providing high rigidity against side loads, though external guidance is still recommended for optimal performance. The extruded aluminum barrel includes sensor grooves on both sides for mounting CMSE reed or DMSE solid-state switches if position feedback is later required.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X275-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 275 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. |
| ×275 | 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 245 to 275 mm end position during machine commissioning to set the perfect pressing depth for large assemblies without adding external mechanical stops.
Quickly adjust the retract position on a heavy-duty conveyor diverter to handle different pallet sizes on the fly, saving downtime compared to swapping out a fixed cylinder.
Fine-tune the stroke end-point on massive welding or riveting fixtures to compensate for tooling wear over time, maintaining precise alignment via the rear stopper screw.
Choose this adjustable model over a fixed-stroke SAI cylinder when a machine build requires commissioning fine-tuning or accommodating slight product-size variations without physically swapping the actuator. The rear stopper allows you to dial in the exact end position on the fly.
To replace this cylinder with an ISO 15552 equivalent, match the 200 mm bore, 275 mm stroke, 30 mm adjustment range, PT tapered port threads, and the standard carbon steel rod. Because the nominal stroke is 275 mm, ensure your setup includes an external guide rail to prevent excessive side-loading on the piston rod. Remember that the rear adjuster acts only as a travel stop; it does not hold the load if air pressure drops. For true fail-safe load holding, consider the SAIL pneumatic lock or BSAI clamp-lock series.
Quick checklist
At the maximum 1.0 MPa pressure, it delivers up to 3204 kgf.
The rear adjuster screw acts as a mechanical stop that lets you trim the effective stroke back by up to 30 mm. This creates a usable travel window of 245 to 275 mm, allowing you to fine-tune the end position without replacing the cylinder.
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