
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X900-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 900mm 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 SAIJ200X900-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers massive thrust, pushing 28274N at 0.9 MPa, making it suited for heavy industrial forming. The integrated PT tapered port threads match the G3/4 bore specification. By turning the rear stopper screw, you achieve a usable travel window of 850-900 mm without swapping the unit.
This adjustable mechanism allows precise end-position tuning during commissioning or product changeover, eliminating the need to bolt on external stops. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed and DMSE electronic switches if a magnet is added later. The robust 40 mm carbon steel rod and M36x2 thread handle high side loads, though an external guide is still recommended for this long stroke.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X900-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 900 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. |
| ×900 | 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 850-900 mm end-stop during machine setup to accommodate varying material thicknesses in large metal forming presses.
Adjust the retract position on the fly to handle different pallet sizes without physically replacing the cylinder or adding spacers.
Fine-tune the final clamping position of heavy components on extended 900 mm strokes, ensuring precise alignment without external stops.
The adjustable stroke is chosen over a fixed SAI model when you need variable end-stops to accommodate different product sizes on the same line. Because the stroke is 900 mm, you must use an external guide to prevent excessive side-loading on the rod.
For ISO 15552 replacement, match the 200 mm bore, 900 mm stroke, 50 mm adjustment, PT port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mountings. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider the SAIL or BSAI series instead.
Quick checklist
The rear adjuster screw lets you shorten the 900 mm nominal stroke by up to 50 mm, providing a usable travel window of 850-900 mm for fine-tuning the end position.
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