
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X650-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 650mm 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 an extruded aluminum barrel with sensor grooves on both sides and a robust 40mm carbon steel rod with an M36x2 thread. A PT tapered G3/4 port ensures high airflow for its 30-500mm/s operating speed.
This model incorporates a rear stroke adjuster that creates a 620-650mm usable travel window, allowing you to trim the nominal 650mm stroke by up to 30mm. The adjuster functions strictly as a mechanical stop for end-position tuning and works alongside the 50mm air cushions to manage deceleration. It does not hold the load without live air; for position holding, consider an external rod lock or the AirTAC SAIL series.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X650-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 650 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. |
| ×650 | 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 620-650mm end-position during heavy press commissioning without adding external mechanical stops.
Quickly adjust the stroke by up to 30mm to accommodate new large-scale product dimensions on the fly.
Handle massive payloads requiring precise end-stop tuning while relying on external guides to manage rod side-loads.
Selecting this 200mm bore cylinder is appropriate when your application requires up to 3204kgf of maximum thrust at 1.0 MPa. The SAIJ200X650-30 is chosen over a fixed-stroke SAI when machine setups require variable end-stops or product changeovers without physically swapping the cylinder.
Because the 650mm stroke is substantial, the unsupported 40mm rod is subject to side-loading; an external guide is recommended to prevent premature seal wear. This cylinder uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets. It is dimensionally interchangeable per ISO 15552. As specified, this SKU uses a PT tapered port, a standard carbon steel rod, and no magnet.
Quick checklist
At its maximum operating pressure of 1.0 MPa, it can deliver up to 3204kgf of thrust.
The rear adjuster acts as a mechanical stop that allows you to shorten the effective travel from the nominal 650mm down to 620mm. It is designed for fine-tuning end positions at commissioning and is not a locking mechanism.
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