
The AirTAC Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X50-30 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø80mm bore and 50mm stroke, G3/8 air ports and adjustable end cushioning. Its no-tie-rod, hard-anodized profile barrel is more compact than an ISO 15552 cylinder of the same bore — a space-saver on tight machines.
Delivering 2513 N of push force at 0.5 MPa, this 80 mm bore JIS profile cylinder brings compact power to tight machinery. Its extruded hard-anodized aluminum barrel omits external rods, making it shorter than a same-bore ISO 15552 unit. The G3/8 port supplies ample flow for its 30-800 mm/s speed range.
The external stop screw provides a 30 mm on-site extend-shortening window, letting you dial the usable forward stroke down from the 50 mm maximum to 20 mm without swapping parts. It handles about 1508 N of real work safely, translating to roughly 128 kg lifted vertically. Note this plain SKU lacks a magnet and cannot take a CMSE/DMSE sensor.
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X50-30 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 50 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G3/8 |
| Rod thread | M22×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 29 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC JSI (JIS standard) datasheet. Confirm against the product label before installation. Thread options: PT (blank) / G. Barrel: hard-anodized aluminum profile (no tie rods).
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 80 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×50 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensors. |
JSI-family variants: JSI (double acting), JSID (double rod), JSIJ (adjustable stroke). Mounting: LB / FA / FB / CA / CB / CR / TC / TCM1 / TCM2. Thread PT (blank) / G.
Dial in the exact seating depth of a bearing on an assembly line by shortening the extend stroke up to 30 mm on-site without machining spacers.
Adjust the folding stroke for different carton depths directly at the machine, using the external stop to set the 20 to 50 mm forward travel.
Fit a high-force 80 mm diverter into a tight transfer gap where a longer ISO 15552 cylinder would collide with the frame.
Size this 80 mm bore against the 63 mm class, which provides 1559 N push at 0.5 MPa, or step up to the 100 mm class for 3927 N if your payload grows. The 30 mm adjust window is ideal for sharing one spare across multiple stroke variants or finalizing end positions during machine commissioning. Mounting options include FA, LB, TC, TCM1, and TCM2. Because this is a non-magnet SKU, position sensing is unavailable. For any stroke over 300 mm, add external guide rails to prevent side-load wear.
Quick checklist
At 0.5 MPa it pushes 2513 N and pulls 2268 N. At 0.7 MPa it pushes 3518 N and pulls 3175 N. The theoretical maximum is 513 kgf at 1.0 MPa. It uses a G3/8 port, a 25 mm rod, and features 29 mm adjustable air cushions at both ends.
The nominal 50 mm stroke is the maximum forward travel. An external stop screw lets you shorten the extend stroke on-site by up to 30 mm, reducing usable forward travel to 20 mm. The retract end is fixed. This stop only sets the end position; it does not hold the load on air loss, so use a pilot-operated check valve for vertical holding.
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