
The AirTAC Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X450-20 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø80mm bore and 450mm 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 actuator brings on-site flexibility to long-stroke automation. The hard-anodized aluminum profile barrel contains no external tie rods, making the overall body shorter and more compact than a same-bore ISO 15552 cylinder. A G3/8 port feeds the 25 mm piston rod for responsive 30-800 mm/s cycling.
The external stop screw lets you trim the extend stroke by up to 20 mm on-site, giving a usable 430-450 mm forward travel while the retract end remains fixed. This mechanism lets you fine-tune the end position without physically swapping the cylinder. In practical terms it handles about 1508 N of real work safely, which means lifting roughly 128 kg vertically with a 2:1 margin. Note this plain SKU lacks a magnet and cannot take CMSE/DMSE sensors.
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ80X450-20 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 450 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). |
| ×450 | 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.
Tunes the 450 mm extend reach on-site to push varying pallet sizes onto parallel conveyor tracks without changing the actuator.
Uses the 430-450 mm adjustable window to set the exact stopping height for mixed-load pallets in a compact JIS footprint.
Lifts roughly 128 kg vertically using the 2513 N thrust class, trimming the final extend position to avoid mechanical hard stops.
When sizing this model, the neighboring 63 mm bore offers 1559 N push at 0.5 MPa for lighter duties, while the 100 mm bore steps up to 3927 N if your load exceeds the 80 mm capacity. The 20 mm adjustable window is highly useful when you need to share a single spare cylinder across multiple stroke variants or fine-tune a final end position on the machine. JSIJ mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because the 450 mm stroke is relatively long, always use external guides to prevent rod bending and side-load damage. To add position sensing you must select the -S magnet version for CMSE/DMSE switches, as this base SKU cannot accept them.
Quick checklist
This 80 mm bore cylinder pushes 2513 N and pulls 2268 N at 0.5 MPa. At 0.7 MPa it pushes 3518 N and pulls 3175 N. The theoretical maximum force is 513 kgf at 1.0 MPa. It uses a G3/8 air port, a 25 mm rod with an M22x1.5 thread, and 29 mm adjustable air cushions at both ends.
The -20 code means an external stop screw shortens the extend stroke by up to 20 mm on-site, giving a usable 430-450 mm forward travel from the 450 mm nominal maximum. The retract end is fixed. This stop only sets the end position; it is not a load lock. A plain cylinder drifts on air loss because the cushion only decelerates, so use an external rod lock or pilot-operated check valve for held loads.
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