
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X300-10 is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 300mm 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.
The hard-anodized aluminum extruded barrel keeps weight down while the G3/8 port handles the required air volume.
The -10 code means an external adjuster can shorten the extend stroke on site by up to 10 mm, giving a usable range of 290-300 mm without swapping the cylinder. This is ideal for fine-tuning an end position. Note this SKU lacks a magnet and cannot take CMSE/DMSE sensors. Also, the air cushion only decelerates the piston; it does not hold load on air loss, so fit an external rod lock or pilot-operated check valve for suspended loads.
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-10 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 300 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | G3/8 |
| Rod thread | M18×1.5 |
| 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 | 1402 N | 1402 N |
| 0.7 MPa | 1962 N | 1962 N |
| Max (@1.0 MPa) | 286 kgf | |
JSIJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative).
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 63 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×300 | 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.
Use the 10 mm extend adjuster to dial in the exact pusher distance on a sorting line without machining new hard stops.
Fine-tune the 300 mm stroke end position to accommodate slight pallet size variations on the fly.
The 10 mm adjustable window helps when you need to share one spare across slight stroke variants or fine-tune a final stop on-site. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because this is a 300 mm stroke, you must support the load with external guides to prevent rod bending and side-load damage. This non-magnet SKU cannot accept position sensors; specify the -S version if you need CMSE/DMSE switches.
Quick checklist
At 0.5 MPa it pushes 1559 N and pulls 1402 N. At 0.7 MPa it pushes 2182 N and pulls 1962 N. The theoretical maximum force is 318 kgf at 1.0 MPa. It uses a G3/8 port and a 20 mm rod with an M18x1.5 thread.
The nominal 300 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke by up to 10 mm on site, giving a usable range of 290-300 mm. The retract end is fixed. This mechanism sets the end position and does not lock the load.
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