
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X250-10S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 250mm 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 extruded hard-anodized aluminium barrel keeps the total envelope shorter than a same-bore ISO 15552 unit, saving valuable machine space.
The external stop screw lets you trim the extend stroke by up to 10 mm, giving a usable range of 240-250 mm without swapping the actuator. Because this is an -S SKU, a built-in piston magnet works directly with CMSE/DMSE switches in the side grooves for precise position detection. Air connects via a G3/8 port, and adjustable cushions at both ends manage the 29 mm deceleration zone.
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-10S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 250 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). |
| ×250 | 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.
Micro-adjust the 10 mm extend window to set exact insertion depth for pressing bearings without changing the cylinder mounting.
Fine-tune the pusher end position on-site to accommodate different package widths on a single sorting line.
The 10 mm adjust window is perfect for sharing one spare cylinder across multiple stroke variants or fine-tuning the end position during machine commissioning. You can mount it using FA, LB, TC, TCM1, or TCM2 brackets. For this 250 mm stroke, ensure you use a guide rail to prevent side-load damage to the piston rod.
Quick checklist
At 0.5 MPa it pushes 1559 N and pulls 1402 N. At 0.7 MPa the push is 2182 N and pull is 1962 N. The theoretical maximum force is 318 kgf at 1.0 MPa.
The nominal 250 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 240-250 mm. The retract end remains fixed, and this stop only sets position—it does not lock the load.
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