
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X250-100 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 hard-anodized aluminum barrel keeps the total envelope more compact than a same-bore ISO 15552 unit. A G3/8 port feeds the chamber, while adjustable air cushions of 29 mm at each end absorb end-of-stroke impact.
The external adjuster allows you to shorten the extend stroke by up to 100 mm on-site, yielding a usable forward travel of 150 to 250 mm without swapping the cylinder. This mechanism sets the end position but is not a load lock; a plain cylinder drifts on air loss, so fit an external rod lock or pilot-operated check valve if you need to hold a suspended load.
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-100 |
|---|---|
| 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.
Dial in the exact 150 to 250 mm push distance on a parcel sorting line to handle varying box sizes without changing out the actuator.
Fine-tune the extend end position on a light assembly press, using the 100 mm window to compensate for tooling wear or part height differences.
Adjust the forward stop point on a pallet handling station to accommodate different pallet depths while maintaining the same compact JIS footprint.
The 100 mm adjustable window is ideal when you need to fine-tune the extend end position across multiple stations or standardize one spare cylinder for several stroke variants. JSIJ mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because this is a non-magnet SKU, it cannot accept a CMSE or DMSE sensor; specify the -S variant if you require position detection. For this 250 mm stroke, always guide the load to prevent excessive side-loading on the rod.
Quick checklist
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. It features a 63 mm bore, 20 mm rod, G3/8 port, M18x1.5 rod thread, and 29 mm adjustable cushions at both ends.
The nominal stroke is 250 mm, which is the maximum extend travel. The external adjuster lets you shorten the extend stroke on-site by up to 100 mm, giving a usable range of 150 to 250 mm. The retract end remains fixed. This mechanism only sets the end position and does not lock the load.
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