
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X50-10S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm 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.
The hard-anodized aluminum extrusion keeps the assembly light while housing adjustable air cushions at both ends.
The JSIJ63X50-10S uses an external stop screw to trim the extend stroke by up to 10 mm on site, giving a usable forward range of 40 to 50 mm without swapping the cylinder. Because this is an -S SKU, a built-in piston magnet lets you drop CMSE or DMSE reed and electronic switches straight into the side grooves. Air connects via a G3/8 port, and the retract end remains fixed.
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X50-10S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 50 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). |
| ×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 40 to 50 mm clamping reach on a machining fixture without machining new spacers or changing the cylinder.
Adjust the stopper pin height by 10 mm on site to accommodate different product sizes flowing down a packaging line.
When sizing this unit, stepping down to a 50 mm bore lowers the 0.5 MPa push force to 982 N, while moving up to an 80 mm bore raises it to 2513 N. The adjustable 10 mm window is perfect for fine-tuning the end position on site or sharing a single spare across several stroke variants. You can mount it using FA, LB, TC, TCM1, or TCM2 brackets. The -S magnet supports CMSE/DMSE sensors for position feedback. Even at this short 50 mm stroke, always guide the load to prevent side-load wear on the rod seals.
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. This 63 mm bore model uses a G3/8 air port and features a 20 mm piston rod with an M18x1.5 rod-end thread.
The nominal extend stroke is 50 mm, which is the maximum length. An external adjuster screw lets you shorten the forward stroke by up to 10 mm on site, yielding a usable extend range of 40 to 50 mm. The retract end is fixed. Note that this stop only sets the end position; it does not lock the load, so you need an external rod lock or pilot-operated check valve to hold a load safely.
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