
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X25-10S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 25mm 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 aluminium barrel keeps the frame clean while the G3/8 port feeds the 20 mm rod. A built-in magnet (-S) readies the body for CMSE or DMSE sensors.
The external adjuster lets you shorten the extend stroke on-site by up to 10 mm, so the usable travel is 15 to 25 mm without swapping the cylinder. The retract end stays fixed, and the stop screw sets the end position rather than locking the load.
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X25-10S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 25 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). |
| ×25 | 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 15 to 25 mm clamp contact point on-site via the external stop screw without remachining the fixture.
Fit a compact JIS profile diverter in a tight conveyor gap and use the magnet for immediate position feedback.
Shorten the extend stroke by up to 10 mm to set a precise lower pressing limit for delicate seating tasks.
If 1559 N at 0.5 MPa is too much, step down to the 50 mm bore for 982 N; if you need more thrust, the 80 mm bore gives 2513 N. The 10 mm adjuster is perfect for sharing a spare across slightly different short-stroke variants and fine-tuning the end position on-site. Mounting options include FA, LB, TC, TCM1, and TCM2. The -S magnet accepts CMSE/DMSE switches. Even at 25 mm, always guide the load to prevent side-load wear.
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 max 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 extend stroke is 25 mm. The external adjuster lets you shorten that extend travel by up to 10 mm on-site, giving a usable range of 15 to 25 mm. The retract end is fixed, and the adjuster sets the end position but does not lock the load.
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