
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X80-75S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 80mm stroke, G1/2 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 nominal 80 mm stroke acts as the maximum, yielding a usable extend range of 5-80 mm while the retract end remains fixed. This on-site tuning lets you dial in the exact end position without swapping the cylinder. The extruded hard-anodized aluminium barrel omits tie rods entirely, making the body shorter and more compact than a same-bore ISO 15552 unit.
Featuring a built-in piston magnet, the -S suffix supports CMSE and DMSE reed or electronic switches that drop directly into the side grooves. The G1/2 port feeds the 32 mm rod, and adjustable 33 mm air cushions decelerate the load at both ends. Note that the cushion only decelerates; a plain cylinder drifts on air loss, so fit an external rod lock or pilot-operated check valve to hold a suspended load.
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X80-75S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 80 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | G1/2 |
| Rod thread | M26×1.5 |
| 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, 33 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 | 3525 N | 3525 N |
| 0.7 MPa | 4935 N | 4935 N |
| Max (@1.0 MPa) | 719 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). |
|---|---|
| 100 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×80 | 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 5-80 mm extend contact point on a light stamping or pressing station without machining new spacers.
Adjust the stopper block position on the fly as product widths change on the line, using the 75 mm shortening window.
Fine-tune the push-off distance for varying pallet depths before the transfer arm retracts at the fixed end.
The adjustable stroke shines when you need to fine-tune the extend end position on the machine or standardize one spare across slight stroke variants. JSIJ mounting options include Basic, FA, LB, TC, TCM1, and TCM2. The -S magnet enables CMSE/DMSE sensors for position feedback. Because the stroke here is 80 mm, side-load risk is low, but for any stroke over 300 mm always guide the load to prevent rod bending.
Quick checklist
At 0.5 MPa it pushes 3927 N and pulls 3574 N. At 0.7 MPa it pushes 5497 N and pulls 5003 N. The theoretical maximum is 801 kgf at 1.0 MPa. It uses a G1/2 port and a 32 mm rod with an M26x1.5 thread.
The nominal 80 mm stroke is the maximum extend length. An external stop screw lets you shorten that extend stroke by up to 75 mm on-site, giving a usable extend range of 5-80 mm. The retract end is fixed, and this mechanism sets the end position rather than locking the load.
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