
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X80-20 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 extruded hard-anodized aluminum profile barrel leaves out external rods, making the body shorter and more compact than a same-bore ISO 15552 cylinder.
The -20 code defines a 20 mm external adjuster window that shortens the extend stroke on site, giving a usable forward travel of 60 to 80 mm while the retract end stays fixed. You can fine-tune the end position without swapping the cylinder. Air connects via a G1/2 port, and adjustable 33 mm cushions decelerate the load at both ends. Note that this plain SKU lacks a magnet and cannot take a CMSE or DMSE sensor.
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X80-20 |
|---|---|
| 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 60 to 80 mm extend contact point for seating bearings without remounting the entire actuator.
Adjust the extend stop on the fly to sort different package sizes on a heavy packaging line.
Fine-tune the gate extension to handle varying pallet widths while delivering 3927 N of holding push at 0.5 MPa.
The 20 mm adjuster is ideal when you need to share a spare across slight stroke variants or tune the end position on site. JSIJ mounting choices cover Basic, FA, LB, TC, TCM1, and TCM2. Because this unit lacks the -S suffix, it cannot accept a magnetic sensor. Even at this 80 mm stroke, guide the load to prevent side-load wear.
Quick checklist
The theoretical maximum force is 801 kgf at 1.0 MPa. The air port size is G1/2.
The nominal 80 mm stroke is the maximum forward travel. An external stop screw lets you shorten the extend stroke by up to 20 mm on site, yielding a usable range of 60 to 80 mm. The retract end is fixed. This stop sets the end position and is not a load lock.
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