
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X75-20 is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 75mm 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.
Its extruded hard-anodized aluminium barrel omits tie rods entirely, making the body shorter and more compact than a same-bore ISO 15552 unit. The G1/2 port feeds the 32 mm rod to generate substantial thrust.
An external stop screw lets you trim the extend stroke by up to 20 mm on-site, yielding a usable forward travel of 55-75 mm while the retract end stays fixed. You can fine-tune the end position without swapping the cylinder, which is ideal for sharing a spare across stroke variants. Note this non-magnet SKU cannot take a sensor; add an -S variant for CMSE/DMSE switches.
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X75-20 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 75 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). |
| ×75 | 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 55-75 mm extend contact point on-site via the 20 mm window to accommodate varying material thicknesses without changing the cylinder.
The 20 mm adjust window shines when you need on-site end-position tuning across similar machines. Mounting options include FA, LB, TC, TCM1, and TCM2. Because this SKU lacks the -S suffix, it cannot accept magnetic sensors; choose the -S version if you need CMSE/DMSE detection. For any stroke over 300 mm, always use a guide rail to prevent side-load wear on the rod.
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 max is 801 kgf at 1.0 MPa. It uses a G1/2 port, a 32 mm rod with an M26x1.5 thread, and 33 mm adjustable air cushions at both ends.
The nominal extend stroke is 75 mm. An external stop screw lets you shorten that forward travel by up to 20 mm on-site, giving a usable range of 55-75 mm. The retract end is fixed. This stop only sets the end position; it does not lock the load, so use a pilot-operated check valve for holding.
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