
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X175-20S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 175mm 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 aluminium barrel leaves out external rods, making the unit shorter than an equivalent ISO 15552 cylinder. A G1/2 port handles the air supply, while the -S suffix means a built-in piston magnet is present for CMSE or DMSE switches.
The external adjuster lets you shorten the extend stroke on-site by up to 20 mm, giving a usable range of 155 to 175 mm without swapping the cylinder. This on-site tuning is ideal for sharing spares across slightly different machine variants.
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X175-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 175 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). |
| ×175 | 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 155 to 175 mm extend reach on a light assembly press without machining new spacers.
Adjust the stop position on the fly to handle slightly different pallet depths on a conveyor line.
Lift a 200 kg fixture vertically and fine-tune the lower clamp position safely within the 20 mm window.
The adjustable stroke shines when you need to fine-tune an end position on the factory floor or want a single spare part covering several stroke variants. You can mount it via FA, LB, TC, TCM1, or TCM2 brackets. The included magnet supports CMSE/DMSE sensors. 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 maximum is 801 kgf at 1.0 MPa. The air port is G1/2.
The nominal 175 mm extend stroke is the maximum. The external stop screw lets you shorten that extend stroke by up to 20 mm on-site, yielding a usable range of 155 to 175 mm. The retract end is fixed. This stop only sets the end position; it is not a load lock.
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