
The AirTAC JSIJ32~50 Adjustable Cylinder JSIJ32X300-30S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø32mm bore and 300mm stroke, G1/8 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.
Its hard-anodized aluminum extruded barrel makes it shorter and more compact than a same-bore ISO 15552 unit. The G1/8 port feeds the double-acting double rod, and the integrated magnet (-S) supports CMSE/DMSE sensors in the side grooves.
The external adjuster lets you trim the extend stroke by up to 30 mm on site, giving a usable range of 270-300 mm without swapping the cylinder. Note that the air cushion only decelerates the piston; use an external rod lock or pilot-operated check valve to hold a load securely.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ32X300-30S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 300 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 20 mm |
| Max standard stroke | Up to 1000 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 | 346 N | 346 N |
| 0.7 MPa | 484 N | 484 N |
| Max (@1.0 MPa) | 70 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). |
|---|---|
| 32 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×300 | 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 270-300 mm extend stop on a small clamping fixture without machining a new hard stop.
Keep one unit as a plant spare, shortening the extend stroke by up to 30 mm to fit multiple 32 mm machines.
The 30 mm adjustable window is ideal for fine-tuning end positions on site or sharing a spare across stroke variants. You can mount it via Basic, FA, LB, TC, TCM1, or TCM2 brackets. Because the 300 mm stroke invites rod bending, always use an external guide to absorb side loads. The -S magnet enables CMSE/DMSE switches for position feedback.
Quick checklist
At 0.5 MPa it pushes 402 N and pulls 345 N. At 0.7 MPa it pushes 563 N and pulls 483 N. The theoretical max is 82 kgf at 1.0 MPa. The air port is G1/8.
The nominal 300 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke by up to 30 mm on site, yielding a usable range of 270-300 mm. The retract end remains fixed.
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