
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X450-30S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 450mm 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 hard-anodized aluminum extruded barrel skips external rods, and the G1/2 port matches the bore's high flow needs. A built-in magnet (-S) allows CMSE or DMSE switches to drop directly into the side sensor grooves for precise position detection.
The -30 code means an external stop screw lets you shorten the extend stroke on-site by up to 30 mm, giving a usable range of 420-450 mm without changing the cylinder itself; the retract end remains fixed. This adjuster is strictly for fine-tuning the end position, not for locking the load. Note that on air loss the piston drifts, as the adjustable air cushions only decelerate near the stroke ends rather than holding the load.
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X450-30S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 450 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). |
| ×450 | 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 420-450 mm extend endpoint on-site to trim material thickness in a forming press without swapping actuators.
When sizing this 100 mm bore, stepping down to an 80 mm unit drops the 0.5 MPa push force to 2513 N, while stepping up to a 125 mm bore raises it to 6136 N. The adjustable stroke is ideal for sharing a single spare across multiple stroke variants or dialing in end positions on-site. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because the stroke is 450 mm, always support the load with external guides to prevent rod bending and side-load damage. The -S magnet enables CMSE/DMSE sensors for position feedback.
Quick checklist
The theoretical maximum force is 801 kgf at 1.0 MPa. This 100 mm bore cylinder uses a G1/2 port.
The nominal 450 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 420-450 mm. The retract end is fixed, and this mechanism sets end position rather than holding the load.
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