
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X900-50 is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 900mm 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 omits tie rods, making the body shorter and more compact than a same-bore ISO 15552 unit.
The -50 code defines an external adjuster window that lets you shorten the extend stroke on-site by up to 50 mm, giving a usable extend range of 850-900 mm while the retract end stays fixed. You can fine-tune the end position without physically changing the cylinder. This SKU has no magnet and cannot take a CMSE/DMSE sensor; add the -S variant for position detection. It uses a G1/2 port, an M26x1.5 rod thread, and 33 mm adjustable air cushions at both ends.
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X900-50 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 900 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). |
| ×900 | 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.
Pushes loaded pallets along a 900 mm conveyor line, using the 50 mm adjuster to dial in the exact push-off distance without swapping actuators.
Ejects heavy formed parts from a press bed, using the adjustable stroke to compensate for varying material thickness and tooling depths.
The 50 mm adjustable window is ideal for sharing one spare across multiple stroke variants or finalizing end positions on-site. JSIJ mounting options include FA, LB, TC, TCM1, and TCM2. Because the stroke is 900 mm, you must use external guides to prevent rod bending and manage side loads. Note that a plain cylinder drifts on air loss; use an external rod lock or pilot-operated check valve for held loads.
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. This 100 mm bore model uses a G1/2 port, an M26x1.5 rod thread, and 33 mm adjustable air cushions.
The nominal 900 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke on-site by up to 50 mm, providing a usable extend range of 850-900 mm. The retract end is fixed. This mechanism sets the end position and does not lock the load.
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