
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X800-50 is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 800mm 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 aluminium extruded barrel contains no external tie rods, and the G1/2 port feeds a 32 mm piston rod with an M26x1.5 thread.
The -50 code defines an external stop screw that lets you shorten the extend stroke on site by up to 50 mm, giving a usable forward travel of 750 to 800 mm while the retract end remains fixed. You can fine-tune the end position without physically swapping the cylinder, and the 33 mm adjustable air cushions at each end absorb impact energy. Note this specific SKU lacks a magnet and cannot accept CMSE or DMSE sensors; adding the -S variant enables that switching capability.
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X800-50 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 800 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). |
| ×800 | 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.
Uses the 50 mm extend window to fine-tune the pusher end position precisely against varying empty pallet stacks without changing the main 800 mm travel.
Raises and lowers mezzanine lift gates, using the on-site adjuster to set exact upper clearance limits while safely moving loads near the 200 kg vertical threshold.
The integrated -50 mm adjuster is ideal for sharing a single spare across multiple stroke variants or dialing in final end positions on-site without machining. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2 brackets. Because the 800 mm stroke is long, always support the rod against side loads with an external guide to prevent bending. Remember that a standard cylinder drifts on air loss; use an external rod lock or pilot-operated check valve if the load must be held.
Quick checklist
The theoretical maximum force is 801 kgf at 1.0 MPa. The air port is G1/2.
The nominal 800 mm stroke is the maximum travel. The external -50 adjuster is a stop screw that lets you shorten the extend stroke on site by up to 50 mm, yielding a usable forward travel of 750 to 800 mm. The retract end is fixed, and this mechanism sets end position rather than holding the load.
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