
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X500-20 is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 500mm 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 body omits external rods, making it shorter and more compact than a same-bore ISO 15552 unit. Air connects via a G1/2 port, driving a 32 mm rod with an M26x1.5 thread.
The -20 code defines a 20 mm external adjuster window that shortens the extend stroke on-site, giving a usable range of 480 to 500 mm while the retract end remains fixed. You can fine-tune the end position without physically swapping the cylinder. Adjustable 33 mm air cushions decelerate the piston at both extremes, but a plain cylinder drifts on air loss—the cushion only slows movement, so fit an external rod lock or pilot-operated check valve to hold a suspended load.
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X500-20 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 500 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). |
| ×500 | 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 480 to 500 mm extend reach on a heavy stamping line without machining new spacers or changing the cylinder.
Raise a 200 kg materials gate vertically, relying on the 33 mm cushions to soften the end-of-stroke impact safely.
When sizing this 100 mm model, stepping down to an 80 mm bore drops the 0.5 MPa push force to 2513 N, while stepping up to 125 mm raises it to 6136 N. The adjustable stroke is ideal for sharing a single spare across multiple stroke variants or dialing in final end positions on-site. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because this is a 500 mm stroke, always support the load with an external guide to prevent rod bending and excessive side loading. Note that this specific SKU lacks a magnet and cannot accept CMSE or DMSE sensors; choose the -S variant if you need position detection.
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 rod is 32 mm, and it runs at 30-800 mm/s.
The -20 means an external stop screw lets you shorten the extend stroke by up to 20 mm on-site. The nominal 500 mm stroke is the maximum, so the usable extend range is 480 to 500 mm. The retract end is fixed, and this stop mechanism is not a load lock.
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