The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X100-40 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 100mm stroke, G1/4 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.
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder is built with an extruded hard-anodized aluminum barrel and no exposed tie rods. It is noticeably shorter and more compact than an ISO 15552 cylinder of the same bore. The G1/4 port and M18x1.5 rod thread keep pneumatic and mounting integration straightforward.
The external adjuster lets you shorten the extend stroke on site by up to 40 mm, dropping the usable forward travel from the 100 mm maximum down to 60 mm without changing the cylinder body. The retract end remains fixed. This on-site end-position tuning handles about 589 N of real work safely, which means lifting roughly 50 kg vertically with a 2:1 margin. Note that this plain SKU lacks a magnet and cannot take a CMSE or DMSE sensor.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X100-40 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 100 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| Rod thread | M18×1.5 |
| 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, 20.5 mm |
| Max standard stroke | Up to 1200 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 | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×100 | 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 extend stop on a machining fixture by shortening the 100 mm stroke up to 40 mm on site without swapping cylinders.
Adjust the push-off distance on a transfer line in 50 kg load applications, using the external screw to match varying product widths.
Fit a short JIS profile body into a tight packaging machine cell where an ISO 15552 cylinder of the same 50 mm bore would be too long.
When sizing this unit, the neighboring 40 mm bore yields 628 N push at 0.5 MPa, while the larger 63 mm bore provides 1559 N, letting you step up or down to match your exact load. The -40 mm adjuster window is ideal for fine-tuning the extend end position on the machine or keeping one shared spare across slightly different stroke variants. JSIJ mounting choices include Basic, FA, LB, TC, TCM1, and TCM2. Because this is a 100 mm stroke, side loads are minimal, but for any stroke 300 mm or longer you should guide the rod end to prevent binding. Add the -S suffix if you need a magnet for CMSE/DMSE position sensing.
Quick checklist
At 0.5 MPa it pushes 982 N and pulls 825 N. At 0.7 MPa push is 1374 N and pull is 1154 N. The theoretical max force is 200 kgf at 1.0 MPa. It uses a G1/4 port, a 20 mm rod, an M18x1.5 rod thread, and 20.5 mm adjustable air cushions at both ends. Operating speed is 30-800 mm/s.
The nominal 100 mm stroke is the maximum forward travel. The external adjuster lets you shorten the extend stroke on site by up to 40 mm, giving a usable extend range of 60 to 100 mm. The retract end is fixed. This mechanism only sets the end position; it does not lock the load, so use an external rod lock or pilot-operated check valve if you need to hold a load against air loss.
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