
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X450-40S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 450mm 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 brings compact power to long-reach tasks. The hard-anodized aluminum barrel omits external rods, making the overall body shorter than a same-bore ISO 15552 unit. It handles about 589 N of real work safely, which translates to lifting roughly 50 kg vertically with a 2:1 margin.
The -40 code means an external adjuster can shorten the 450 mm extend stroke on-site down to 410 mm, letting you fine-tune the end position without swapping the cylinder. This double-acting single-rod actuator uses a G1/4 port and includes a built-in magnet for CMSE/DMSE sensors. Note that the retract end remains fixed, and the adjustable cushion only decelerates the load.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X450-40S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 450 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). |
| ×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 extend stop from 410 to 450 mm to deflect packages of varying sizes on a sorting line without changing hardware.
Adjust the external stop screw on-site to set precise 50 mm bore pressing depths for different material thicknesses.
Use the 450 mm stroke to push bins between zones, relying on the compact JIS profile to save valuable machine footprint.
When sizing, the 63 mm bore steps up to 1559 N push at 0.5 MPa, while the 40 mm bore drops to 628 N, so 50 mm is ideal for mid-range force. The 40 mm adjustable window is perfect for sharing one spare across multiple stroke variants or dialing in exact end positions on-site. Mounting options include FA, LB, TC, TCM1, and TCM2. Because the 450 mm stroke is long, always use an external guide to prevent rod bending and side loads. The -S suffix means the side grooves are ready for CMSE/DMSE reed or electronic switches.
Quick checklist
At 0.5 MPa it pushes 982 N and pulls 825 N. At 0.7 MPa it pushes 1374 N and pulls 1154 N. The theoretical maximum force is 200 kgf at 1.0 MPa. It uses a G1/4 port and a 20 mm rod with an M18x1.5 thread.
The 450 mm nominal stroke is the maximum. The external adjuster lets you shorten the extend stroke by up to 40 mm on-site, giving a usable range of 410 to 450 mm. The retract end is fixed. This mechanism sets the end position and does not lock the load; use a pilot-operated check valve for holding.
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