
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X700-50S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 700mm 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 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder is built for on-site stroke tuning. The external adjuster lets you shorten the extend stroke by up to 50 mm, giving a usable range of 650-700 mm, while the retract end remains fixed. It is a double-acting single-rod actuator with a hard-anodized aluminum barrel, making it shorter and more compact than a same-bore ISO 15552 cylinder.
This SKU includes the -S magnet for CMSE/DMSE sensors that drop directly into the side grooves. It handles a safe working load of about 377 N, which translates to lifting roughly 32 kg vertically with a 2:1 margin. The G1/4 port feeds the 20.5 mm adjustable air cushions at both ends. Note that the cushion only decelerates the piston near stroke end; use an external rod lock or pilot-operated check valve if you need to hold a load on air loss.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X700-50S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 700 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| Rod thread | M14×1.5 |
| 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×700 | 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.
Adjusts the extend stop by up to 50 mm on-site to align pusher plates without remounting the actuator.
Lifts roughly 32 kg vertically and uses the external adjuster to set precise drop heights for varying package sizes.
Uses the built-in magnet with CMSE/DMSE switches to confirm pressing depth, with a 50 mm window for job changes.
When sizing, the 32 mm bore offers a lighter 402 N push at 0.5 MPa, while the 50 mm bore jumps to 982 N if you need more force. The JSIJ series supports Basic, FA, LB, TC, TCM1, and TCM2 mounts. The -50 mm adjustable window is ideal for sharing a spare across stroke variants or fine-tuning the end position without remounting the cylinder. Because this is a 700 mm stroke, you must support the load with external guides to prevent rod bending and side-load damage. The built-in magnet allows precise position sensing.
Quick checklist
At 0.5 MPa it pushes 628 N and pulls 528 N. At 0.7 MPa it pushes 879 N and pulls 739 N. The theoretical maximum force is 128 kgf at 1.0 MPa. This 40 mm bore cylinder uses a G1/4 air port.
The nominal 700 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke on-site by up to 50 mm, yielding a usable extend range of 650-700 mm. The retract end is fixed, and this stop sets the end position rather than locking the load.
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