
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-10 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 400mm 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 keeps your installation footprint tight. The extruded hard-anodized aluminium barrel makes it shorter and more compact than a same-bore ISO 15552 unit. It handles about 377 N of real work safely, which means roughly 32 kg lifted vertically with a 2:1 margin.
A built-in external adjuster lets you trim the extend stroke by up to 10 mm on site, giving a usable 390-400 mm end-position window without swapping the cylinder. The retract end remains fixed, and the G1/4 port handles 30-800 mm/s speeds. Note this SKU lacks a magnet, so it cannot take CMSE or DMSE sensors.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X400-10 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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). |
| ×400 | 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.
Fine-tune the 400 mm extend stroke by up to 10 mm on site to perfectly align a diverter gate without machining new mounts.
The shorter JIS profile barrel saves valuable axial space in tight packaging lines while delivering 628 N of push force.
Dial in the exact stop position for varying carton sizes using the external adjuster, keeping the retract position fixed.
For medium-duty tasks, the 40 mm bore offers 628 N push and 528 N pull at 0.5 MPa; if you need more power step up to the 50 mm bore (982 N push), or drop to the 32 mm bore (402 N push) for lighter loads. The 10 mm extend-shortening window is ideal for sharing one spare across slight stroke variants or fine-tuning an end position. JSIJ mounting options include FA, LB, TC, TCM1, and TCM2. Because the stroke is 400 mm, always use an external guide rail to prevent rod bending under side loads. As a non-magnetized SKU, it cannot support position sensing.
Quick checklist
At 0.5 MPa it provides 628 N push and 528 N pull; at 0.7 MPa it provides 879 N push and 739 N pull. The theoretical maximum force is 128 kgf at 1.0 MPa. This 40 mm bore model uses a G1/4 air port and features a 16 mm rod with an M14x1.5 thread.
The external stop screw lets you shorten the extend stroke by up to 10 mm on site, giving a usable range of 390-400 mm. The nominal 400 mm stroke is the maximum, and the retract end is fixed. This mechanism only sets the end position; it does not lock the load, so you need an external rod lock or pilot-operated check valve to hold a load on air loss.
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