
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-10 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 350mm 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.
Generating 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder brings compact air power to long-stroke tasks. The extruded hard-anodized aluminium barrel makes the body shorter than a same-bore ISO 15552 unit, saving valuable machine space.
A built-in external adjuster provides a 10 mm on-site extend-shortening window, letting you fine-tune the end position from 340 to 350 mm without swapping the cylinder. It handles a safe working load of about 377 N, which means you can vertically lift roughly 32 kg with a 2:1 safety margin. Pneumatic connections use a G1/4 port, and the retract end remains fixed. Note that this SKU lacks a magnet, so it cannot take CMSE or DMSE sensors.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X350-10 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 350 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). |
| ×350 | 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 340 to 350 mm extend endpoint on a gauging station without machining new hard stops.
Shorten the extend stroke by 10 mm on-site to perfectly align a diverter gate for changing box sizes.
Lift a 32 kg payload using the 40 mm bore, then use the adjuster to set a precise upper travel limit.
When sizing this unit, the adjacent 32 mm bore offers 402 N push at 0.5 MPa for lighter duties, while the 50 mm bore steps up to 982 N if your load demands more power. The 10 mm adjustable window is highly useful for synchronizing end positions across multiple actuators or creating a shared spare for slightly different stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because the stroke is 350 mm, you must use external guides to prevent rod bending and manage side loads. This non-magnet version cannot support 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. The air port is G1/4.
The 350 mm nominal stroke is the maximum length. The external adjuster lets you shorten the extend stroke by up to 10 mm on-site, giving a usable range of 340 to 350 mm. The retract end is fixed. This mechanism sets the end position and does not lock the load; use an external rod lock or pilot-operated check valve to hold a load without live air.
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