
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X500-40S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 500mm 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 features a built-in magnet for position sensing. The hard-anodized aluminum barrel keeps the overall body shorter and more compact than a same-bore ISO 15552 unit. It handles about 377 N of real work safely, which means lifting roughly 32 kg vertically with a 2:1 margin.
The -40 code means an external stop screw lets you shorten the extend stroke on-site by up to 40 mm, giving a usable range of 460 to 500 mm without changing the hardware. Retract remains fixed. Air connects via a G1/4 port, and the -S suffix equips the side grooves for CMSE or DMSE reed and electronic switches.
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X500-40S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 500 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). |
| ×500 | 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.
Pushes parts off a belt at 500 mm, with the 40 mm window trimming the final stop to match varying pallet widths.
Lifts a 32 kg tote and uses the external adjuster to set the exact raise height without re-specifying the whole cylinder.
Extends 460 to 500 mm to fold carton flaps, allowing operators to dial in the crease position on the fly.
This 40 mm bore sits neatly between the lighter 32 mm and the stronger 50 mm options, pushing 628 N versus 402 N or 982 N at 0.5 MPa. The adjustable window shines when you need to fine-tune a 460 to 500 mm end position on-site or standardize one spare across several stroke variants. Mounting choices include FA, LB, TC, TCM1, and TCM2. Because the stroke is 500 mm, always use an external guide to prevent rod bending and side loads. Note that a plain cylinder drifts on air loss; fit an external rod lock or pilot-operated check valve if the load must hold.
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 is 128 kgf at 1.0 MPa. The air port is G1/4, the rod is 16 mm with an M14x1.5 thread, and the adjustable cushion is 20.5 mm at each end.
The 500 mm nominal stroke is the maximum. An external stop screw lets you shorten the extend stroke by up to 40 mm on-site, yielding a usable range of 460 to 500 mm. The retract end is fixed. This stop sets the end position and does not lock the load.
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