
The AirTAC Airtac JSI Series Standard Cylinder JSI40X1500S is a genuine double acting JIS-standard air cylinder with a Ø40mm bore and 1500mm 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 double-acting 40 mm bore cylinder handles long 1500 mm reaches. Because it is a JIS-standard profile unit, it is shorter and more compact than an ISO 15552 cylinder of the same bore, saving valuable machine space. The extruded hard-anodized aluminum barrel omits external rods to resist wear, while the two-way piston seal retains grease for a long, low-friction service life.
Since 1500 mm exceeds the 1200 mm standard maximum for this bore, this is a non-standard, made-to-order stroke. The -S suffix means a piston magnet is built in, allowing CMSE or DMSE switches to drop directly into the side grooves for position sensing. Plan for roughly 377 N of real work at 0.5 MPa, which equates to lifting about 32 kg vertically with a 2:1 safety margin. The air port is G1/4.
| Model | Airtac JSI Series Standard Cylinder JSI40X1500S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 1500 mm |
| Acting type | Double acting |
| 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.
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×1500 | 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 packages between distant conveyor sections on packaging lines, utilizing the full 1500 mm stroke to bridge wide machine gaps.
Actuates a long-throw diverter arm in automated small-parts warehousing, moving totes with the 32 kg vertical lift capacity in mind.
Shifts heavy fabric beams across a wide loom framework, where the compact JIS profile saves floor space and the G1/4 port delivers steady airflow.
For sizing context, a smaller JSI32 bore yields 402 N of push at 0.5 MPa, whereas stepping up to a JSI50 bore increases that to 982 N. When air is lost or the valve is centered, the piston will drift; the adjustable air cushions only decelerate the rod near the stroke ends and do not act as a brake. To hold a load securely, add an external rod lock or a pilot-operated check valve. The included -S magnet pairs perfectly with CMSE or DMSE sensors.
At 1500 mm, this non-standard stroke requires careful attention to side loads. Long extension distances increase the risk of rod bending, so mounting this unit with an external guide or linear rail is strongly recommended to prevent premature seal wear and binding.
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. It features a 40 mm bore, a 16 mm rod, an M14x1.5 rod thread, a G1/4 port, and adjustable air cushions of 20.5 mm at both ends.
The JSI is a JIS-standard profile cylinder, making it shorter and more compact than an ISO 15552 cylinder of the same 40 mm bore. It uses an extruded hard-anodized aluminum barrel without external rods. Because this specific unit has the -S suffix, it includes a magnet for CMSE or DMSE sensors.
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