
The AirTAC Airtac JSI Series Standard Cylinder JSI50X560S is a genuine double acting JIS-standard air cylinder with a Ø50mm bore and 560mm 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 982 N of push force at 0.5 MPa, this double-acting JIS-standard profile cylinder saves valuable machine space by being noticeably shorter than an ISO 15552 cylinder of the same 50 mm bore. The extruded hard-anodized aluminum barrel omits external rods to resist wear, while a two-way piston seal retains grease for a long, low-friction service life. Because this SKU includes the -S magnet, CMSE or DMSE switches drop directly into the side grooves for position sensing.
For real-world sizing, plan for about 589 N of actual work at 0.5 MPa, which safely lifts about 50 kg vertically with a 2:1 margin. The unit features a 20 mm piston rod, an M18x1.5 rod-end thread, and a G1/4 air port. Its 560 mm stroke is well within the 1200 mm standard limit, though at this extended length external guides are recommended to prevent rod bending under side loads.
| Model | Airtac JSI Series Standard Cylinder JSI50X560S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 560 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M18×1.5 |
| 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 | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×560 | 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 medium-weight packaging cartons across a transfer deck using 982 N of thrust at 0.5 MPa, with the 560 mm stroke covering wide belt widths.
Raises 50 kg material totes vertically in an automated storage system, relying on the 2:1 safety margin for stable elevation.
Actuates a diverter gate on a sorting line, where the compact JIS profile saves space and the -S magnet confirms gate position.
When sizing this 50 mm bore, stepping down to a 40 mm bore drops the 0.5 MPa push force to 628 N, while stepping up to a 63 mm bore increases it to 1559 N. Choose this 50 mm option to efficiently lift or move loads up to roughly 50 kg. With a 560 mm stroke, always use an external guide rail to absorb side loads and prevent rod bending, as the piston rod alone should not support lateral forces.
Remember that air pressure alone does not secure the load; if air is lost or the valve is centered, the piston will drift because the adjustable air cushions only decelerate the rod near the stroke ends. To hold a load vertically, install an external rod lock or a pilot-operated check valve. The built-in -S magnet pairs directly with CMSE and DMSE sensors for end-of-stroke confirmation.
Quick checklist
The 50 mm bore provides 982 N push and 825 N pull at 0.5 MPa, increasing to 1374 N push and 1154 N pull at 0.7 MPa. The theoretical maximum force is 200 kgf at 1.0 MPa. This model uses a G1/4 air port and operates at speeds of 30-800 mm/s.
The JIS-standard extruded profile is shorter and more compact than an ISO 15552 cylinder of the same bore, saving space on tight machines. The -S designation means it has a built-in piston magnet, allowing CMSE or DMSE electronic switches to be mounted directly into the side grooves for position detection.
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