
The AirTAC Airtac JSI Series Standard Cylinder JSI50X60S is a genuine double acting JIS-standard air cylinder with a Ø50mm bore and 60mm 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 equivalent ISO 15552 unit. The 50 mm bore uses a G1/4 port and a 20 mm hard-chrome plated rod. Its extruded hard-anodized aluminum barrel lacks external rods to resist wear, while the two-way piston seal retains grease for a long, low-friction service life.
Because the code includes the -S suffix, a built-in piston magnet is fitted so CMSE or DMSE sensors can drop directly into the side grooves for position detection. For real-world sizing, plan for roughly 589 N of actual work at 0.5 MPa, which translates to lifting about 50 kg vertically with a 2:1 safety margin. The unit operates at 30-800 mm/s, and the adjustable air cushions at both ends decelerate the piston smoothly at stroke ends.
| Model | Airtac JSI Series Standard Cylinder JSI50X60S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 60 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). |
| ×60 | 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.
Provides the 982 N push force needed to deflect medium-weight cartons on a distribution conveyor at speeds up to 800 mm/s.
Raises and lowers a 50 kg pallet stopper gate using the integrated -S magnet to confirm the gate is fully open via CMSE sensors.
Secures aluminum extrusion housings during machining operations, utilizing the 20.5 mm adjustable cushions to prevent impact damage.
When sizing this 50 mm bore, stepping down to a 40 mm version drops the 0.5 MPa push force to 628 N, while moving up to a 63 mm bore increases it to 1559 N. If your application must hold a load vertically when air is removed or the valve is centered, note that this standard cylinder will drift; the end cushions only decelerate motion and do not act as a brake. You will need an external rod lock or a pilot-operated check valve for secure holding. The 60 mm stroke is well below the 300 mm threshold, so side-load bending stress is minimal.
Quick checklist
This 50 mm bore cylinder features a G1/4 air port and an M18x1.5 rod thread. It generates 982 N push and 825 N pull at 0.5 MPa, 1374 N push and 1154 N pull at 0.7 MPa, with a theoretical maximum of 200 kgf at 1.0 MPa.
It is engineered to JIS standards and is physically shorter and more compact than an ISO 15552 cylinder of the same 50 mm bore, saving machine footprint without sacrificing the 982 N output. It is not dimensionally interchangeable with ISO 15552.
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