
The AirTAC Airtac JSID Double Rod Cylinder JSID50X350 is a genuine double acting, double rod JIS-standard air cylinder with a Ø50mm 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.
Delivering 825 N of thrust in both directions at 0.5 MPa, this 50 mm bore double-rod cylinder uses a G1/4 air port and a 350 mm stroke. Because a rod exits both ends on a single piston, the pressure area stays identical each way, giving you perfectly symmetric push and pull force. This JIS profile build is notably shorter than a same-bore ISO 15552 unit, and the hard-anodized extruded aluminum barrel keeps the assembly light.
With 825 N available, you have a safe working load of about 495 N, which is roughly 42 kg lifted vertically with a 2:1 safety margin. The twin rods resist rotation and provide an excellent mounting point for a sensor cam or secondary tool. Note that this specific SKU lacks a magnet, so it cannot accept CMSE or DMSE switches without upgrading to an -S variant.
| Model | Airtac JSID Double Rod Cylinder JSID50X350 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 350 mm |
| Acting type | Double acting, double rod |
| 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 | Force (both ways) | — |
|---|---|---|
| 0.5 MPa | 825 N | 825 N |
| 0.7 MPa | 1155 N | 1155 N |
| Max (@1.0 MPa) | 200 kgf | |
Double-rod: the rod passes through both covers, so output force is equal in both directions.
| JSID | JIS-standard profile cylinder (double-rod type). |
|---|---|
| 50 | 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.
Drives two opposing machining heads simultaneously using the equal force from both rod ends to keep cycle times balanced.
Raises and lowers a guided lifting table where the dual rods prevent platform rotation and maintain a parallel load path.
Pushes a diverting blade from either side of a conveyor line, using the rear rod extension to trip a mechanical cam.
When sizing this actuator, look at the neighboring bores: the 40 mm delivers 528 N each way, while the 63 mm provides 1402 N. Choose the 50 mm bore when you need that 825 N symmetric output to drive two tools simultaneously or prevent twist on a guided load. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because the stroke is 350 mm, you must support the load with external guides to prevent rod bending and premature seal wear. Remember that this non-magnetic version cannot host position sensors.
Quick checklist
The force is equal in both directions at 825 N at 0.5 MPa and 1154 N at 0.7 MPa, with a theoretical max of 168 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa, and the G1/4 port feeds the 20 mm rod.
The air cushion only decelerates the piston near the stroke ends; it does not hold load on air loss. For vertical holding you need an external rod lock or pilot-operated check valve. Also, this non-S SKU lacks a magnet and cannot take CMSE or DMSE sensors.
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