
The AirTAC Airtac JSID Double Rod Cylinder JSID63X300S is a genuine double acting, double rod JIS-standard air cylinder with a Ø63mm bore and 300mm stroke, G3/8 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 1402 N of thrust in both directions at 0.5 MPa, this 63 mm bore double-rod actuator uses its symmetric piston area to eliminate push-pull force mismatch. The hard-anodized aluminium profile barrel keeps the overall body shorter than a same-bore ISO 15552 unit, saving valuable machine space. A rod exits both ends, which is ideal for driving two tools simultaneously or mounting a rear sensor cam.
Fitted with a piston magnet for CMSE/DMSE switches, the -S variant allows precise end-of-stroke detection via side-groove sensors. Operating through a G3/8 port, it handles a safe working load of about 841 N, translating to a vertical lift capacity of roughly 71 kg with a 2:1 safety margin. Adjustable 29 mm air cushions decelerate the piston at stroke ends, though an external rod lock is required to hold a load securely without live air.
| Model | Airtac JSID Double Rod Cylinder JSID63X300S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 300 mm |
| Acting type | Double acting, double rod |
| Port size | G3/8 |
| 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, 29 mm |
| Max standard stroke | Up to 1500 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 | 1402 N | 1402 N |
| 0.7 MPa | 1962 N | 1962 N |
| Max (@1.0 MPa) | 318 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). |
|---|---|
| 63 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×300 | 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 from one piston, ensuring perfectly synchronized cutting cycles with equal 1402 N force on both faces.
Uses the dual-rod design to push a part forward on the extend stroke while retracting an empty fixture backward, optimizing cycle time on a 300 mm travel path.
Lifts roughly 71 kg of vertical load with a 2:1 margin, relying on the inherent torsional stiffness of the through-rod design to prevent platform twisting.
Sizing this actuator requires checking both neighbours: the 50 mm bore offers 825 N each way at 0.5 MPa, while the 80 mm bore provides 2268 N. The 63 mm bore sits perfectly in between, delivering 1402 N for applications needing substantial symmetric force. Choose a double-rod configuration when your mechanism demands anti-rotation stability, symmetric load distribution, or twin tooling operations. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because this unit has a 300 mm stroke, external guides are strongly recommended to prevent rod bending and manage side loads over the extended travel.
Quick checklist
Because the rod passes through both covers, force is equal in both directions: 1402 N at 0.5 MPa and 1962 N at 0.7 MPa. The theoretical maximum is 286 kgf at 1.0 MPa. This 63 mm bore unit uses a G3/8 port and features a 29 mm adjustable air cushion at each end.
The -S suffix indicates a built-in magnet for CMSE/DMSE switches that mount directly into the barrel grooves. However, the air cushions only decelerate the piston near stroke ends; they do not lock the position. To hold a vertical load safely without live air pressure, you must install an external rod lock or a pilot-operated check valve.
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