
The AirTAC Airtac JSID Double Rod Cylinder JSID50X75S is a genuine double acting, double rod JIS-standard air cylinder with a Ø50mm bore and 75mm 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 equal force in both directions at 0.5 MPa, this double-acting 50 mm bore cylinder uses a twin-rod layout to eliminate rotational twist. The hard-anodized extruded aluminium profile keeps the overall body shorter than a same-bore ISO 15552 unit. A rod exits each end to drive opposing tooling or mount a sensor cam, maintaining a symmetric load path.
The G1/4 port feeds a piston that yields a safe working load of roughly 495 N, which translates to lifting about 42 kg vertically with a 2:1 margin. Because this SKU carries the -S suffix, it includes a piston magnet for CMSE/DMSE switches that drop directly into the barrel grooves. Adjustable air cushions at both ends decelerate the 75 mm stroke smoothly.
| Model | Airtac JSID Double Rod Cylinder JSID50X75S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 75 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). |
| ×75 | 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.
Simultaneously pushes and pulls two parallel workpieces from opposite ends with identical 825 N force.
Raises and lowers a 42 kg vertical payload using both rods to maintain a balanced, non-twisting load path.
Uses the rear rod extension as a mechanical cam to trigger external proximity sensors on the return cycle.
Size both ways against this 50 mm bore, which outputs 825 N each way at 0.5 MPa. Step down to the 40 mm bore for 528 N, or move up to the 63 mm bore for 1402 N when you need heavier equal push and pull. Choose this twin-rod format when your mechanism demands anti-rotation guidance, symmetric load distribution, or back-end sensing. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2 brackets. The -S magnet enables precise end-of-stroke detection. For any stroke at or over 300 mm, always support the load with an external guide to prevent side-load binding.
Quick checklist
Force is equal in both directions because the rod passes through both covers. It generates 825 N at 0.5 MPa and 1154 N at 0.7 MPa, with a theoretical maximum of 168 kgf at 1.0 MPa. The air port size is G1/4.
No, a plain double-rod cylinder drifts without live air, as the adjustable 20.5 mm cushions only decelerate the piston near stroke end. To hold a load securely, install an external rod lock or a pilot-operated check valve.
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