
The AirTAC JSID Double Rod Cylinder JSID40X900S is a genuine double acting, double rod JIS-standard air cylinder with a Ø40mm bore and 900mm 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 528 N of thrust in both directions at 0.5 MPa, this JIS double-rod profile cylinder uses a single piston with a rod exiting each cover. The symmetric layout prevents rotation and provides a stable load path. Because the hard-anodized aluminum extrusion omits tie rods entirely, the overall body is noticeably shorter than an ISO 15552 cylinder of the same 40 mm bore.
This -S variant carries a built-in piston magnet for CMSE/DMSE switches in its side grooves. With a 900 mm stroke, you must support the load with external guides to prevent rod bending. The G1/4 port feeds the chambers, and the adjustable air cushions decelerate the motion at each end.
| Model | Airtac JSID Double Rod Cylinder JSID40X900S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 900 mm |
| Acting type | Double acting, double rod |
| Port size | G1/4 |
| Rod thread | M14×1.5 |
| 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 | 528 N | 528 N |
| 0.7 MPa | 739 N | 739 N |
| Max (@1.0 MPa) | 108 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). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×900 | 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 opposing pusher arms on a conveyor line simultaneously, ensuring parallel material transfer without skewing.
Actuates two matching tool heads from a single piston, keeping cutting forces balanced and preventing rotational twist.
Lifts and lowers a 27 kg workpiece platform with equal force both ways, using the extended rear rod for cam tracking.
When sizing this double-rod unit, the 40 mm bore sits between the 32 mm option (345 N both ways) and the 50 mm option (825 N both ways). Choose the double-rod configuration when your machine needs anti-rotation guidance, twin tooling driven from both ends, or a sensor cam on the back side. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. The -S magnet allows electronic or reed position sensing. Because the stroke is 900 mm, always pair the cylinder with an external linear guide to absorb side loads and prevent rod bending.
Quick checklist
The force is equal in both directions because of the double-rod design. It provides 528 N at 0.5 MPa and 739 N at 0.7 MPa, with a theoretical maximum of 108 kgf at 1.0 MPa. The air port size is G1/4.
No, a plain double-rod cylinder will drift if air is lost or the valve is centered. The adjustable air cushions only decelerate the piston near the stroke ends and do not act as a brake. For load holding, you must add an external rod lock or a pilot-operated check valve.
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