
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X150-20S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 150mm 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.
The hard-anodized aluminum barrel makes it shorter and more compact than a same-bore ISO 15552 unit. A G3/8 port feeds the double-acting double rod.
The external stop screw lets you trim the extend stroke by up to 20 mm, giving a usable range of 130 to 150 mm without changing the cylinder itself. The retract end remains fixed. This mechanism sets the end position but does not lock the load. Because the -S suffix denotes a piston magnet, you can fit CMSE or DMSE sensors directly into the side grooves for position detection.
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X150-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 150 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| 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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1402 N | 1402 N |
| 0.7 MPa | 1962 N | 1962 N |
| Max (@1.0 MPa) | 286 kgf | |
JSIJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative).
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 63 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×150 | 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.
Dial in the exact 130 to 150 mm extend position on-site to seat bearings without bottoming out the tooling.
Adjust the stop finger length by 20 mm to accommodate different product sizes on a shared line.
The 63 mm bore hits a versatile middle ground for medium-duty tasks. The 20 mm adjuster is ideal for fine-tuning end positions on-site or sharing a single spare across multiple stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. For any stroke at or over 300 mm, always use a guide rail to prevent side-load damage to the piston rod.
Quick checklist
At 0.5 MPa it pushes 1559 N and pulls 1402 N. At 0.7 MPa it pushes 2182 N and pulls 1962 N. The theoretical maximum force is 318 kgf at 1.0 MPa. It uses a G3/8 port and a 20 mm adjustable air cushion at each end.
The nominal stroke is 150 mm, which is the maximum extend length. An external stop screw lets you shorten the extend stroke on-site by up to 20 mm, yielding a usable range of 130 to 150 mm. The retract end is fixed, and this stop only sets the end position rather than holding the load.
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