
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X225-40S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 225mm 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 extruded hard-anodized aluminum barrel omits tie rods entirely, making the body shorter and more compact than a same-bore ISO 15552 unit. A G3/8 port feeds the double-acting double rod, and the integrated -S magnet allows CMSE/DMSE sensors to drop directly into the side grooves for precise position detection.
The -40 code means an external adjuster can shorten the 225 mm extend stroke on-site by up to 40 mm, yielding a usable 185-225 mm range without swapping the cylinder. This fine-tunes the end position perfectly. Note that the adjustable stop sets position only; the air cushion decelerates but does not lock, so fit an external rod lock or pilot-operated check valve if you need to hold a load on air loss.
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X225-40S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 225 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). |
| ×225 | 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 extend stop on a machining fixture using the 40 mm adjuster window, avoiding the need to machine custom spacers for every part variation.
Pushes parts onto an indexing belt, where the external screw lets operators shorten the stroke by up to 40 mm to accommodate different product lengths on the fly.
Lifts a 79 kg palletized component using the 63 mm bore, relying on the JIS compact profile to fit within a narrow elevator shaft while allowing end-position trimming.
The adjustable-stroke window is ideal when you need to tune the extend end-position on-site or want a single spare cylinder that covers 185-225 mm variants. Mounting options include FA, LB, TC, TCM1, and TCM2. The -S suffix means a magnet is already fitted for CMSE/DMSE switches. Because the stroke is 225 mm, ensure adequate side-load guidance to prevent rod binding.
Quick checklist
The theoretical maximum force is 318 kgf at 1.0 MPa. It uses a G3/8 port and a 20 mm rod with an M18x1.5 thread.
The 225 mm nominal stroke is the maximum extend length. An external stop screw lets you shorten the extend stroke on-site by up to 40 mm, giving a usable range of 185-225 mm. The retract end remains fixed. This mechanism sets the end position and does not lock the load.
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