
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X175-75 is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 175mm 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 extrusion leaves no external tie rods, making the body noticeably shorter than a same-bore ISO 15552 unit.
The -75 code defines an external adjuster window that shortens the extend stroke on site by up to 75 mm, dropping the usable forward travel from the 175 mm maximum down to 100 mm without swapping the cylinder. You get a 20 mm rod, M18x1.5 rod thread, G3/8 porting, and 29 mm adjustable air cushions at both ends. Because this SKU lacks the -S suffix, it cannot accept a magnetic sensor; adding -S enables CMSE or DMSE switches.
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X175-75 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 175 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). |
| ×175 | 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 100 to 175 mm forward travel on-site to clamp castings of different heights without repositioning the fixture.
Shorten the extend stroke by up to 75 mm to accommodate varying package sizes on a packaging line while maintaining full retract.
Set the external stop screw to route items onto different conveyor lanes, tweaking the end position quickly during format changes.
Stepping down to a 50 mm bore drops the 0.5 MPa push force to 982 N, while moving up to an 80 mm bore raises it to 2513 N, so the 63 mm size sits in a strong middle ground. The 75 mm adjustable window is ideal when you need to fine-tune the extend end position on the floor or want one shared spare across multiple stroke variants. Mounting choices span Basic, FA, LB, TC, TCM1, and TCM2. For any stroke at or beyond 300 mm, guide the load externally to prevent side-load wear on the rod seals.
Quick checklist
At 0.5 MPa it pushes 1559 N and pulls 1402 N. At 0.7 MPa the push is 2182 N and the pull is 1962 N. The theoretical maximum force is 318 kgf at 1.0 MPa. It uses a G3/8 port, a 20 mm rod with an M18x1.5 thread, and 29 mm adjustable cushions.
The 175 mm nominal stroke is the maximum forward travel. The external adjuster lets you shorten the extend stroke on-site by up to 75 mm, giving a usable range of 100 to 175 mm. The retract end remains fixed. This stop only sets the end position; it does not lock the load, so use a pilot-operated check valve for holding.
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