
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X100-75S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 100mm 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 -75S designation equips the piston with a built-in magnet for CMSE/DMSE sensors that drop directly into the side grooves, while the G3/8 port handles the air flow.
An external adjuster lets you shorten the extend stroke on-site by up to 75 mm, dropping the usable forward travel from the 100 mm maximum down to 25 mm without swapping the cylinder; the retract end remains fixed. The 29 mm adjustable air cushions at each end absorb kinetic energy near the stroke ends, though they only decelerate the piston and do not hold the load if air pressure drops.
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X100-75S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 100 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). |
| ×100 | 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 25 to 100 mm extend position on-site to clamp parts of varying heights without re-engineering the fixture.
Act as a lane diverter on a packaging line, using the external adjuster to shorten the extend stroke when product sizes change.
The adjustable stroke shines when you need to fine-tune the extend end position on the machine or standardize a single spare across multiple stroke variants. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because this SKU includes the -S magnet, you can fit CMSE/DMSE reed or electronic switches directly into the profile grooves. For any stroke length at or above 300 mm, always guide the load to prevent side-load damage to the rod seals.
Quick checklist
The theoretical maximum force is 318 kgf at 1.0 MPa. This 63 mm bore cylinder uses a G3/8 air port and features a 20 mm piston rod with an M18x1.5 rod-end thread.
The nominal stroke is 100 mm, which is the maximum forward travel. The external adjuster lets you shorten the extend stroke on-site by up to 75 mm, giving a usable extend range of 25 to 100 mm. The retract end is fixed, and the adjuster sets the end position but does not lock the load.
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