
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X225-40S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 225mm stroke, G1/2 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 profile barrel leaves out external rods, making the unit noticeably shorter than a same-bore ISO 15552 cylinder. Air enters through a G1/2 port, driving a 32 mm piston rod with an M26x1.5 thread.
The external stop screw lets you trim the extend stroke by up to 40 mm on site, dropping the usable travel from the 225 mm maximum down to 185 mm without swapping the cylinder. Because the -S suffix adds a piston magnet, you can fit CMSE or DMSE reed and electronic switches directly into the side grooves.
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X225-40S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 225 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | G1/2 |
| Rod thread | M26×1.5 |
| 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, 33 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 | 3525 N | 3525 N |
| 0.7 MPa | 4935 N | 4935 N |
| Max (@1.0 MPa) | 719 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). |
|---|---|
| 100 | 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 185 to 225 mm extend reach for seating bearings, letting the external stop absorb final position variance without remounting the actuator.
The adjustable-stroke window shines when you need to fine-tune an end position after a fixture change, or when you want one shared spare across several stroke variants. Mounting options cover Basic, FA, LB, TC, TCM1, and TCM2. The built-in magnet supports CMSE/DMSE sensors. For any stroke at or over 300 mm, always guide the load to prevent side-load damage.
Quick checklist
At 0.5 MPa it pushes 3927 N and pulls 3574 N. At 0.7 MPa it pushes 5497 N and pulls 5003 N. The theoretical max is 801 kgf at 1.0 MPa. It uses a G1/2 port, a 32 mm rod with an M26x1.5 thread, and has 33 mm adjustable air cushions at both ends.
The nominal 225 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke by up to 40 mm on site, giving a usable range of 185 to 225 mm. The retract end stays fixed. Note that a plain cylinder drifts on air loss, so use an external rod lock or pilot-operated check valve to hold a load.
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