
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X25-10S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 25mm 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 hard-anodized aluminum extruded barrel skips external rods entirely, keeping the body smooth. A built-in piston magnet (-S) lets you drop CMSE or DMSE reed and electronic switches directly into the side grooves for precise position detection.
The JSIJ100X25-10S uses an external stop screw to shorten the extend stroke on site by up to 10 mm, giving a usable forward travel of 15 to 25 mm while the retract end stays fixed. This lets you fine-tune the end position without swapping the cylinder. Pneumatic connections use a G1/2 port, and adjustable air cushions at both ends absorb the 33 mm cushion stroke to protect the mechanism.
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X25-10S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 25 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). |
| ×25 | 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.
Drives a 200 kg vertical pressing head, using the 10 mm adjuster to dial in the exact 15 to 25 mm crush depth on different material batches.
Halts heavy pallets on a roller line, using the external stop screw to tune the blocking position without removing the cylinder from the frame.
Size this 100 mm bore against the 80 mm and 125 mm options by checking your force margins. The 10 mm adjustable window is ideal when you need to share a single spare cylinder across machines that need slightly different 15 to 25 mm extend end positions. Mounting choices cover Basic, FA, LB, TC, TCM1, and TCM2 brackets. The -S suffix means the magnet is already inside for CMSE/DMSE sensors. Even at this short 25 mm stroke, always guide the rod end to prevent side-load damage.
Quick checklist
At 0.5 MPa it pushes 3927 N and pulls 3574 N. At 0.7 MPa push is 5497 N and pull is 5003 N. The theoretical max force is 801 kgf at 1.0 MPa. It has a 32 mm rod, M26x1.5 rod thread, G1/2 port, and 33 mm adjustable cushions at both ends.
The nominal 25 mm extend stroke is the maximum travel. The external stop screw lets you shorten that forward stroke by up to 10 mm on site, giving a usable extend range of 15 to 25 mm. The retract end is fixed, and this stop only sets position—it does not lock the load.
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