
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X225-75 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.
Its hard-anodized aluminum profile barrel keeps the overall envelope more compact than a same-bore ISO 15552 unit. The G1/2 port feeds the chamber efficiently to maintain smooth 30-800 mm/s cycling speeds.
An external adjuster allows you to shorten the extend stroke on-site by up to 75 mm, yielding a usable forward travel of 150-225 mm without swapping the cylinder. This on-site tuning means you can dial in the exact end position for multiple machines using one shared spare. Note that this specific SKU lacks a magnet, so it cannot accept CMSE or DMSE sensors.
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X225-75 |
|---|---|
| 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 150-225 mm extend position for seating bearings without machining custom spacers.
Adjust the extend stop on-site to handle different package widths on a shared production line.
The 100 mm bore hits a strong middle ground for medium-heavy machinery. The 75 mm adjustable window is ideal when you need to fine-tune the extend end position across different fixtures without changing the mounting layout. You can mount it via FA, LB, TC, TCM1, or TCM2 brackets. Because the 225 mm stroke exceeds 300 mm only slightly, side-load risks are minimal, but you should still guide the load to prevent rod binding. Remember that this non-magnet version cannot host position sensors.
Quick checklist
At 0.5 MPa it pushes with 3927 N and pulls with 3574 N. At 0.7 MPa the push is 5497 N and the pull is 5003 N. The theoretical maximum force is 801 kgf at 1.0 MPa. It uses a G1/2 port and a 33 mm adjustable air cushion at each end.
The nominal 225 mm extend stroke is the maximum travel. An external stop screw lets you shorten the forward stroke on-site by up to 75 mm, giving a usable extend range of 150-225 mm. The retract end remains fixed. This mechanism only sets the end position; it does not lock the load, so you need an external rod lock or pilot-operated check valve to hold a load against air loss.
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