
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X50-50 is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 50mm 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 barrel keeps the overall body shorter and more compact than a same-bore ISO 15552 unit. Air connects via a G1/2 port.
The JSIJ100X50-50 features an external stop screw that lets you shorten the extend stroke on-site by up to 50 mm. The nominal 50 mm stroke is the maximum, giving you a usable extend range of 0-50 mm, while the retract end remains fixed. This mechanism allows fine-tuning of the end position without swapping the cylinder. Note that this specific SKU lacks a magnet, so it cannot take CMSE or DMSE sensors.
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X50-50 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 50 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). |
| ×50 | 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.
Adjust the extend stroke on-site to set precise pressing depths for bearing insertion without changing the cylinder setup.
Act as a heavy-duty stopper on a conveyor line, tweaking the 0-50 mm extend window to accommodate different product sizes.
Push pallets into a specific alignment zone, using the external adjuster to dial in the exact end position for various pallet widths.
The 100 mm bore provides 5497 N at 0.7 MPa, making it ideal for medium-heavy loads. The adjustable stroke feature is perfect for sharing a spare cylinder across multiple stroke variants or fine-tuning end positions on-site. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because this is a non-magnetized SKU, you cannot mount position sensors; choose an -S variant for CMSE/DMSE switches. For any stroke length, always guide the load to prevent side-load damage to the rod seal.
Quick checklist
This 100 mm bore cylinder uses a G1/2 port and a 32 mm piston rod. It features adjustable air cushions of 33 mm at both ends.
The external stop screw lets you shorten the extend stroke by up to 50 mm on-site. The nominal 50 mm stroke is the maximum, so the usable extend range is 0-50 mm, while the retract end stays fixed. This stop only sets the end position and does not lock the load; for load holding on air loss, use an external rod lock or pilot-operated check valve.
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