
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-10S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 150mm 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.
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS profile cylinder brings heavy-duty motion into a compact footprint that is shorter than a same-bore ISO 15552 unit. The hard-anodized aluminium barrel keeps the assembly clean without external tie rods. It handles about 3682 N of real work safely, which translates to lifting roughly 313 kg vertically with a 2:1 margin. Air connects via a G1/2 port.
The -10 code means an external adjuster can shorten the extend stroke by up to 10 mm on site, giving a usable forward travel of 140 to 150 mm while the retract end stays fixed. You can fine-tune the end position without swapping the cylinder. The -S suffix adds a piston magnet for CMSE or DMSE switches in the side grooves. A plain cylinder drifts on air loss, so fit an external rod lock for held loads.
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-10S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 150 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| 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 – 500 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 | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×150 | 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 large platens in pallet assembly lines, using the 10 mm extend window to dial in exact pressing depth without reprogramming the machine.
Provides 8590 N at 0.7 MPa for compacting materials, letting operators fine-tune the final crush distance on-site to suit different batch densities.
Pushes heavy totes on conveyors where the 313 kg vertical lift capacity and robust 32 mm rod handle substantial off-center loads safely.
This 125 mm bore sits at the top of the range, so if 6136 N push at 0.5 MPa is excessive, step down to an 80 mm bore for 2513 N. The on-site extend shortening is ideal when you need to share one spare across several stroke variants or dial in a final position. Mounting options include FA, LB, TC, TCM1, and TCM2. The built-in magnet supports CMSE/DMSE sensors. Because the 150 mm stroke is well under the side-load threshold, standard mounting is fine, but always guide the rod for any stroke over 300 mm.
Quick checklist
At 0.5 MPa it pushes 6136 N and pulls 5734 N. At 0.7 MPa push is 8590 N and pull is 8028 N. The theoretical max is 1251 kgf at 1.0 MPa. It uses a G1/2 port, a 32 mm rod, M27x2.0 rod thread, and has 33 mm adjustable cushions at both ends.
The 150 mm nominal stroke is the maximum. An external stop screw lets you shorten the extend stroke by up to 10 mm on-site, giving a usable forward travel of 140 to 150 mm. The retract end is fixed. This stop sets the end position and does not lock the load.
Genuine AirTAC parts produced by AirTAC factory.
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