Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-40
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-40 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 75mm stroke, G1/4 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.
- BoreØ50 mm
- Stroke75 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM18×1.5
- CushionAdjustable, 20.5 mm
About the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-40
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder saves machine space by being shorter than a same-bore ISO 15552 unit. The hard-anodized aluminum barrel contains no tie rods, keeping the build clean and light. It handles about 589 N of real work safely, which means you can lift roughly 50 kg vertically with a 2:1 margin. Air connects via two G1/4 ports.
The -40 code means an external adjuster lets you shorten the extend stroke on-site by up to 40 mm, giving a usable forward range of 35-75 mm while the retract end stays fixed. You can fine-tune the end position without physically swapping the cylinder. This plain SKU lacks a magnet and cannot take a CMSE or DMSE sensor, so order an -S variant if you need position detection.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-40 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-40 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 75 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| Rod thread | M18×1.5 |
| 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, 20.5 mm |
| Max standard stroke | Up to 1200 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).
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-40
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×75 | 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.
Where the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-40 Is Used
Crimp Height Tuning
Dial in the exact crimp depth on a terminal press by trimming the extend stroke within the 35-75 mm window without changing the cylinder.
Variable Transfer Stop
Act as an adjustable lane stopper on a conveyor, extending between 35 and 75 mm to handle different package sizes on the fly.
Carton Flap Folding
Fold varying carton flaps precisely by tweaking the forward end position on-site to avoid crushing the cardboard.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-40 the Right Cylinder?
This 50 mm bore sits between the 40 mm (628 N push at 0.5 MPa) and the 63 mm (1559 N push at 0.5 MPa) sizes, letting you scale force precisely. The adjustable stroke shines when you need to dial in a final end position on-site or want a single spare part covering several slightly different stroke needs. Mount it using the FA, LB, TC, TCM1, or TCM2 brackets. Because this is a non-magnet SKU, it cannot host a reed switch. Since the 75 mm stroke is short, side-load risks are minimal, but for any stroke over 300 mm always guide the rod to prevent binding. Remember the air cushion only decelerates the piston; use an external rod lock or pilot-operated check valve if the load must hold position on air loss.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Set cushions to minimum, then release gradually.
- check Use correct mounting accessory (LB/FA/FB/CA/CB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-40 FAQ
At 0.5 MPa it pushes 982 N and pulls 825 N. At 0.7 MPa it pushes 1374 N and pulls 1154 N. The theoretical maximum force is 200 kgf at 1.0 MPa.
The 75 mm nominal stroke is the maximum. The -40 code provides an external adjuster that lets you shorten the extend stroke on-site by up to 40 mm, yielding a usable forward range of 35-75 mm. The retract end remains fixed.
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