Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X80-30S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X80-30S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 80mm 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
- Stroke80 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM18×1.5
- CushionAdjustable, 20.5 mm
About the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X80-30S
Generating 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder is built for tight machinery. Its extruded hard-anodized aluminium barrel omits tie rods entirely, making it shorter and more compact than a same-bore ISO 15552 unit. The -30S code adds a piston magnet for CMSE/DMSE sensors and a 30 mm external adjuster window.
The external stop screw lets you trim the extend stroke from the 80 mm maximum down to 50 mm on site, fixing the end position without swapping the cylinder. It handles a safe working load of roughly 589 N, which translates to lifting about 50 kg vertically with a 2:1 margin. Air flows through a G1/4 port, and the retract end remains fixed.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X80-30S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X80-30S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 80 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 JSIJ50X80-30S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×80 | 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 JSIJ50X80-30S Is Used
Press Fit Tuning
Dial in the exact 50 to 80 mm extend reach on site to seat bearings without changing the physical cylinder mount.
Variable Divert Stroke
Shorten the extend window by 30 mm on the fly to handle different package widths on a single sorting line.
Compact Lift Stop
Lift roughly 50 kg vertically using the 2:1 safety margin, with the hard-anodized barrel fitting into low-clearance enclosures.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X80-30S the Right Cylinder?
When sizing, the 40 mm bore offers 628 N push at 0.5 MPa, while the 63 mm bore steps up to 1559 N. This 50 mm model fits the middle ground perfectly. The adjustable stroke is ideal for sharing one spare across multiple stroke variants or fine-tuning the end position during machine commissioning. Mounting options include FA, LB, TC, TCM1, and TCM2. The -S suffix means the side grooves are ready for CMSE/DMSE reed or electronic switches. For any stroke over 300 mm, always use a guide rail to prevent side-load damage.
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 JSIJ50X80-30S 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 air port size is G1/4, the rod is 20 mm, and the rod-end thread is M18x1.5.
The nominal 80 mm extend stroke is the maximum. An external stop screw lets you shorten the extend stroke on site by up to 30 mm, yielding a usable range of 50 to 80 mm. The retract end is fixed. This stop only sets the end position; it is not a load lock, so use an external rod lock or pilot-operated check valve if you need to hold a load against air loss.
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