Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-75S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-75S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 350mm 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
- Stroke350 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM18×1.5
- CushionAdjustable, 20.5 mm
About the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-75S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder is built for applications demanding exact end-position tuning. The hard-anodized aluminum barrel omits tie rods, making the unit shorter and more compact than a same-bore ISO 15552 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 connections use a G1/4 port, and the M18x1.5 rod end drives a 20 mm piston rod.
The -75S designation means an external adjuster can shorten the extend stroke on-site by up to 75 mm, giving a usable range of 275 to 350 mm while the retract end stays fixed. You can fine-tune the endpoint without swapping the cylinder, and the built-in magnet supports CMSE/DMSE sensors in the side grooves. Remember that the adjustable stop sets position only; a plain cylinder drifts on air loss, so fit an external rod lock or pilot-operated check valve to hold a load.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-75S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-75S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 350 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 JSIJ50X350-75S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×350 | 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 JSIJ50X350-75S Is Used
Divert Gate Tuning
Adjusts the extend stroke on-site by up to 75 mm to set the exact push distance of a divert gate without changing the cylinder mount.
Variable Stops
Fine-tunes the end position for packaging stops of varying carton widths, using the 275 to 350 mm usable stroke window.
Press Positioning
Sets precise lower end positions for a light assembly press, relying on the 50 mm bore to deliver 982 N of thrust at 0.5 MPa.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-75S the Right Cylinder?
When sizing this actuator, look at the neighboring bores: a 40 mm bore gives 628 N push at 0.5 MPa, while a 63 mm bore yields 1559 N, so the 50 mm bore at 982 N sits perfectly in the middle for medium-duty tasks. The adjustable stroke is ideal when you need on-site end-position tuning or want a shared spare across slightly different stroke variants. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2 brackets. The -S version includes a magnet for CMSE/DMSE switches. Because the 350 mm stroke is relatively long, always use external guides to prevent rod bending and manage side loads.
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 JSIJ50X350-75S 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 is G1/4.
The external stop screw lets you shorten the extend stroke on-site by up to 75 mm. The usable extend range is 275 to 350 mm, with 350 mm being the maximum nominal stroke. The retract end is fixed. This stop sets the end position and is not a load lock.
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