Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-50
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-50 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 400mm 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
- Stroke400 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM18×1.5
- CushionAdjustable, 20.5 mm
About the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-50
Generating 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder cuts a shorter footprint than a same-bore ISO 15552 unit while delivering a 400 mm extend stroke. The hard-anodized aluminium barrel keeps the build light, and the G1/4 port matches the bore standard.
An external adjuster lets you trim the extend stroke on-site by up to 50 mm, dropping the usable travel to 350 mm without swapping the cylinder—ideal for fine-tuning end positions. It handles about 589 N of real work safely, lifting roughly 50 kg vertically with a 2:1 margin. Note this SKU lacks a magnet, so it cannot take CMSE/DMSE sensors.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-50 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-50 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 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 JSIJ50X400-50
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×400 | 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 JSIJ50X400-50 Is Used
Sorter Diverter Tuning
Dial in the exact 350-400 mm push distance on-site to align a package diverter arm without machining new stops.
Vertical Lift Gate
Lifts a 50 kg gate panel using the 982 N push force, with the external adjuster setting the precise open height.
Carton Flap Folder
Shortens the extend stroke by up to 50 mm to fold varying carton sizes accurately on a shared line.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-50 the Right Cylinder?
Downsize to a 40 mm bore if you only need 628 N at 0.5 MPa, or step up to 63 mm for 1559 N when this 50 mm unit maxes out at 1374 N push at 0.7 MPa. The -50 mm adjuster window makes this a great shared spare across 350-400 mm stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2. Because the 400 mm stroke invites rod bending, use an external guide to absorb side loads. For position feedback you must pick the -S variant, as this plain SKU cannot host a sensor.
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 JSIJ50X400-50 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 is 200 kgf at 1.0 MPa. The air port is G1/4.
The nominal 400 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke on-site by up to 50 mm, giving a usable range of 350-400 mm. The retract end remains fixed. This mechanism sets the end position and does not lock the load.
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