Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X50-40
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X50-40 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 50mm 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
- Stroke50 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM18×1.5
- CushionAdjustable, 20.5 mm
About the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X50-40
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder saves space by being shorter than a same-bore ISO 15552 unit. The hard-anodized aluminum barrel keeps the build light without external tie rods. It connects via a G1/4 port and features a 20 mm piston rod with an M18x1.5 thread.
The -40 code means an external adjuster can shorten the extend stroke on site by up to 40 mm, dropping the usable forward travel from the 50 mm maximum down to 10 mm. You can fine-tune the end position without swapping the cylinder. Based on the 0.5 MPa thrust, it handles about 589 N of safe working load, roughly 50 kg lifted vertically. Note this plain SKU lacks a magnet and cannot take a CMSE or DMSE sensor.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X50-40 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X50-40 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 50 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 JSIJ50X50-40
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×50 | 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 JSIJ50X50-40 Is Used
Clamp Stroke Tuning
Dial in the exact 10 to 50 mm forward clamping travel on a machining fixture using the external stop screw.
Transfer Gate Stop
Adjust the extend position on the fly to act as a variable product stop for changing package sizes.
Sealing Head Press
Fine-tune the downward pressing distance of a sealing jaw without physically remounting the actuator.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X50-40 the Right Cylinder?
For lower force needs, the 40 mm bore offers 628 N push at 0.5 MPa, while stepping up to the 63 mm bore yields 1559 N. This 50 mm model is a solid middle ground. The 40 mm adjuster window is ideal when you need to share one spare cylinder across several stroke variants or dial in a precise end stop on site. Mounting options include FA, LB, TC, TCM1, and TCM2. Because this is a non-magnetized SKU, you cannot fit position sensors; choose the -S version for CMSE/DMSE switches. For any stroke over 300 mm, 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 JSIJ50X50-40 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 is 200 kgf at 1.0 MPa. The air port is G1/4, the rod is 20 mm with an M18x1.5 thread, and the adjustable cushion is 20.5 mm at each end.
The nominal extend stroke is 50 mm. The external adjuster lets you shorten that forward travel by up to 40 mm on site, giving a usable range of 10 to 50 mm. The retract end is fixed. This stop sets the end position but does not lock the load; use an external rod lock or pilot-operated check valve if you need to hold a load against air loss.
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