Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-20
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-20 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 JSIJ50X75-20
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder brings on-site flexibility to your fixturing. The hard-anodized aluminum barrel keeps the total length shorter than a same-bore ISO 15552 unit, and the G1/4 port matches the standard 50 mm sizing. It handles about 589 N of real work safely, which means you can lift roughly 50 kg vertically with a 2:1 margin.
The external stop screw lets you shorten the extend stroke by up to 20 mm on-site, giving a usable forward range of 55-75 mm while the retract end stays fixed. You can fine-tune the end position without swapping the cylinder. Note this plain SKU lacks a magnet and cannot take a CMSE or DMSE sensor; add an -S variant if you need position detection.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-20 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-20 |
|---|---|
| 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 JSIJ50X75-20
| 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 JSIJ50X75-20 Is Used
Clamp Stroke Tuning
Dial in the exact 55-75 mm forward clamp position on-site to accommodate varying part thicknesses without changing out the entire actuator.
Transfer Stopper Gate
Adjust the stop gate extend length by up to 20 mm to handle different product sizes on the line, ensuring precise physical indexing.
Vertical Lift Stop
Lift loads up to 50 kg safely and fine-tune the upper stop position to prevent over-travel into delicate upper machinery.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-20 the Right Cylinder?
Size this 50 mm bore against its neighbours: a 40 mm gives 628 N push at 0.5 MPa, while a 63 mm jumps to 1559 N. The adjustable 55-75 mm extend window is ideal when you need to tune end positions across multiple fixtures or share a spare across slight stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2. Because this non-magnet SKU cannot host a sensor, select an -S model if your control sequence requires CMSE or DMSE switches. For any stroke over 300 mm, always guide the load to prevent side-load wear on the rod seals.
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 JSIJ50X75-20 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. It uses a G1/4 air port, a 20 mm rod, and an M18x1.5 rod-end thread.
The nominal stroke is 75 mm, which is the maximum extend length. The external adjuster lets you shorten the extend stroke by up to 20 mm on-site, giving a usable range of 55-75 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 to hold a load securely.
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