Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-20
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-20 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 JSIJ50X350-20
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder brings on-site extend tuning to long-stroke tasks. The hard-anodized aluminium barrel keeps the body more compact than a same-bore ISO 15552 unit. It handles a safe working load of about 589 N, which translates to lifting roughly 50 kg vertically with a 2:1 margin.
A 20 mm external stop screw lets you shorten the extend stroke from the 350 mm maximum down to 330 mm without changing the mount, while the retract end stays fixed. Air enters via a G1/4 port, driving the 20 mm rod at 30-800 mm/s. Note this SKU lacks a magnet, so it cannot take CMSE or DMSE sensors.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-20 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-20 |
|---|---|
| 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 JSIJ50X350-20
| 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 JSIJ50X350-20 Is Used
Transfer Push-Off
Pushes parts off a belt at 350 mm, with the 20 mm adjuster tuning the exact drop point for different product widths.
Vertical Press Down
Lowers a 50 kg tooling head safely, using the adjustable stop to set precise downward travel without repositioning the frame.
Pallet Stopper Gate
Acts as a long-reach pallet stop where the extend endpoint can be dialed in 20 mm to accommodate varying pallet tolerances.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-20 the Right Cylinder?
This 50 mm bore sits between the 40 mm (628 N push) and 63 mm (1559 N push) options at 0.5 MPa. The 20 mm adjuster is ideal when you need to share a spare cylinder across slightly different stroke variants or fine-tune the end position on the machine. Mounting options include FA, LB, TC, TCM1, and TCM2. Because the 350 mm stroke invites rod bending, always use an external guide to absorb side loads. For position feedback you must select the -S magnet version, as this plain SKU cannot accept 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 JSIJ50X350-20 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.
The 20 mm external adjuster lets you shorten the extend stroke on-site from the 350 mm maximum down to 330 mm. The retract end is fixed. This stop only sets the end position; it does not lock the load, so use a pilot-operated check valve for holding.
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