Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-50S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-50S 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 JSIJ50X400-50S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder keeps your footprint tight. The extruded hard-anodized aluminum barrel makes it shorter and more compact than a same-bore ISO 15552 unit, while the G1/4 port matches the standard bore mapping. 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 trim the extend stroke on-site by up to 50 mm, giving a usable range of 350-400 mm without changing the cylinder itself. Because this is an -S SKU, a built-in piston magnet works with CMSE/DMSE switches in the side grooves for position sensing. Remember that the air cushion only decelerates the piston near the ends; for a load that must hold on air loss, fit an external rod lock or pilot-operated check valve.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-50S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-50S |
|---|---|
| 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 JSIJ50X400-50S
| 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 JSIJ50X400-50S Is Used
Divert Gate Tuning
Dial in the exact extend reach of a sorting diverter on-site using the 50 mm adjuster window to handle varying package sizes without swapping cylinders.
Vertical Lift Stops
Lift 50 kg loads vertically with a 2:1 safety margin, adjusting the upper end position in 350-400 mm to match shelf heights precisely.
Sealing Head Alignment
Fine-tune the down-stroke of a packaging sealing head within the 50 mm window to accommodate different carton thicknesses on the fly.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-50S the Right Cylinder?
When sizing this 50 mm bore, step down to a 40 mm bore if your application only needs 628 N of push at 0.5 MPa, or step up to a 63 mm bore for 1559 N. The -50 mm adjuster window is ideal for sharing one spare cylinder across several stroke variants or fine-tuning the end position on-site. JSIJ mounting options include FA, LB, TC, TCM1, and TCM2. With a 400 mm stroke, always use an external guide to prevent rod bending and manage side loads. The -S magnet allows drop-in CMSE/DMSE sensors.
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 JSIJ50X400-50S 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 max is 200 kgf at 1.0 MPa. It features a 20 mm rod, M18x1.5 rod thread, G1/4 port, 20.5 mm adjustable cushions, and operates at 30-800 mm/s.
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, yielding a usable extend range of 350-400 mm. The retract end remains fixed, and this stop sets position only, not a load lock.
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