Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-30S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-30S 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 JSIJ50X400-30S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder is built for on-site stroke tuning. The external stop screw lets you shorten the extend stroke by up to 30 mm, giving a usable range of 370-400 mm without swapping the actuator. Its extruded hard-anodized aluminum barrel makes it shorter and more compact than a same-bore ISO 15552 unit. The -S suffix means a built-in piston magnet is present, allowing CMSE or DMSE sensors to drop directly into the side grooves.
This double-acting single-rod actuator handles about 589 N of real work safely, which translates to lifting roughly 50 kg vertically with a 2:1 margin. It features a 20 mm rod, an M18x1.5 rod-end thread, and a G1/4 air port. Adjustable air cushions of 20.5 mm at each end absorb end-of-stroke impact. Remember that the cushion only decelerates the piston; it does not lock the load, so fit an external rod lock or pilot-operated check valve if you need to hold a vertical load against air loss.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-30S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-30S |
|---|---|
| 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 JSIJ50X400-30S
| 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 JSIJ50X400-30S Is Used
Sorter Diverter Tuning
Fine-tune the 370-400 mm extend reach on a package diverter to handle varying box sizes without re-mounting the actuator.
Press Fit Adjustment
Dial in the exact 30 mm downward extension window for a light-duty press fit operation, ensuring precise contact without crushing the part.
Pallet Stop Positioning
Adjust the end stop on a pallet handling line to accommodate different pallet heights while maintaining a compact JIS footprint.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-30S 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 -30 mm window is ideal when you need to fine-tune the extend end-position on the machine or want a shared spare across slightly different stroke variants. JSIJ mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because this is a 400 mm stroke, always guide the load externally to prevent rod bending and side-load wear. The included magnet supports CMSE/DMSE switches for position sensing.
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 JSIJ50X400-30S FAQ
At 0.5 MPa it provides 982 N push and 825 N pull. At 0.7 MPa it provides 1374 N push and 1154 N pull. The theoretical maximum force is 200 kgf at 1.0 MPa. This 50 mm bore model uses a G1/4 air port.
The nominal 400 mm stroke is the maximum. The external adjuster lets you shorten the extend stroke on-site by up to 30 mm, giving a usable extend range of 370-400 mm. The retract end remains fixed, and the adjuster sets the end position rather than locking the load.
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