Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-75S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-75S 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 JSIJ50X400-75S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder is built for applications needing on-site end-position tuning. The hard-anodized aluminum extruded body keeps the unit more compact than a same-bore ISO 15552 cylinder. It handles about 589 N of real work safely, which translates to lifting roughly 50 kg vertically with a 2:1 margin.
A built-in piston magnet (-S) allows CMSE or DMSE switches to drop directly into the side sensor grooves. The external adjuster lets you shorten the extend stroke by up to 75 mm on-site, giving a usable range of 325 to 400 mm without changing the cylinder itself. Air connects via a G1/4 port, and adjustable air cushions of 20.5 mm at each end absorb shock. The retract end remains fixed, and the adjuster sets the stop position rather than locking the load.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-75S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-75S |
|---|---|
| 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 JSIJ50X400-75S
| 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 JSIJ50X400-75S Is Used
Transfer Push-Off Tuning
Fine-tune the push-off distance on a conveyor line by dialing the extend stroke back up to 75 mm to match varying product widths without swapping cylinders.
Adjustable Press Downstroke
Set precise lower end-positions for a light pressing task, using the 325-400 mm window to accommodate different material thicknesses on the fly.
Dynamic Package Stopper
Adjust the stopping depth for mixed-size cartons in a sorting hub, ensuring gentle contact by shortening the extend stroke exactly where needed.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-75S the Right Cylinder?
When sizing this model, the 50 mm bore provides 982 N push and 825 N pull at 0.5 MPa. If you need less force, the 40 mm bore offers 628 N push, while stepping up to the 63 mm bore yields 1559 N push for heavier demands. The 75 mm adjustable window is ideal when you need to fine-tune the extend endpoint across multiple stations or keep one spare cylinder for various stroke lengths. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because the 400 mm stroke is relatively long, always use an external guide to prevent rod bending and side loads. The -S version supports sensors, whereas a plain SKU cannot take a switch.
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 JSIJ50X400-75S FAQ
This 50 mm bore cylinder pushes 982 N and pulls 825 N at 0.5 MPa. At 0.7 MPa, push is 1374 N and pull is 1154 N. The theoretical maximum force is 200 kgf at 1.0 MPa. It uses a G1/4 air port and features a 20 mm piston rod with an M18x1.5 rod-end thread.
The nominal 400 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke on-site by up to 75 mm, yielding a usable range of 325 to 400 mm. The retract end is fixed. This mechanism only sets the end position; it does not lock the load. For load holding on air loss, you must use an external rod lock or pilot-operated check valve.
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