Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-40S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-40S 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 JSIJ50X350-40S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS actuator brings on-site flexibility to long-stroke tasks. The hard-anodized aluminium profile barrel leaves out external rods, making the whole unit shorter and more compact than a same-bore ISO 15552 cylinder. It handles about 589 N of real work safely, which means lifting roughly 50 kg vertically with a 2:1 margin. The G1/4 port keeps air flow balanced for the 30-800 mm/s speed range.
A built-in piston magnet (-S) lets you drop CMSE or DMSE reed and electronic switches straight into the side grooves for precise position sensing. The external adjuster shortens the extend stroke by up to 40 mm on-site, giving a usable range of 310-350 mm without swapping the cylinder, while the retract end stays fixed. Adjustable 20.5 mm air cushions at both ends absorb end-of-stroke impact, though they only decelerate the load and do not hold it if air pressure drops.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-40S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-40S |
|---|---|
| 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 JSIJ50X350-40S
| 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 JSIJ50X350-40S Is Used
Transfer Line Diverter
Fine-tune the 350 mm extend stop on-site by up to 40 mm to hit moving pallets perfectly without machining new hard stops.
Vertical Package Lift
Lifts roughly 50 kg vertically using the 982 N push force, with the -S magnet confirming the top and bottom positions via DMSE switches.
Press Pin Insertion
Dial in the exact 310-350 mm extend depth for seating pins, relying on the 20.5 mm cushions to soften the end impact.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-40S the Right Cylinder?
When sizing this 50 mm bore, the neighbouring 40 mm pushes 628 N at 0.5 MPa and the 63 mm pushes 1559 N, giving you clear steps if the load changes. The 40 mm adjustable window is ideal for fine-tuning the extend end position on-site or sharing one spare across multiple stroke variants. You can mount it using the FA, LB, TC, TCM1, or TCM2 brackets. Because the 350 mm stroke is long, always use an external guide rail to prevent rod bending and side loads. The -S magnet supports CMSE/DMSE sensors, but remember a plain cylinder drifts without live air, so add an external rod lock or pilot-operated check valve for held loads.
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 JSIJ50X350-40S 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 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 350 mm nominal stroke is the maximum. The external stop screw lets you shorten the extend stroke by up to 40 mm on-site, giving a usable extend range of 310-350 mm. The retract end is fixed. This mechanism sets the end position and does not lock the load.
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