Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-40
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-40 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 JSIJ50X350-40
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder brings on-site extend-stroke flexibility to long-travel tasks. The extruded hard-anodized aluminium barrel omits tie rods entirely, making the body shorter and more compact than a same-bore ISO 15552 unit. It handles about 589 N of real work safely, which translates to lifting roughly 50 kg vertically with a 2:1 margin.
The external stop screw provides a 40 mm adjustment window, letting you fine-tune the usable extend stroke from 310 mm up to the 350 mm maximum without changing the cylinder itself, while the retract end remains fixed. Pneumatic connections use a G1/4 port. Note this specific SKU lacks a magnet, so it cannot accept CMSE or DMSE sensors; you would need the -S variant for position detection.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-40 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-40 |
|---|---|
| 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 JSIJ50X350-40
| 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 JSIJ50X350-40 Is Used
Transfer Push-Off Tuning
Dial in the exact push-off distance on a conveyor diverter using the 40 mm window, shortening the 350 mm extend stroke to match varying package sizes without swapping cylinders.
Adjustable Lowering Stop
Set a precise lower end position for a light 50 kg vertical lift fixture, tweaking the extend stroke on-site to prevent over-travel into the workpiece.
Shared Spare Actuator
Keep one actuator as a universal spare for multiple 300-350 mm stroke machines, using the external adjuster to match the exact required extend length on the fly.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-40 the Right Cylinder?
When sizing this actuator, look at the neighbouring bores: a 40 mm bore gives 628 N push at 0.5 MPa, while a 63 mm bore jumps to 1559 N, so the 50 mm bore at 982 N is the right middle ground for moderate loads. The 40 mm adjustable window is ideal when you need to share a spare cylinder across slightly different stroke variants or dial in an exact end position on the machine. JSIJ mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because the stroke is 350 mm, always use an external guide rail to prevent rod bending and absorb side loads. Remember that a plain cylinder drifts on air loss; the cushion only decelerates, so fit an external rod lock or pilot-operated check valve if the load must be held.
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 JSIJ50X350-40 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. The air port size is G1/4, the rod is 20 mm, and the adjustable cushion is 20.5 mm at each end.
The -40 means the extend stroke can be shortened on-site by up to 40 mm via an external stop screw. The usable extend range is 310 to 350 mm, with 350 mm being the maximum nominal stroke. The retract end is fixed. This mechanism only sets the end position; it does not lock the load.
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