Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-30S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-30S 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 JSIJ50X350-30S
Generating 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder is built for tasks needing exact end-position tuning. The extruded hard-anodized aluminium barrel leaves out external rods, making the body shorter and more compact than a same-bore ISO 15552 unit. It feeds via a G1/4 port and carries an integrated magnet for position sensing.
The -30 code means an external stop screw lets you shorten the 350 mm extend stroke by up to 30 mm right at the machine, so the usable range is 320 to 350 mm. This lets you fine-tune the endpoint without swapping the cylinder, and the retract end stays fixed. In practice it handles about 589 N of real work, roughly 50 kg lifted vertically with a 2:1 margin. The side grooves accept CMSE/DMSE switches, and the adjustable air cushions absorb 20.5 mm of impact at each end.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-30S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-30S |
|---|---|
| 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 JSIJ50X350-30S
| 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 JSIJ50X350-30S Is Used
Stroke Trimming
Dial in the exact 320 to 350 mm extend reach on a variable-length indexing gate without changing hardware.
Vertical Lift Stop
Lower a 50 kg tooling plate and fine-tune the final descent position using the external stop screw.
Transfer Alignment
Adjust the extend endpoint on the fly to sync with a moving conveyor belt without reprogramming the logic.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X350-30S the Right Cylinder?
If 982 N of push at 0.5 MPa is too much, step down to the 40 mm bore which gives 628 N; if you need more power, the 63 mm bore offers 1559 N. The -30 mm adjustable window is ideal when you need to share one spare across slight stroke variants or dial in a final reach on-site. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. The -S suffix means the piston magnet is present for CMSE/DMSE sensors. Because the stroke is 350 mm, always use an external guide rail to prevent rod bending and side-load damage.
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 JSIJ50X350-30S 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. The air port is G1/4, the rod is 20 mm, and the cushion stroke is 20.5 mm.
The 350 mm nominal stroke is the maximum. The external adjuster lets you shorten the extend stroke by up to 30 mm on-site, giving a usable range of 320 to 350 mm. The retract end is fixed. This mechanism sets the end position and is not a load lock; you need an external rod lock or pilot-operated check valve to hold a load on air loss.
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