Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X50-20S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X50-20S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 50mm 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
- Stroke50 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM18×1.5
- CushionAdjustable, 20.5 mm
About the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X50-20S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder brings on-site extend-stroke flexibility to compact automation setups. The hard-anodized aluminium barrel keeps the overall body shorter than a same-bore ISO 15552 unit, saving valuable machine space. It handles about 589 N of real work safely, which means you can lift roughly 50 kg vertically with a 2:1 margin.
The external stop screw lets you trim the extend stroke by up to 20 mm on-site, dropping the usable forward travel from the 50 mm maximum down to 30 mm without swapping the cylinder. Retract remains fixed, and the G1/4 port feeds the double-acting single-rod system. A built-in piston magnet (-S) accepts CMSE/DMSE sensors in the side grooves for precise position detection.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X50-20S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X50-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 50 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 JSIJ50X50-20S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×50 | 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 JSIJ50X50-20S Is Used
Tooling Depth Calibration
Dial in the exact 30 to 50 mm extend reach on-site via the external stop screw to perfect a clamping depth without machining new spacers.
Multi-Variant Spare
Keep one cylinder on the shelf and adjust the forward stroke down by 20 mm to service several similar 50 mm and 30 mm actuation points.
Compact Divert Gate
Fit the shorter JIS profile body into tight transfer lines and use the magnet for positive divert confirmation.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X50-20S the Right Cylinder?
When sizing this 50 mm bore, stepping down to a 40 mm bore yields 628 N push at 0.5 MPa, while stepping up to a 63 mm bore provides 1559 N. The 20 mm adjustable window is ideal for sharing a single spare across multiple stroke variants or fine-tuning an end position after a tooling change. Mounting options include FA, LB, TC, TCM1, and TCM2. The -S magnet supports CMSE/DMSE switches. For any stroke at or above 300 mm, always guide the load to prevent side-load damage to the front cover.
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 JSIJ50X50-20S 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 Ø20 mm with an M18x1.5 thread, and it has 20.5 mm adjustable air cushions at both ends.
The nominal 50 mm stroke is the maximum forward travel. The external adjuster lets you shorten the extend stroke on-site by up to 20 mm, giving a usable range of 30 to 50 mm. The retract end is fixed. This mechanism sets the end position and does not lock the load; for holding a load on air loss, use an external rod lock or pilot-operated check valve.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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