Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-20S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-20S 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
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-20S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder saves machine space by being shorter than a same-bore ISO 15552 unit. The hard-anodized aluminum barrel keeps the assembly light, while the G1/4 porting matches the bore standard. Because the external stop screw can shorten the extend stroke by up to 20 mm on site, you can fine-tune the end position without swapping the cylinder; usable extend travel becomes 380-400 mm, with the retract end fixed.
The -S suffix means a piston magnet is built in, ready for CMSE or DMSE reed and electronic switches that drop directly into the side grooves. In practical terms, the bore handles about 589 N of safe working load, which is roughly 50 kg lifted vertically with a 2:1 margin. Remember that the adjustable stop sets the end position but does not lock the load; you need an external rod lock or pilot-operated check valve to hold a load securely against air loss.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-20S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-20S |
|---|---|
| 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 JSIJ50X400-20S
| 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 JSIJ50X400-20S Is Used
Conveyor Diverter Tuning
Fine-tune the 400 mm extend reach by up to 20 mm on-site to align a diverter gate perfectly without machining new brackets.
Vertical Lift Stop
Lifts roughly 50 kg vertically using the 982 N push force, with the external stop allowing precise height calibration.
Packaging Pusher
Uses the built-in magnet and CMSE sensors to confirm retraction in tight spaces where a longer ISO cylinder would not fit.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X400-20S the Right Cylinder?
When sizing, the 63 mm bore steps up to 1559 N push at 0.5 MPa, while the 40 mm bore drops to 628 N, so the 50 mm bore is the middle ground for moderate force. The adjustable stroke is ideal for sharing a single spare cylinder across multiple stroke variants or making on-site end-position tweaks. Mounting options include FA, LB, TC, TCM1, and TCM2. Because the 400 mm stroke is long, always use external guides to prevent rod bending and account for side 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 JSIJ50X400-20S FAQ
The 50 mm bore provides 982 N push and 825 N pull at 0.5 MPa, 1374 N push and 1154 N pull at 0.7 MPa, with a theoretical max of 200 kgf at 1.0 MPa. The air port is G1/4.
An external stop screw lets you shorten the extend stroke by up to 20 mm on site, making the usable extend travel 380-400 mm from the 400 mm nominal maximum. The retract end remains fixed, and the stop only sets position; it does not lock the load.
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Standard models are processed and dispatched in 3-5 business days.
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