Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X450-20S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X450-20S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 450mm 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
- Stroke450 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 JSIJ50X450-20S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder uses an external adjuster to shorten the extend stroke on-site by up to 20 mm. The nominal 450 mm stroke remains the maximum travel, letting you fine-tune the end position without swapping the actuator. Because the hard-anodized aluminum extrusion omits tie rods entirely, the overall body is shorter and more compact than a same-bore ISO 15552 cylinder. Equipped with a built-in magnet, it accepts CMSE or DMSE sensors in the side grooves for position detection.
In practical terms, the bore handles a safe working load of roughly 589 N, which translates to lifting about 50 kg vertically with a 2:1 safety margin. The G1/4 port feeds the double-acting single rod, while adjustable air cushions of 20.5 mm at each end absorb kinetic energy near the stroke limits. Remember that the cushion only decelerates the piston; an external rod lock or pilot-operated check valve is required to hold a load securely against air loss.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X450-20S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X450-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 450 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 JSIJ50X450-20S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×450 | 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 JSIJ50X450-20S Is Used
Transfer Line Diverter
Fine-tune the 450 mm extend stroke by up to 20 mm on-site to perfectly align a diverting gate without machining new hard stops.
Vertical Lift Gate
Lifts a 50 kg access panel using the 982 N push force at 0.5 MPa, with the compact JIS profile fitting into tight overhead clearances.
Press Ejection Pusher
Uses the 20.5 mm adjustable air cushions to decelerate the ejection stroke smoothly, while the magnet triggers a DMSE sensor to confirm part release.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X450-20S the Right Cylinder?
When sizing this actuator, compare it against neighbouring bores: a 40 mm bore gives 628 N of push at 0.5 MPa, while a 63 mm bore jumps to 1559 N. The 20 mm adjustable extend window is ideal for sharing a single spare cylinder across machines that need slightly different end positions, saving inventory space. You can mount it using FA, LB, TC, TCM1, or TCM2 brackets. The -S suffix confirms the piston magnet is present for CMSE/DMSE switches. Because the 450 mm stroke is relatively long, always support the load with an external guide rail to prevent rod bending and premature seal wear from 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 JSIJ50X450-20S FAQ
At 0.5 MPa it provides 982 N of push force and 825 N of pull force. At 0.7 MPa the push increases to 1374 N and the pull to 1154 N. The theoretical maximum force is 200 kgf at 1.0 MPa. This 50 mm bore cylinder uses a G1/4 air port.
An external stop screw lets you shorten the extend stroke on-site by up to 20 mm, giving a usable extend range of 430 to 450 mm. The nominal 450 mm stroke is the maximum travel, and the retract end remains fixed. This mechanism only sets the end position and does not lock the load.
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