Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X450-75
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X450-75 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
About the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X450-75
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder is built for applications needing on-site end-position tuning. The external stop screw lets you shorten the extend stroke by up to 75 mm, giving a usable range of 375-450 mm without changing the physical cylinder. The retract end remains fixed. Because it uses an extruded hard-anodized aluminum barrel rather than tension rods, the overall body is noticeably shorter and more compact than a same-bore ISO 15552 unit.
In practical terms, it handles a safe working load of about 589 N, which translates to lifting roughly 50 kg vertically with a 2:1 safety margin. The G1/4 port feeds the double-acting single rod, and adjustable air cushions of 20.5 mm decelerate the piston at both ends. Note that this specific SKU lacks a magnet and cannot accept CMSE or DMSE sensors; for position feedback you would need the -S variant. Furthermore, the cushion only decelerates the load, so an external rod lock or pilot-operated check valve is required to hold a load securely against air loss.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X450-75 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X450-75 |
|---|---|
| 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 JSIJ50X450-75
| 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 JSIJ50X450-75 Is Used
Sorter Diverter Tuning
Fine-tunes the extend stroke by up to 75 mm on-site to perfectly align a package diverter arm without machining new mount holes.
Variable Stops Pusher
Adjusts the extend end position on a shelf-loading pusher to handle different carton depths using the same 450 mm nominal stroke cylinder.
Clamp Position Setup
Dials in the exact clamping reach on a machining fixture by shortening the extend stroke, avoiding mechanical hard stops.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X450-75 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 75 mm extend-adjustment window is especially useful when you want a single shared spare across slightly different stroke variants or need to fine-tune the end position after mechanical installation. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because the 450 mm stroke is long, always guide the load externally to prevent rod bending and side-load wear. Remember that this no-magnet SKU cannot host a sensor; choose the -S version if you need CMSE/DMSE switches.
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 JSIJ50X450-75 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 force is 200 kgf at 1.0 MPa. This 50 mm bore unit uses a G1/4 air port and features a 20 mm piston rod with an M18x1.5 rod-end thread.
The nominal 450 mm stroke is the maximum extend length. The external adjuster lets you shorten the extend stroke on-site by up to 75 mm, yielding a usable extend range of 375-450 mm. The retract end position is fixed. This mechanism sets the end position but does not lock the load.
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