Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X125-50
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X125-50 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 125mm 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
- Stroke125 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 JSIJ50X125-50
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore pneumatic actuator features an external adjuster that shortens the extend stroke by up to 50 mm on-site. The nominal 125 mm stroke remains the maximum travel, yielding a usable extend range of 75 to 125 mm, while the retract end stays fixed. It handles about 589 N of real work, which means roughly 50 kg lifted vertically with a 2:1 safety margin.
Built to JIS standards with an extruded hard-anodized aluminium profile barrel, the body is noticeably shorter and more compact than a same-bore ISO 15552 cylinder. It uses a G1/4 port and a 20 mm rod with M18x1.5 threading. Note that this specific SKU lacks a magnet and cannot accept CMSE or DMSE sensors. Furthermore, the adjustable stop only sets the end position; it does not hold the load on air loss, so an external rod lock or pilot-operated check valve is required for suspended loads.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X125-50 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X125-50 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 125 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 JSIJ50X125-50
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×125 | 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 JSIJ50X125-50 Is Used
Adjustable Clamping Press
Dial in the exact 75 to 125 mm extend reach on-site to clamp varying material thicknesses without repositioning the entire fixture.
Variable Transfer Stopper
Use the 50 mm shortening window to alter the end-stop position for different package sizes moving down a packing line.
Vertical Lift Diverter
Lift roughly 50 kg loads vertically using the 2:1 safety margin, tweaking the extend endpoint to match varying conveyor heights.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X125-50 the Right Cylinder?
When sizing this actuator, the 40 mm bore offers 628 N push at 0.5 MPa for lighter duties, whereas stepping up to the 63 mm bore provides 1559 N for heavier demands. The 50 mm adjustable-stroke design is ideal for sharing a spare across stroke variants or fine-tuning end positions on-site without swapping the cylinder. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2 brackets. Because this unit has no -S suffix, it cannot support magnetic sensing. For any stroke length of 300 mm or greater, always use a guide rail to prevent excessive side-loading on the rod.
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 JSIJ50X125-50 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 uses a G1/4 air port, a 20 mm rod, an M18x1.5 rod thread, and 20.5 mm adjustable air cushions at both ends.
The external stop screw lets you shorten the extend stroke by up to 50 mm on-site. With a 125 mm nominal maximum stroke, the usable extend range is 75 to 125 mm, while the retract end remains fixed. This mechanism only sets the end position and does not lock the load; a pilot-operated check valve is needed for load holding.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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