Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X80-75
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X80-75 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 80mm 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
- Stroke80 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM18×1.5
- CushionAdjustable, 20.5 mm
About the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X80-75
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder is built for applications needing exact end-position tuning on the floor. The extruded hard-anodized aluminium barrel omits tie rods, making the body shorter and more compact than a same-bore ISO 15552 unit. A G1/4 port supplies air, driving a 20 mm piston rod with M18x1.5 threading and 20.5 mm adjustable air cushions at both ends.
The external stop screw lets you shorten the extend stroke by up to 75 mm on site, yielding a usable extend range of 5-80 mm while the retract end remains fixed. This on-site adjustability means you can fine-tune the stroke without swapping the cylinder, handling about 589 N of real work or roughly 50 kg lifted vertically. Note that this SKU lacks a magnet and cannot take a CMSE/DMSE sensor; the cushion only decelerates the load, so fit an external rod lock or pilot-operated check valve if you need to hold position against air loss.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X80-75 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X80-75 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 80 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 JSIJ50X80-75
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×80 | 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 JSIJ50X80-75 Is Used
Probe Depth Trimming
Dial in the extend stroke from 5 to 80 mm on a testing fixture, letting the external adjuster compensate for varying part heights without changing the cylinder.
Variable Transfer Stops
Act as an adjustable lane diverter on a conveyor, where the 75 mm shortening window fine-tunes the stop position for different package sizes on site.
Shared Spare Cylinder
Keep one cylinder in maintenance stock and adjust its 80 mm stroke down to match several shorter, specific machine requirements during urgent changeovers.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X80-75 the Right Cylinder?
When sizing this 50 mm bore, compare it against its neighbours: a 40 mm bore yields 628 N push at 0.5 MPa, while a 63 mm bore provides 1559 N. The 50 mm hits a solid middle ground at 982 N. The -75 mm adjustable window is highly useful when you need to share one spare cylinder across several stroke variants or dial in a precise end position after mechanical assembly. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2 brackets. Because this specific SKU has no -S suffix, it cannot accept magnetic sensors. For any stroke reaching 300 mm or longer, always guide the load to prevent rod side-loading and premature seal wear.
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 JSIJ50X80-75 FAQ
This 50 mm bore cylinder uses a G1/4 port. It delivers 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 maximum of 200 kgf at 1.0 MPa.
The nominal 80 mm stroke is the maximum. The external adjuster lets you shorten the extend stroke by up to 75 mm on site, giving a usable extend range of 5-80 mm. The retract end is fixed, and this stop mechanism only sets the end position rather than locking the load.
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