Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-50S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-50S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM18×1.5
- CushionAdjustable, 20.5 mm
About the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-50S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder is built for tight machinery where an external adjuster is essential. The hard-anodized aluminium barrel keeps the unit more compact than a same-bore ISO 15552 cylinder, while the G1/4 port feeds the double-acting single rod.
The -50 code means you can shorten the extend stroke on site by up to 50 mm, dropping the usable forward travel from the 75 mm maximum down to 25 mm without swapping the actuator. Because the -S suffix adds a piston magnet, CMSE or DMSE switches drop straight into the side grooves for position sensing. In practical terms it handles about 589 N of real work, which is roughly 50 kg lifted vertically with a 2:1 safety margin.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-50S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-50S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 75 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 JSIJ50X75-50S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×75 | 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 JSIJ50X75-50S Is Used
Press Stroke Tuning
Dial in the exact 25 to 75 mm extend reach on a small stamping or clamping station without machining a new stop.
Transfer Gate Adjust
Shift a diverter arm's end position by up to 50 mm on site to accommodate different package widths on the line.
Vertical Lift Stop
Lift roughly 50 kg of stock and set the precise raise height mechanically via the external stop screw.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-50S the Right Cylinder?
When sizing this 50 mm bore, the neighbouring 40 mm offers 628 N push at 0.5 MPa for lighter duties, while stepping up to the 63 mm yields 1559 N for heavier cycles. The adjustable window shines when you need to fine-tune an end position on the floor or standardise one spare across several stroke variants. Mounting choices span Basic, FA, LB, TC, TCM1 and TCM2. The -S magnet supports CMSE/DMSE sensors, and for any stroke reaching 300 mm or more you should guide the load to prevent rod side-load 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 JSIJ50X75-50S FAQ
At 0.5 MPa it pushes 982 N and pulls 825 N. At 0.7 MPa the push is 1374 N and the pull is 1154 N. The theoretical maximum force is 200 kgf at 1.0 MPa. The cylinder uses a G1/4 port.
The 75 mm nominal stroke is the maximum forward travel. The external adjuster lets you shorten the extend stroke on site by up to 50 mm, giving a usable range of 25 to 75 mm. The retract end is fixed. This stop sets the end position but does not hold the load on air loss; for that use an external rod lock or pilot-operated check valve.
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