Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-40S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-40S 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 JSIJ50X75-40S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder keeps your footprint tight. Its extruded hard-anodized aluminum barrel is noticeably shorter than a same-bore ISO 15552 unit. The external adjuster lets you shorten the extend stroke on site by up to 40 mm, meaning usable extension is 35 to 75 mm while the retract end stays fixed. You can fine-tune the end position without swapping the whole cylinder. It handles about 589 N of real work, which is roughly 50 kg lifted vertically with a 2:1 margin. Air connects via two G1/4 ports.
Because this SKU carries the -S suffix, a built-in piston magnet is present. You can drop CMSE or DMSE reed and electronic switches directly into the side sensor grooves. The 20.5 mm adjustable air cushions at both ends absorb kinetic energy near stroke ends. Remember that the cushion only decelerates the piston; a plain cylinder cannot hold a load on air loss. For a suspended weight you must add an external rod lock or a pilot-operated check valve.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-40S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-40S |
|---|---|
| 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 JSIJ50X75-40S
| 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 JSIJ50X75-40S Is Used
Press Fit Tuning
Dial in the exact 35 to 75 mm extend reach for seating light bearings without re-mounting the actuator.
Transfer Diverter
Adjust the extend stop on-site to deflect different package sizes on a moving belt line.
Pallet Stop Gate
Fine-tune the gate extension distance to handle varying pallet widths entering a wrapper.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-40S the Right Cylinder?
When sizing this 50 mm bore, step down to a 40 mm bore for lighter duties (628 N push at 0.5 MPa) or step up to a 63 mm bore for heavier loads (1559 N push at 0.5 MPa). The 40 mm adjustable window is ideal when you need to share one spare cylinder across several stroke variants or fine-tune the end position on the machine. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2. The -S magnet supports CMSE and DMSE sensors. For any stroke length at or above 300 mm, always use a guide rail to prevent side-load damage to the rod seals.
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 JSIJ50X75-40S 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. The rod is 20 mm with an M18x1.5 thread, and ports are G1/4.
The nominal 75 mm extend stroke is the maximum. The external adjuster lets you shorten that extend stroke on site by up to 40 mm, giving a usable extend range of 35 to 75 mm. The retract end is fixed, and the adjuster sets the end position rather than locking the load.
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