Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-30
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-30 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 JSIJ50X75-30
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder brings on-site flexibility to your fixturing. The external stop screw provides a 30 mm adjustment window, letting you fine-tune the extend end position from 45 to 75 mm without swapping the actuator. Because the retract end remains fixed, only the outward stroke shortens. This hard-anodized aluminum body is notably shorter than a same-bore ISO 15552 unit, saving valuable machine space.
In practical terms, it handles a safe working load of roughly 589 N, which translates to lifting about 50 kg vertically with a 2:1 safety margin. Air connects via a G1/4 port, and adjustable air cushions of 20.5 mm decelerate the piston at each end. Note that this plain SKU lacks a magnet and cannot accept CMSE or DMSE sensors. The cushion only slows the piston near stroke end; it will not hold a load on air loss, so fit an external rod lock or pilot-operated check valve for vertical safety.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-30 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-30 |
|---|---|
| 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 JSIJ50X75-30
| 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 JSIJ50X75-30 Is Used
Clamp Stroke Trimming
Dial in the exact clamping depth on machining fixtures by turning the external stop screw, shortening the 75 mm extend stroke by up to 30 mm to avoid deforming delicate parts.
Transfer Pin Retraction
Set a precise 45 mm pin retract distance on a conveyor divert station to clear passing pallets while keeping the full 75 mm stroke in reserve for future layout changes.
Vertical Lift Stop
Lift a 50 kg tote and fine-tune the raised stop position on site, relying on a pilot-operated check valve to hold the load since the cylinder cushion only decelerates.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X75-30 the Right Cylinder?
When sizing this actuator, compare it against the neighbouring 40 mm bore, which yields 628 N of push force at 0.5 MPa, and the larger 63 mm bore, which provides 1559 N. The 50 mm bore hits a strong middle ground for medium-duty tasks. The 30 mm extend-shortening window is especially useful when you want to share one spare cylinder across several stroke variants or dial in a final end position during machine commissioning. You can mount it using basic, FA, LB, TC, TCM1, or TCM2 hardware. Since this is a non-magnetized version, position sensing is not possible. For any stroke length at or above 300 mm, always guide the load to prevent side-load damage to the rod seal.
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 JSIJ50X75-30 FAQ
At 0.5 MPa this 50 mm bore cylinder pushes with 982 N and pulls with 825 N. At 0.7 MPa the push force is 1374 N and the pull force is 1154 N. The theoretical maximum force is 200 kgf at 1.0 MPa. The air port size is G1/4.
The nominal 75 mm stroke is the maximum extend length. An external stop screw lets you shorten the extend stroke by up to 30 mm on site, giving a usable extend range of 45 to 75 mm. The retract end position is fixed and cannot be adjusted.
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